{
 "read": "2026-08-27",
 "source": {
  "name": "Terrain Tiles (Mapzen) on AWS Open Data — SRTM (NASA/USGS)",
  "url": "https://registry.opendata.aws/terrain-tiles/"
 },
 "encoding": "terrarium",
 "zooms": "0–12",
 "fence": [
  97.3,
  17.0,
  100.6,
  20.5
 ],
 "highest_cell": {
  "ele": 2577,
  "lat": 18.58784,
  "lng": 98.48711
 },
 "tha_phae": {
  "lat": 18.7876,
  "lng": 98.9931,
  "ele": 313
 },
 "above_1000_share": 0.1823,
 "above_1000_note": "share of THIS RECTANGULAR FRAME above 1,000 m, cos(lat)-weighted at z10 — the frame holds slivers of neighbouring provinces; this is not a statement about the two provinces' borders",
 "method": {
  "highest_cell": "candidates above 2400 m, highest first; a cell more than 300 m above all eight neighbours is a void-fill artifact and is skipped (3 skipped this read)",
  "profile": "median of three along the line"
 }
}