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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.",
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   "data/cache/scotland/phase-5/dtm/NS68SW.tif"
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  "calculated_at": "2026-08-19T17:27:47+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/scotland-2026-08-14.osm.pbf",
  "osm_snapshot": "2026-08-13T20:21:01Z",
  "elevation_provider": "Scottish Remote Sensing Portal (AWS Open Data, srsp-open-data)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Scottish Government, SEPA and partners; Crown copyright",
  "elevation_dataset": "Scottish Public Sector LiDAR Phase 5 50cm",
  "elevation_tile_ids": [
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   "NS68SW"
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  "climb_origin": "discovered",
  "notes": "Coarse pass: max 9.5% over 200 m (Terrain 50), gain 188.6 m over 3135 m way. EXTENDED by graph walk: +1 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. ADOPTED (Scotland launch 2026-08-18): big-gain. ENDPOINT-EXTENDED 2026-08-19 (audit_endpoints flag; re-walk under private-way-safe rules; confirmed via comparison batch).",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Lennoxtown",
  "county": "East Dunbartonshire"
 }
}