{
 "ocl_version": "0.1.0",
 "name": "Col du Tr\u00e9batut from Bourgs sur Colagne",
 "slug": "col-du-trebatut-from-bourgs-sur-colagne",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 41.914092266466696,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 3610.0,
   "end_distance_m": 3612.0,
   "start_elevation_m": 862.2237643639974,
   "end_elevation_m": 863.0620462093267,
   "min_gradient_pct": -33.243339242403636,
   "suppressed_max_gradient_pct": 91.9691997154132,
   "suppressed_location_m": [
    8351.0,
    8353.0
   ],
   "suppressed_min_gradient_pct": -86.75078282708455,
   "suppressed_min_location_m": [
    8344.0,
    8346.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.879638723657234,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 3610.0,
   "end_distance_m": 3613.0,
   "start_elevation_m": 862.2237643639974,
   "end_elevation_m": 863.0301535257071,
   "min_gradient_pct": -25.721082305191583,
   "suppressed_max_gradient_pct": 89.40530055557853,
   "suppressed_location_m": [
    8350.0,
    8353.0
   ],
   "suppressed_min_gradient_pct": -85.86253414433334,
   "suppressed_min_location_m": [
    8344.0,
    8347.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.826155904682764,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "suppression_unstable"
   ],
   "start_distance_m": 3610.0,
   "end_distance_m": 3615.0,
   "start_elevation_m": 862.2237643639974,
   "end_elevation_m": 863.6650721592315,
   "min_gradient_pct": -17.706889460248476,
   "suppressed_max_gradient_pct": 77.72221499482839,
   "suppressed_location_m": [
    8349.0,
    8354.0
   ],
   "suppressed_min_gradient_pct": -68.88213066848493,
   "suppressed_min_location_m": [
    8343.0,
    8348.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.29369353286711,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 3607.0,
   "end_distance_m": 3617.0,
   "start_elevation_m": 861.8757980515973,
   "end_elevation_m": 863.905167404884,
   "min_gradient_pct": -9.027441450307379,
   "suppressed_max_gradient_pct": 42.2948132296915,
   "suppressed_location_m": [
    8349.0,
    8359.0
   ],
   "suppressed_min_gradient_pct": -33.56259109637449,
   "suppressed_min_location_m": [
    8339.0,
    8349.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 12.282778632571763,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 3607.0,
   "end_distance_m": 3627.0,
   "start_elevation_m": 861.8757980515973,
   "end_elevation_m": 864.3323537781116,
   "min_gradient_pct": -4.7042140637682905,
   "suppressed_max_gradient_pct": 23.28394072600304,
   "suppressed_location_m": [
    8349.0,
    8369.0
   ],
   "suppressed_min_gradient_pct": -16.34985261708266,
   "suppressed_min_location_m": [
    8329.0,
    8349.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 10.583547761661066,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 3607.0,
   "end_distance_m": 3632.0,
   "start_elevation_m": 861.8757980515973,
   "end_elevation_m": 864.5216849920125,
   "min_gradient_pct": -4.613958277398524,
   "suppressed_max_gradient_pct": 19.384106818541113,
   "suppressed_location_m": [
    8349.0,
    8374.0
   ],
   "suppressed_min_gradient_pct": -12.431370519197117,
   "suppressed_min_location_m": [
    8324.0,
    8349.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 9.881358860542377,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2024.0,
   "end_distance_m": 2074.0,
   "start_elevation_m": 741.4703682471195,
   "end_elevation_m": 746.4110476773907,
   "min_gradient_pct": -4.214286848347456,
   "suppressed_max_gradient_pct": 12.41089536618756,
   "suppressed_location_m": [
    8349.0,
    8399.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 9.307771537220333,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1971.0,
   "end_distance_m": 2071.0,
   "start_elevation_m": 736.8361369786116,
   "end_elevation_m": 746.143908515832,
   "min_gradient_pct": -3.7080601028113733,
   "suppressed_max_gradient_pct": 9.674221816836166,
   "suppressed_location_m": [
    8072.0,
    8172.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.365,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 28.0,
  "shape_class": "sustained"
 },
 "length_m": 9148.84328514666,
 "start_elevation_m": 617.1764685888586,
 "end_elevation_m": 1077.4883174414217,
 "endpoint_gain_m": 460.3118488525631,
 "overall_gradient_pct": 5.031366638445858,
 "accumulated_ascent_m": 482.11522018315213,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.826155904682764,
   "start_distance_m": 3610.0,
   "end_distance_m": 3615.0,
   "midpoint_distance_m": 3612.5,
   "start_elevation_m": 862.2237643639974,
   "end_elevation_m": 863.6650721592315,
   "start_xy": [
    717100.9036918111,
    6379429.845449207
   ],
   "end_xy": [
    717096.1555175969,
    6379431.4122426305
   ]
  },
  "max_10m": {
   "gradient_pct": 20.29369353286711,
   "start_distance_m": 3607.0,
   "end_distance_m": 3617.0,
