{
 "ocl_version": "0.1.0",
 "name": "Col du Rouvey from Saint-Bonnet-le-Froid",
 "slug": "col-du-rouvey-from-saint-bonnet-le-froid",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.63936023004999,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 4219.0,
   "end_distance_m": 4221.0,
   "start_elevation_m": 1156.795890190185,
   "end_elevation_m": 1157.508677394786,
   "min_gradient_pct": -28.507340259864122
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.657630050421783,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 4218.0,
   "end_distance_m": 4221.0,
   "start_elevation_m": 1156.6489484932733,
   "end_elevation_m": 1157.508677394786,
   "min_gradient_pct": -22.187826605780476,
   "suppressed_min_gradient_pct": -26.93853412856697,
   "suppressed_min_location_m": [
    3210.0,
    3213.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 19.267071666999982,
   "diagnostic": false,
   "flags": [
    "suppression_unstable",
    "canopy_or_structure"
   ],
   "start_distance_m": 4216.0,
   "end_distance_m": 4221.0,
   "start_elevation_m": 1156.545323811436,
   "end_elevation_m": 1157.508677394786,
   "min_gradient_pct": -19.68288644140557
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 14.19080619737997,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 4215.0,
   "end_distance_m": 4225.0,
   "start_elevation_m": 1156.4965622728719,
   "end_elevation_m": 1157.9156428926099,
   "min_gradient_pct": -15.676315831706233
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 10.830995608091598,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded_min"
   ],
   "start_distance_m": 4673.0,
   "end_distance_m": 4693.0,
   "start_elevation_m": 1180.1566257808265,
   "end_elevation_m": 1182.3228249024448,
   "min_gradient_pct": -12.42247268821643,
   "suppressed_min_gradient_pct": -14.790958678707966,
   "suppressed_min_location_m": [
    3193.0,
    3213.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 10.830314024032305,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded_min"
   ],
   "start_distance_m": 4658.0,
   "end_distance_m": 4683.0,
   "start_elevation_m": 1178.5435745050834,
   "end_elevation_m": 1181.2511530110914,
   "min_gradient_pct": -10.293603858192,
   "suppressed_min_gradient_pct": -13.420600415930494,
   "suppressed_min_location_m": [
    3188.0,
    3213.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 10.35666837180679,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded_min"
   ],
   "start_distance_m": 4656.0,
   "end_distance_m": 4706.0,
   "start_elevation_m": 1178.3469398294196,
   "end_elevation_m": 1183.525274015323,
   "min_gradient_pct": -5.2789357119531815,
   "suppressed_min_gradient_pct": -8.09898780684307,
   "suppressed_min_location_m": [
    3176.0,
    3226.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 9.247737647966233,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 4638.0,
   "end_distance_m": 4738.0,
   "start_elevation_m": 1176.8498451233172,
   "end_elevation_m": 1186.0975827712834,
   "min_gradient_pct": -4.679317807337611
  }
 ],
 "shape": {
  "ascent_concentration": 0.419,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 46.0,
  "shape_class": "sustained"
 },
 "length_m": 5646.905592224397,
 "start_elevation_m": 1072.2309331201157,
 "end_elevation_m": 1245.8337147123984,
 "endpoint_gain_m": 173.60278159228278,
 "overall_gradient_pct": 3.0742993442519757,
 "accumulated_ascent_m": 214.458475137837,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 19.267071666999982,
   "start_distance_m": 4216.0,
   "end_distance_m": 4221.0,
   "midpoint_distance_m": 4218.5,
   "start_elevation_m": 1156.545323811436,
   "end_elevation_m": 1157.508677394786,
   "start_xy": [
    817014.5497872917,
    6450542.732826833
   ],
   "end_xy": [
    817013.9285809989,
    6450547.694087029
   ]
  },
  "max_10m": {
   "gradient_pct": 14.19080619737997,
   "start_distance_m": 4215.0,
   "end_distance_m": 4225.0,
   "midpoint_distance_m": 4220.0,
   "start_elevation_m": 1156.4965622728719,
   "end_elevation_m": 1157.9156428926099,
   "start_xy": [
    817014.6740285502,
    6450541.740574794
   ],
   "end_xy": [
    817013.7049685501,
    6450551.665362809
   ]
  },
  "max_20m": {
   "gradient_pct": 10.830995608091598,
   "start_distance_m": 4673.0,
   "end_distance_m": 4693.0,
   "midpoint_distance_m": 4683.0,
   "start_elevation_m": 1180.1566257808265,
   "end_elevation_m": 1182.3228249024448,
   "start_xy": [
    817161.8152047332,
    6450956.449784511
   ],
   "end_xy": [
    817177.3428971949,
    6450968.971201229
   ]
  },
  "max_25m": {
