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 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
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  "extent": [
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  "calculated_at": "2026-09-03T15:42:42+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/discovered-lane-46-9621-68-5670/discovered-lane-46-9621-68-5670.geojson",
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  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, ME_CrownofMaine_2018_A18 (collected 2018)",
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  "canopy_check": "unavailable \u2014 EPT corridor failed: ME_AroostookCo_2012: no corridor points fetched",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Winterville",
  "county": "Maine"
 }
}