   "midpoint_distance_m": 3612.0,
   "start_elevation_m": 861.8757980515973,
   "end_elevation_m": 863.905167404884,
   "start_xy": [
    717103.7525963397,
    6379428.905373153
   ],
   "end_xy": [
    717094.2562479111,
    6379432.03896
   ]
  },
  "max_20m": {
   "gradient_pct": 12.282778632571763,
   "start_distance_m": 3607.0,
   "end_distance_m": 3627.0,
   "midpoint_distance_m": 3617.0,
   "start_elevation_m": 861.8757980515973,
   "end_elevation_m": 864.3323537781116,
   "start_xy": [
    717103.7525963397,
    6379428.905373153
   ],
   "end_xy": [
    717084.6140156077,
    6379434.478787075
   ]
  },
  "max_25m": {
   "gradient_pct": 10.583547761661066,
   "start_distance_m": 3607.0,
   "end_distance_m": 3632.0,
   "midpoint_distance_m": 3619.5,
   "start_elevation_m": 861.8757980515973,
   "end_elevation_m": 864.5216849920125,
   "start_xy": [
    717103.7525963397,
    6379428.905373153
   ],
   "end_xy": [
    717079.6369388672,
    6379434.957020406
   ]
  },
  "max_50m": {
   "gradient_pct": 9.881358860542377,
   "start_distance_m": 2024.0,
   "end_distance_m": 2074.0,
   "midpoint_distance_m": 2049.0,
   "start_elevation_m": 741.4703682471195,
   "end_elevation_m": 746.4110476773907,
   "start_xy": [
    718159.6741041982,
    6379256.001890994
   ],
   "end_xy": [
    718114.1012285181,
    6379236.615491232
   ]
  },
  "max_100m": {
   "gradient_pct": 9.307771537220333,
   "start_distance_m": 1971.0,
   "end_distance_m": 2071.0,
   "midpoint_distance_m": 2021.0,
   "start_elevation_m": 736.8361369786116,
   "end_elevation_m": 746.143908515832,
   "start_xy": [
    718208.5907209533,
    6379246.712143107
   ],
   "end_xy": [
    718117.0553274748,
    6379237.138271638
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -17.706889460248476,
   "start_distance_m": 3602.0,
   "end_distance_m": 3607.0,
   "midpoint_distance_m": 3604.5,
   "start_elevation_m": 862.7611425246097,
   "end_elevation_m": 861.8757980515973,
   "start_xy": [
    717108.500770554,
    6379427.33857973
   ],
   "end_xy": [
    717103.7525963397,
    6379428.905373153
   ]
  },
  "min_10m": {
   "gradient_pct": -9.027441450307379,
   "start_distance_m": 7038.0,
   "end_distance_m": 7048.0,
   "midpoint_distance_m": 7043.0,
   "start_elevation_m": 989.0327041856717,
   "end_elevation_m": 988.129960040641,
   "start_xy": [
    714901.4208584765,
    6380328.908322164
   ],
   "end_xy": [
    714894.1019412769,
    6380335.722531658
   ]
  },
  "min_20m": {
   "gradient_pct": -4.7042140637682905,
   "start_distance_m": 7430.0,
   "end_distance_m": 7450.0,
   "midpoint_distance_m": 7440.0,
   "start_elevation_m": 992.3359796856918,
   "end_elevation_m": 991.3951368729381,
   "start_xy": [
    714589.8435387583,
    6380559.431541299
   ],
   "end_xy": [
    714578.4454802079,
    6380575.851272419
   ]
  },
  "min_25m": {
   "gradient_pct": -4.613958277398524,
   "start_distance_m": 7424.0,
   "end_distance_m": 7449.0,
   "midpoint_distance_m": 7436.5,
   "start_elevation_m": 992.5910449331598,
   "end_elevation_m": 991.4375553638101,
   "start_xy": [
    714593.4222581952,
    6380554.615654342
   ],
   "end_xy": [
    714578.9849952165,
    6380575.009296436
   ]
  },
  "min_50m": {
   "gradient_pct": -4.214286848347456,
   "start_distance_m": 7420.0,
   "end_distance_m": 7470.0,
   "midpoint_distance_m": 7445.0,
   "start_elevation_m": 992.7813989601831,
   "end_elevation_m": 990.6742555360094,
   "start_xy": [
    714595.8080711531,
    6380551.405063036
   ],
   "end_xy": [
    714567.6551800361,
    6380592.6907920735
   ]
  },
  "min_100m": {
   "gradient_pct": -3.7080601028113733,
   "start_distance_m": 7410.0,
   "end_distance_m": 7510.0,
   "midpoint_distance_m": 7460.0,
   "start_elevation_m": 993.1403279416983,
   "end_elevation_m": 989.4322678388869,
   "start_xy": [
    714601.7726035478,
    6380543.378584773
   ],
   "end_xy": [
    714545.810533566,
    6380626.048434466
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 41.914092266466696,
   "start_distance_m": 3610.0,
   "end_distance_m": 3612.0,
   "midpoint_distance_m": 3611.0,
   "start_elevation_m": 862.2237643639974,
   "end_elevation_m": 863.0620462093267,
   "start_xy": [
    717100.9036918111,
    6379429.845449207
   ],
   "end_xy": [
    717099.0044221254,
    6379430.472166576
   ]
  },
  "max_3m": {
   "gradient_pct": 26.879638723657234,
   "start_distance_m": 3610.0,
   "end_distance_m": 3613.0,
   "midpoint_distance_m": 3611.5,
   "start_elevation_m": 862.2237643639974,
   "end_elevation_m": 863.0301535257071,
   "start_xy": [
    717100.9036918111,
    6379429.845449207
   ],
   "end_xy": [
    717098.0547872826,
    6379430.785525261
   ]
  }
 },
 "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": 0.005,
   "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
   ],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 0,