   "gradient_pct": 10.830314024032305,
   "start_distance_m": 4658.0,
   "end_distance_m": 4683.0,
   "midpoint_distance_m": 4670.5,
   "start_elevation_m": 1178.5435745050834,
   "end_elevation_m": 1181.2511530110914,
   "start_xy": [
    817151.5703386358,
    6450945.533419584
   ],
   "end_xy": [
    817169.2115446528,
    6450963.150453353
   ]
  },
  "max_50m": {
   "gradient_pct": 10.35666837180679,
   "start_distance_m": 4656.0,
   "end_distance_m": 4706.0,
   "midpoint_distance_m": 4681.0,
   "start_elevation_m": 1178.3469398294196,
   "end_elevation_m": 1183.525274015323,
   "start_xy": [
    817150.3283235806,
    6450943.965810385
   ],
   "end_xy": [
    817189.0089933162,
    6450974.663273295
   ]
  },
  "max_100m": {
   "gradient_pct": 9.247737647966233,
   "start_distance_m": 4638.0,
   "end_distance_m": 4738.0,
   "midpoint_distance_m": 4688.0,
   "start_elevation_m": 1176.8498451233172,
   "end_elevation_m": 1186.0975827712834,
   "start_xy": [
    817139.1501880841,
    6450929.857327588
   ],
   "end_xy": [
    817218.9877946222,
    6450985.791156366
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -19.68288644140557,
   "start_distance_m": 3198.0,
   "end_distance_m": 3203.0,
   "midpoint_distance_m": 3200.5,
   "start_elevation_m": 1111.0781714288091,
   "end_elevation_m": 1110.0940271067388,
   "start_xy": [
    816460.5101346682,
    6450065.57244996
   ],
   "end_xy": [
    816465.0571389367,
    6450067.652053812
   ]
  },
  "min_10m": {
   "gradient_pct": -15.676315831706233,
   "start_distance_m": 3198.0,
   "end_distance_m": 3208.0,
   "midpoint_distance_m": 3203.0,
   "start_elevation_m": 1111.0781714288091,
   "end_elevation_m": 1109.5105398456385,
   "start_xy": [
    816460.5101346682,
    6450065.57244996
   ],
   "end_xy": [
    816469.6041432051,
    6450069.731657664
   ]
  },
  "min_20m": {
   "gradient_pct": -12.42247268821643,
   "start_distance_m": 3188.0,
   "end_distance_m": 3208.0,
   "midpoint_distance_m": 3198.0,
   "start_elevation_m": 1111.9950343832818,
   "end_elevation_m": 1109.5105398456385,
   "start_xy": [
    816451.4161261312,
    6450061.413242254
   ],
   "end_xy": [
    816469.6041432051,
    6450069.731657664
   ]
  },
  "min_25m": {
   "gradient_pct": -10.293603858192,
   "start_distance_m": 3183.0,
   "end_distance_m": 3208.0,
   "midpoint_distance_m": 3195.5,
   "start_elevation_m": 1112.0839408101865,
   "end_elevation_m": 1109.5105398456385,
   "start_xy": [
    816446.8691218627,
    6450059.333638403
   ],
   "end_xy": [
    816469.6041432051,
    6450069.731657664
   ]
  },
  "min_50m": {
   "gradient_pct": -5.2789357119531815,
   "start_distance_m": 3159.0,
   "end_distance_m": 3209.0,
   "midpoint_distance_m": 3184.0,
   "start_elevation_m": 1112.1256521082537,
   "end_elevation_m": 1109.486184252277,
   "start_xy": [
    816425.043501374,
    6450049.351539912
   ],
   "end_xy": [
    816470.5135440589,
    6450070.147578434
   ]
  },
  "min_100m": {
   "gradient_pct": -4.679317807337611,
   "start_distance_m": 2065.0,
   "end_distance_m": 2165.0,
   "midpoint_distance_m": 2115.0,
   "start_elevation_m": 1097.1387326819895,
   "end_elevation_m": 1092.4594148746519,
   "start_xy": [
    815467.1845297491,
    6450352.013654664
   ],
   "end_xy": [
    815554.3224846588,
    6450397.168666495
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.63936023004999,
   "start_distance_m": 4219.0,
   "end_distance_m": 4221.0,
   "midpoint_distance_m": 4220.0,
   "start_elevation_m": 1156.795890190185,
   "end_elevation_m": 1157.508677394786,
   "start_xy": [
    817014.177063516,
    6450545.709582951
   ],
   "end_xy": [
    817013.9285809989,
    6450547.694087029
   ]
  },
  "max_3m": {
   "gradient_pct": 28.657630050421783,
   "start_distance_m": 4218.0,
   "end_distance_m": 4221.0,
   "midpoint_distance_m": 4219.5,
   "start_elevation_m": 1156.6489484932733,
   "end_elevation_m": 1157.508677394786,
   "start_xy": [
    817014.3013047746,
    6450544.717330912
   ],
   "end_xy": [
    817013.9285809989,
    6450547.694087029
   ]
  }
 },
 "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": {
  "no_bench_suppression": {
   "masked_fraction": 0.009,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [
    3.0,
    20.0,
    25.0,
    50.0
   ],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 0,
   "windows_masked": [],
   "advisory": [],
   "unresolved": [],
   "unstable": [
    {
     "window_m": 5.0,
     "start_m": 4216.0,
     "end_m": 4221.0,
     "raw_pct": 19.27,
     "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": 0.149,
