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  "elevation_provider": "IGN LiDAR HD MNT 0.5 m",
  "elevation_licence": "Licence Ouverte / Open Licence 2.0 (Etalab) \u2014 \u00a9 IGN, LiDAR HD (MNT/MNS), data.geopf.fr; reproduction autoris\u00e9e avec mention de la source et de la date",
  "elevation_dataset": "LiDAR HD \u2014 MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information g\u00e9ographique et foresti\u00e8re), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69",
  "elevation_vertical_datum": "IGN69",
  "elevation_tile_ids": [
   "E805-N6407",
   "E805-N6408",
   "E805-N6409",
   "E805-N6410",
   "E805-N6411",
   "E805-N6412",
   "E806-N6408",
   "E806-N6409",
   "E806-N6410",
   "E806-N6411",
   "E806-N6412",
   "E806-N6413"
  ],
  "elevation_blocks": [
   "22LHD5NN@2025-06-04"
  ],
  "ign_dalles": [
   "LHD_FXX_0805_6408_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0805_6409_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0805_6410_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0805_6411_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0805_6412_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0805_6413_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0806_6409_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0806_6410_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0806_6411_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0806_6412_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0806_6413_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0806_6414_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD5NN"
  ],
  "ign_editions": [
   "2025-06-04"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0805_6408_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0805_6409_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0805_6410_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0805_6411_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0805_6412_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0805_6413_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0806_6409_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0806_6410_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0806_6411_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0806_6412_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0806_6413_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0806_6414_MNT_O_0M50_LAMB93_IGN69": "2025-06-04"
  },
  "climb_origin": "named-pass",
  "structure_own_ways": 14,
  "structure_mask_ranges_m": [
   [
    3368.5,
    3390.6
   ],
   [
    7290.2,
    7311.8
   ],
   [
    5887.2,
    5925.2
   ],
   [
    0.0,
    15.0
   ]
  ],
  "mask_basin_extension_m": 11.0,
  "suppression_unstable": [
   5.0
  ],
  "carriageway": {
   "stations": 319,
   "stations_resolved": 319,
   "width_median_m": 6.5,
   "width_p10_m": 3.7,
   "width_min_m": 0.5,
   "width_max_m": 12.0,
   "bounded_share": 0.232,
   "unbounded_share": 0.768,
   "confidence_median": 0.0,
   "width_median_bounded_m": 6.38,
   "window_m": [
    5153.0,
    5178.0
   ],
   "width_at_max25_m": 6.5,
   "window_stations": 7,
   "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",
   "station_m": 25.0,
   "window_station_m": 5.0,
   "halfwidth_m": 6.0,
   "step_m": 0.25,
   "level_tol_m": 0.12,
   "break_min_m": 0.3,
   "stations_failed": 0,
   "hedge_to_hedge": {
    "stations": 319,
    "stations_resolved": 319,
    "width_median_m": 7.75,
    "width_p10_m": 1.7,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.605,
    "unbounded_share": 0.395,
    "confidence_median": 1.0,
    "width_median_bounded_m": 6.5,
    "window_m": [
     5153.0,
     5178.0
    ],
    "width_at_max25_m": 1.5,
    "window_stations": 7,
    "status": "ok",
    "source": "dsm",
    "station_m": 25.0,
    "window_station_m": 5.0,
    "halfwidth_m": 6.0,
    "step_m": 0.25,
    "level_tol_m": 0.5,
    "break_min_m": 0.3,
    "stations_failed": 0
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Laviolle",
  "county": "Ard\u00e8che",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}