   "windows_masked": [],
   "advisory": [],
   "unresolved": [],
   "unstable": [
    {
     "window_m": 5.0,
     "start_m": 3610.0,
     "end_m": 3615.0,
     "raw_pct": 28.83,
     "reason": "short-step",
     "perturbations": [
      "phase+0.000/mask+0",
      "phase+0.333/mask+1",
      "phase+0.667/mask-1"
     ],
     "perturbation_reasons": [
      "short-step",
      "",
      ""
     ]
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.145,
   "obstruction_max_height_m": 41.99,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    8056.0,
    8082.0
   ],
   [
    8339.0,
    8358.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "1cc9fdcd6556a02163cb21acb2293cad3067d2a1",
   "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-mc5",
   "road_pbf": "block-batch-fr-mc5.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_E713-N6380_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E713-N6381_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E714-N6379_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E714-N6380_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E714-N6381_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E715-N6379_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E715-N6380_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E716-N6379_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E716-N6380_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E717-N6379_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E718-N6379_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E719-N6379_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E720-N6379_0m5@21LHD4LO-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T16:00:48+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc5.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc5",
  "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": [
   "E713-N6380",
   "E713-N6381",
   "E714-N6379",
   "E714-N6380",
   "E714-N6381",
   "E715-N6379",
   "E715-N6380",
   "E716-N6379",
   "E716-N6380",
   "E717-N6379",
   "E718-N6379",
   "E719-N6379",
   "E720-N6379"
  ],
  "elevation_blocks": [
   "21LHD4LO@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0713_6381_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0713_6382_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0714_6380_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0714_6381_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0714_6382_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0715_6380_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0715_6381_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0716_6380_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0716_6381_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0717_6380_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0718_6380_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0719_6380_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0720_6380_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4LO"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0713_6381_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0713_6382_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0714_6380_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0714_6381_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0714_6382_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0715_6380_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0715_6381_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0716_6380_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0716_6381_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0717_6380_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0718_6380_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0719_6380_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0720_6380_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "named-pass",
  "structure_own_ways": 17,
  "structure_mask_ranges_m": [
   [
    8061.9,
    8077.4
   ]
  ],
  "suppression_unstable": [
   5.0
  ],
  "carriageway": {
   "stations": 372,
   "stations_resolved": 372,
   "width_median_m": 6.5,
   "width_p10_m": 4.5,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.403,
   "unbounded_share": 0.597,
   "confidence_median": 0.0,
   "width_median_bounded_m": 6.5,
   "window_m": [
    3607.0,
    3632.0
   ],
   "width_at_max25_m": 2.5,
   "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": 372,
    "stations_resolved": 372,
    "width_median_m": 7.62,
    "width_p10_m": 1.25,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.715,
    "unbounded_share": 0.285,
    "confidence_median": 1.0,
    "width_median_bounded_m": 6.5,
    "window_m": [
     3607.0,
     3632.0
    ],
    "width_at_max25_m": 5.75,
    "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": "Bourgs sur Colagne",
  "county": "Loz\u00e8re",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}