{
 "ocl_version": "0.1.0",
 "name": "Col du Pin-Bouchain from Saint-Symphorien-de-Lay",
 "slug": "col-du-pin-bouchain-from-saint-symphorien-de-lay",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 8.266910492756097,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 9067.0,
   "end_distance_m": 9069.0,
   "start_elevation_m": 683.1542358789579,
   "end_elevation_m": 683.319574088813,
   "min_gradient_pct": -7.591384312081573,
   "suppressed_max_gradient_pct": 500.2940192320125,
   "suppressed_location_m": [
    8312.0,
    8314.0
   ],
   "suppressed_min_gradient_pct": -514.4299464461028,
   "suppressed_min_location_m": [
    8303.0,
    8305.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 7.82126382464033,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 9067.0,
   "end_distance_m": 9070.0,
   "start_elevation_m": 683.1542358789579,
   "end_elevation_m": 683.3888737936971,
   "min_gradient_pct": -7.025876394440426,
   "suppressed_max_gradient_pct": 391.1386882228574,
   "suppressed_location_m": [
    8311.0,
    8314.0
   ],
   "suppressed_min_gradient_pct": -372.0364320732415,
   "suppressed_min_location_m": [
    8303.0,
    8306.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 7.100174639692796,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 2542.0,
   "end_distance_m": 2547.0,
   "start_elevation_m": 522.6479680337142,
   "end_elevation_m": 523.0029767656988,
   "min_gradient_pct": -6.573364998591842,
   "suppressed_max_gradient_pct": 237.60641316891451,
   "suppressed_location_m": [
    8311.0,
    8316.0
   ],
   "suppressed_min_gradient_pct": -225.54922396989014,
   "suppressed_min_location_m": [
    8301.0,
    8306.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 6.817109161569306,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 2565.0,
   "end_distance_m": 2575.0,
   "start_elevation_m": 524.143657527365,
   "end_elevation_m": 524.8253684435219,
   "min_gradient_pct": -6.4963882249833205,
   "suppressed_max_gradient_pct": 122.04875336698478,
   "suppressed_location_m": [
    8306.0,
    8316.0
   ],
   "suppressed_min_gradient_pct": -109.52906520241754,
   "suppressed_min_location_m": [
    8301.0,
    8311.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 6.70253317647564,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 2555.0,
   "end_distance_m": 2575.0,
   "start_elevation_m": 523.4848618082268,
   "end_elevation_m": 524.8253684435219,
   "min_gradient_pct": -6.351271575614419,
   "suppressed_max_gradient_pct": 64.02512003696756,
   "suppressed_location_m": [
    8306.0,
    8326.0
   ],
   "suppressed_min_gradient_pct": -51.4259250025367,
   "suppressed_min_location_m": [
    8290.0,
    8310.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 6.685052612801428,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 2550.0,
   "end_distance_m": 2575.0,
   "start_elevation_m": 523.1541052903216,
   "end_elevation_m": 524.8253684435219,
   "min_gradient_pct": -6.318968635116107,
   "suppressed_max_gradient_pct": 52.36516705589747,
   "suppressed_location_m": [
    8307.0,
    8332.0
   ],
   "suppressed_min_gradient_pct": -39.87460625500398,
   "suppressed_min_location_m": [
    8283.0,
    8308.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 6.525200970256037,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 2525.0,
   "end_distance_m": 2575.0,
   "start_elevation_m": 521.5627679583939,
   "end_elevation_m": 524.8253684435219,
   "min_gradient_pct": -6.228488896742874,
   "suppressed_max_gradient_pct": 29.247588026854828,
   "suppressed_location_m": [
    8306.0,
    8356.0
   ],
   "suppressed_min_gradient_pct": -16.908809842212577,
   "suppressed_min_location_m": [
    8256.0,
    8306.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 6.401548272339824,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2505.0,
   "end_distance_m": 2605.0,
   "start_elevation_m": 520.3146209263049,
   "end_elevation_m": 526.7161691986447,
   "min_gradient_pct": -6.134185805229777,
   "suppressed_max_gradient_pct": 17.61663179370305,
   "suppressed_location_m": [
    8306.0,
    8406.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.393,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 19.0,
  "shape_class": "sustained"
 },
 "length_m": 11688.656553508745,
 "start_elevation_m": 443.98650677490224,
 "end_elevation_m": 761.4547095468791,
 "endpoint_gain_m": 317.4682027719769,
 "overall_gradient_pct": 2.716036708912267,
 "accumulated_ascent_m": 370.3111773223108,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 7.100174639692796,
   "start_distance_m": 2542.0,
   "end_distance_m": 2547.0,
   "midpoint_distance_m": 2544.5,
   "start_elevation_m": 522.6479680337142,
   "end_elevation_m": 523.0029767656988,
   "start_xy": [
    796664.7643876161,
    6538963.933806773
   ],
   "end_xy": [
    796668.8460480248,
    6538961.045892594
   ]
  },
  "max_10m": {
   "gradient_pct": 6.817109161569306,
   "start_distance_m": 2565.0,
   "end_distance_m": 2575.0,
   "midpoint_distance_m": 2570.0,
   "start_elevation_m": 524.143657527365,
   "end_elevation_m": 524.8253684435219,
   "start_xy": [
    796683.5400254962,
    6538950.649401548
   ],
   "end_xy": [
    796691.7033463137,
    6538944.87357319
   ]
  },
  "max_20m": {
   "gradient_pct": 6.70253317647564,
   "start_distance_m": 2555.0,
   "end_distance_m": 2575.0,
   "midpoint_distance_m": 2565.0,
   "start_elevation_m": 523.4848618082268,
   "end_elevation_m": 524.8253684435219,
   "start_xy": [
    796675.3767046788,
    6538956.425229907
   ],
   "end_xy": [
    796691.7033463137,
