{
  "id": "gateway_v0217",
  "name": "Gateway",
  "img": 1024,
  "cal_s": 8.0,
  "cal": {
    "ax": 0.007014388489208633,
    "bx": 0.0,
    "cx": 3738.26618705036,
    "ay": 0.0,
    "by": 0.007004480286738351,
    "cy": 4438.719534050179
  },
  "tile_native": 16384,
  "tile_maxz": 6,
  "tile_max_native_z": 5,
  "l_scale": 0.25,
  "edition": "Gateway_v0.21.7",
  "canvas": {
    "size": 8192,
    "picture": [
      7800,
      7817
    ],
    "placed_at": [
      196,
      187
    ]
  },
  "sea_rgb": [
    11,
    38,
    81
  ],
  "sea_rgb_note": "The edition's own deep-ocean colour, sampled off the picture's outer ring by build_tiles.py (the same paint the canvas pad is filled with). map.js paints the map's ground with it, so the ground beyond the pyramid - a phone's letterbox, a tile still loading - is the same sea the picture shows, never the site's wall bleeding through a translucent container.",
  "world_extent": {
    "long_min_cm": -505000.0,
    "long_span_cm": 1112000.0,
    "lat_min_cm": -607000.0,
    "lat_span_cm": 1116000.0
  }
}