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   "crs": "EPSG:25833",
   "elevation_provider_key": "nhm-no",
   "tile_index": "nhm-window",
   "authority": "nvdb",
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  "elevation_crs": "EPSG:25833",
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  "calculated_at": "2026-10-04T03:53:22+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/no-b04-block-batch-no-b04.osm.pbf",
  "osm_snapshot": "",
  "run_id": "no-b04",
  "elevation_provider": "Kartverket NHM DTM 1 m (laser-covered ground only)",
  "elevation_licence": "CC BY 4.0 \u2014 \u00a9 Kartverket (https://www.kartverket.no/api-og-data/vilkar-for-bruk)",
  "elevation_dataset": "Nasjonal h\u00f8ydemodell (NHM) DTM, 1 m, EPSG:25833, NN2000 (Kartverket), served by the hoydedata.no ImageServer; ground without a laser project is a coarser resampled product and is never measured",
  "elevation_vertical_datum": "NN2000",
  "elevation_tile_ids": [
   "E188500-N6576000"
  ],
  "elevation_blocks": [
   "nhm-dtm-1m"
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    "name": "NDH Skien-Porsgrunn 5pkt 2016",
    "points_per_m2": 5,
    "resolution_m": 0.25,
    "season": "",
    "year": 2016
   },
   {
    "last_flight_date": "2016-10-04",
    "name": "NVE Skiens og Porsgrunnselva 2016",
    "points_per_m2": 5,
    "resolution_m": 0.25,
    "season": "",
    "year": 2016
   },
   {
    "last_flight_date": "2008-01-01",
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    "season": "season-unknown",
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   {
    "last_flight_date": "2021-08-30",
    "name": "Vestfold og Telemark 5pkt 2021",
    "points_per_m2": 5,
    "resolution_m": 0.25,
    "season": "",
    "year": 2021
   }
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  "nhm_last_flight_date": "2021-08-30",
  "nhm_flight_season_unknown": [
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  ],
  "nhm_retrieved_at": "2026-10-03T19:04:36Z",
  "nhm_note": "laser projects overlapping the route's cells; the mosaic draws on them by its own priority and which project supplied which pixel is not recorded",
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "tunnel_check": "osm tunnel=* ways on 1 own way(s)",
  "tunnel_ranges_m": [],
  "underground_fraction": 0.0,
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   "stations_resolved": 19,
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   "window_m": [
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   "width_at_max25_m": 5.38,
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   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
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   "hedge_to_hedge": {
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    "stations_resolved": 19,
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   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Skien",
  "county": "Telemark",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}