    6538944.87357319
   ]
  },
  "max_25m": {
   "gradient_pct": 6.685052612801428,
   "start_distance_m": 2550.0,
   "end_distance_m": 2575.0,
   "midpoint_distance_m": 2562.5,
   "start_elevation_m": 523.1541052903216,
   "end_elevation_m": 524.8253684435219,
   "start_xy": [
    796671.29504427,
    6538959.313144087
   ],
   "end_xy": [
    796691.7033463137,
    6538944.87357319
   ]
  },
  "max_50m": {
   "gradient_pct": 6.525200970256037,
   "start_distance_m": 2525.0,
   "end_distance_m": 2575.0,
   "midpoint_distance_m": 2550.0,
   "start_elevation_m": 521.5627679583939,
   "end_elevation_m": 524.8253684435219,
   "start_xy": [
    796650.8867422264,
    6538973.752714984
   ],
   "end_xy": [
    796691.7033463137,
    6538944.87357319
   ]
  },
  "max_100m": {
   "gradient_pct": 6.401548272339824,
   "start_distance_m": 2505.0,
   "end_distance_m": 2605.0,
   "midpoint_distance_m": 2555.0,
   "start_elevation_m": 520.3146209263049,
   "end_elevation_m": 526.7161691986447,
   "start_xy": [
    796634.5601005915,
    6538985.304371702
   ],
   "end_xy": [
    796716.193308766,
    6538927.5460881125
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.573364998591842,
   "start_distance_m": 3205.0,
   "end_distance_m": 3210.0,
   "midpoint_distance_m": 3207.5,
   "start_elevation_m": 524.041385627652,
   "end_elevation_m": 523.7127173777224,
   "start_xy": [
    797268.6914653735,
    6538767.0638499055
   ],
   "end_xy": [
    797273.6092543096,
    6538767.966818333
   ]
  },
  "min_10m": {
   "gradient_pct": -6.4963882249833205,
   "start_distance_m": 3172.0,
   "end_distance_m": 3182.0,
   "midpoint_distance_m": 3177.0,
   "start_elevation_m": 526.0930128212406,
   "end_elevation_m": 525.4433739987422,
   "start_xy": [
    797236.2262757433,
    6538761.147688077
   ],
   "end_xy": [
    797246.0696362677,
    6538762.91019514
   ]
  },
  "min_20m": {
   "gradient_pct": -6.351271575614419,
   "start_distance_m": 3172.0,
   "end_distance_m": 3192.0,
   "midpoint_distance_m": 3182.0,
   "start_elevation_m": 526.0930128212406,
   "end_elevation_m": 524.8227585061177,
   "start_xy": [
    797236.2262757433,
    6538761.147688077
   ],
   "end_xy": [
    797255.9052141398,
    6538764.7161319945
   ]
  },
  "min_25m": {
   "gradient_pct": -6.318968635116107,
   "start_distance_m": 3172.0,
   "end_distance_m": 3197.0,
   "midpoint_distance_m": 3184.5,
   "start_elevation_m": 526.0930128212406,
   "end_elevation_m": 524.5132706624615,
   "start_xy": [
    797236.2262757433,
    6538761.147688077
   ],
   "end_xy": [
    797260.8230030758,
    6538765.619100422
   ]
  },
  "min_50m": {
   "gradient_pct": -6.228488896742874,
   "start_distance_m": 3162.0,
   "end_distance_m": 3212.0,
   "midpoint_distance_m": 3187.0,
   "start_elevation_m": 526.708215954761,
   "end_elevation_m": 523.5939715063896,
   "start_xy": [
    797226.375629414,
    6538759.42583823
   ],
   "end_xy": [
    797275.576369884,
    6538768.328005704
   ]
  },
  "min_100m": {
   "gradient_pct": -6.134185805229777,
   "start_distance_m": 3172.0,
   "end_distance_m": 3272.0,
   "midpoint_distance_m": 3222.0,
   "start_elevation_m": 526.0930128212406,
   "end_elevation_m": 519.9588270160108,
   "start_xy": [
    797236.2262757433,
    6538761.147688077
   ],
   "end_xy": [
    797334.5898371163,
    6538779.163626831
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 8.266910492756097,
   "start_distance_m": 9067.0,
   "end_distance_m": 9069.0,
   "midpoint_distance_m": 9068.0,
   "start_elevation_m": 683.1542358789579,
   "end_elevation_m": 683.319574088813,
   "start_xy": [
    801817.6715675995,
    6536694.44708196
   ],
   "end_xy": [
    801819.4328318053,
    6536693.499480569
   ]
  },
  "max_3m": {
   "gradient_pct": 7.82126382464033,
   "start_distance_m": 9067.0,
   "end_distance_m": 9070.0,
   "midpoint_distance_m": 9068.5,
   "start_elevation_m": 683.1542358789579,
   "end_elevation_m": 683.3888737936971,
   "start_xy": [
    801817.6715675995,
    6536694.44708196
   ],
   "end_xy": [
    801820.3134639083,
    6536693.025679872
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.007,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.009,
   "obstruction_max_height_m": 18.32,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    8290.0,
    8330.0
   ],
   [
    8933.0,
    8973.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "076a8e7f889cfb3c2cf6b3de65a6030c7155b1f0",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "fr-mc7",
   "road_pbf": "block-batch-fr-mc7.osm.pbf",
   "region_key": "france",
   "crs": "EPSG:2154",
   "elevation_provider_key": "ign-lidarhd",
   "tile_index": "wms-grid",
   "authority": "bdtopo",
   "registry_pbf": "france-vosges-2026-09-16.osm.pbf",
   "tile_index_snapshot": "sha256:af4eae1f5df9e232"
  },
