{
  "product": "OS Terrain 50",
  "version": "2026-07",
  "attribution": "Contains OS data \u00a9 Crown copyright and database right 2026",
  "licence": "Open Government Licence v3.0",
  "width": 2009,
  "height": 2018,
  "crs": "EPSG:4326",
  "pixel_size_crs_units": [
    0.00075,
    0.00045
  ],
  "approx_cell_size_m": [
    50.2,
    49.8
  ],
  "bounds_crs": {
    "west": -2.001468783395438,
    "south": 52.58860172868947,
    "east": -0.49471878339543784,
    "north": 53.496701728689466
  },
  "elevation_min_m": -133.94,
  "elevation_max_m": 636.02,
  "nodata": {
    "geotiff": -9999.0,
    "meaning": "sea (OS fill -0.9), missing tiles, outside GB incl. Northern Ireland"
  },
  "png16": "row 0 = north; 0 = nodata/sea; 1..65535 linear to elevation_min_m..elevation_max_m",
  "raw": {
    "file": "sk_50m.r16",
    "dtype": "uint16",
    "byte_order": "little-endian",
    "row_order": "north to south",
    "encoding": "0 = nodata/sea; h_m = min_m + (v-1)/65534*(max_m-min_m)"
  },
  "osgb_bounds": {
    "west": 400000.0,
    "south": 300000.0,
    "east": 500000.0,
    "north": 400000.0
  },
  "osgb_cell_m": 50,
  "tiles": 100,
  "osgb_tif": "sk_50m_27700.tif",
  "method": "native 50 m mosaic in BNG (also saved), bilinear warp to EPSG:4326",
  "bounds_wgs84": {
    "west": -2.001468783395438,
    "south": 52.58860172868947,
    "east": -0.49471878339543784,
    "north": 53.496701728689466
  }
}