   "obstruction_max_height_m": 29.4,
   "flagged_windows_m": [
    2,
    3,
    5.0,
    10
   ]
  },
  "excluded_ranges_m": [
   [
    3210.0,
    3260.0
   ]
  ],
  "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-mc-cols",
   "road_pbf": "block-batch-fr-mc-cols.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_E813-N6449_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E813-N6450_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E814-N6449_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E814-N6450_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E815-N6449_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E815-N6450_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E816-N6449_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E816-N6450_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E816-N6451_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E817-N6449_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E817-N6450_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E817-N6451_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E818-N6450_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E818-N6451_0m5@22LHD5NM-2025-02-27.tif"
  ],
  "calculated_at": "2026-09-22T22:28:20+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc-cols.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc-cols",
  "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": [
   "E813-N6449",
   "E813-N6450",
   "E814-N6449",
   "E814-N6450",
   "E815-N6449",
   "E815-N6450",
   "E816-N6449",
   "E816-N6450",
   "E816-N6451",
   "E817-N6449",
   "E817-N6450",
   "E817-N6451",
   "E818-N6450",
   "E818-N6451"
  ],
  "elevation_blocks": [
   "22LHD5NM@2025-02-27"
  ],
  "ign_dalles": [
   "LHD_FXX_0813_6450_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0813_6451_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0814_6450_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0814_6451_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0815_6450_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0815_6451_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0816_6450_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0816_6451_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0816_6452_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0817_6450_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0817_6451_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0817_6452_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0818_6451_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0818_6452_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD5NM"
  ],
  "ign_editions": [
   "2025-02-27"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0813_6450_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0813_6451_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0814_6450_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0814_6451_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0815_6450_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0815_6451_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0816_6450_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0816_6451_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0816_6452_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0817_6450_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0817_6451_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0817_6452_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0818_6451_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0818_6452_MNT_O_0M50_LAMB93_IGN69": "2025-02-27"
  },
  "climb_origin": "named-pass",
  "via": [
   "Col des Baraques"
  ],
  "structure_own_ways": 4,
  "suppression_unstable": [
   5.0
  ],
  "carriageway": {
   "stations": 232,
   "stations_resolved": 232,
   "width_median_m": 7.25,
   "width_p10_m": 4.5,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.237,
   "unbounded_share": 0.763,
   "confidence_median": 0.0,
   "width_median_bounded_m": 7.25,
   "window_m": [
    4658.0,
    4683.0
   ],
   "width_at_max25_m": 8.75,
   "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": 232,
    "stations_resolved": 232,
    "width_median_m": 7.75,
    "width_p10_m": 1.03,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.616,
    "unbounded_share": 0.384,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.0,
    "window_m": [
     4658.0,
     4683.0
    ],
    "width_at_max25_m": 12.0,
    "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": "Saint-Pierre-sur-Doux",
  "county": "Ard\u00e8che",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}