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:2154",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/fr/ign-lidarhd_dtm_E794-N6538_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E794-N6539_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E795-N6538_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E795-N6539_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E796-N6538_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E796-N6539_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E797-N6538_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E797-N6539_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E798-N6538_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E798-N6539_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E799-N6538_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E799-N6539_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E800-N6537_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E800-N6538_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E800-N6539_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E801-N6536_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E801-N6537_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E801-N6538_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E802-N6536_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E803-N6535_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E803-N6536_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E804-N6535_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E804-N6536_0m5@21LHD5NK-2025-02-20.tif"
  ],
  "calculated_at": "2026-09-22T12:16:30+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc7.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc7",
  "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": [
   "E794-N6538",
   "E794-N6539",
   "E795-N6538",
   "E795-N6539",
   "E796-N6538",
   "E796-N6539",
   "E797-N6538",
   "E797-N6539",
   "E798-N6538",
   "E798-N6539",
   "E799-N6538",
   "E799-N6539",
   "E800-N6537",
   "E800-N6538",
   "E800-N6539",
   "E801-N6536",
   "E801-N6537",
   "E801-N6538",
   "E802-N6536",
   "E803-N6535",
   "E803-N6536",
   "E804-N6535",
   "E804-N6536"
  ],
  "elevation_blocks": [
   "21LHD5NK@2025-02-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0794_6539_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0794_6540_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0795_6539_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0795_6540_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0796_6539_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0796_6540_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0797_6539_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0797_6540_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0798_6539_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0798_6540_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0799_6539_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0799_6540_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0800_6538_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0800_6539_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0800_6540_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0801_6537_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0801_6538_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0801_6539_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0802_6537_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0803_6536_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0803_6537_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0804_6536_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0804_6537_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD5NK"
  ],
  "ign_editions": [
   "2025-02-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0794_6539_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0794_6540_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0795_6539_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0795_6540_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0796_6539_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0796_6540_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0797_6539_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0797_6540_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0798_6539_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0798_6540_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0799_6539_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0799_6540_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0800_6538_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0800_6539_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0800_6540_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0801_6537_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0801_6538_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0801_6539_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0802_6537_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0803_6536_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0803_6537_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0804_6536_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0804_6537_MNT_O_0M50_LAMB93_IGN69": "2025-02-20"
  },
  "climb_origin": "named-pass",
  "structure_own_ways": 35,
  "structure_mask_ranges_m": [
   [
    8295.0,
    8325.0
   ],
   [
    8938.5,
    8968.5
   ]
  ],
  "carriageway": {
   "stations": 472,
   "stations_resolved": 472,
   "width_median_m": 11.0,
   "width_p10_m": 9.0,
   "width_min_m": 6.5,
   "width_max_m": 12.0,
   "bounded_share": 0.0,
   "unbounded_share": 1.0,
   "confidence_median": 0.0,
   "window_m": [
    2550.0,
    2575.0
   ],
   "width_at_max25_m": 9.38,
   "window_stations": 6,
   "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": 472,
    "stations_resolved": 472,
    "width_median_m": 12.0,
    "width_p10_m": 11.25,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.006,
    "unbounded_share": 0.994,
    "confidence_median": 0.0,
    "width_median_bounded_m": 0.5,
    "window_m": [
     2550.0,
     2575.0
    ],
    "width_at_max25_m": 12.0,
    "window_stations": 6,
    "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": "Saint-Symphorien-de-Lay",
  "county": "Loire",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}