{
 "ocl_version": "0.1.0",
 "name": "Col de Chire Blanc from Mazoires",
 "slug": "col-de-chire-blanc-from-mazoires",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 18.927055942981497,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1102.0,
   "end_distance_m": 1104.0,
   "start_elevation_m": 1037.8702026678943,
   "end_elevation_m": 1038.248743786754,
   "min_gradient_pct": -13.143256444266171,
   "suppressed_max_gradient_pct": 51.24313720529017,
   "suppressed_location_m": [
    210.0,
    212.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 18.021166722208665,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1039.0,
   "end_distance_m": 1042.0,
   "start_elevation_m": 1027.6363410188194,
   "end_elevation_m": 1028.1769760204857,
   "min_gradient_pct": -12.767183610060329,
   "suppressed_max_gradient_pct": 44.500576225849876,
   "suppressed_location_m": [
    210.0,
    213.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 17.643936550066428,
   "diagnostic": false,
   "flags": [
    "suppression_unstable",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1039.0,
   "end_distance_m": 1044.0,
   "start_elevation_m": 1027.6363410188194,
   "end_elevation_m": 1028.5185378463227,
   "min_gradient_pct": -11.994470254740008,
   "suppressed_max_gradient_pct": 33.03720386322766,
   "suppressed_location_m": [
    208.0,
    213.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.30542815181707,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1046.0,
   "end_distance_m": 1056.0,
   "start_elevation_m": 1028.833807481948,
   "end_elevation_m": 1030.5643502971297,
   "min_gradient_pct": -11.675662760849264,
   "suppressed_max_gradient_pct": 25.072741674566714,
   "suppressed_location_m": [
    203.0,
    213.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.111480735189843,
   "diagnostic": false,
   "flags": [
    "suppression_unstable",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1039.0,
   "end_distance_m": 1059.0,
   "start_elevation_m": 1027.6363410188194,
   "end_elevation_m": 1031.0586371658574,
   "min_gradient_pct": -10.7210147505117,
   "suppressed_max_gradient_pct": 21.017603881418836,
   "suppressed_location_m": [
    193.0,
    213.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.039517855802842,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1030.0,
   "end_distance_m": 1055.0,
   "start_elevation_m": 1026.1412215031633,
   "end_elevation_m": 1030.401100967114,
   "min_gradient_pct": -10.064510129321661,
   "suppressed_max_gradient_pct": 20.549687609899593,
   "suppressed_location_m": [
    188.0,
    213.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.59872913645404,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1018.0,
   "end_distance_m": 1068.0,
   "start_elevation_m": 1024.1932209425927,
   "end_elevation_m": 1032.4925855108197,
   "min_gradient_pct": -6.777199164818967,
   "suppressed_max_gradient_pct": 17.02192047953804,
   "suppressed_location_m": [
    163.0,
    213.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.9152492743533,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1016.0,
   "end_distance_m": 1116.0,
   "start_elevation_m": 1023.9244674039348,
   "end_elevation_m": 1039.8397166782881,
   "min_gradient_pct": 1.3160349655950085
  }
 ],
 "shape": {
  "ascent_concentration": 0.353,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 214.0,
  "shape_class": "sustained"
 },
 "length_m": 1501.661188844595,
 "start_elevation_m": 942.0761928749957,
 "end_elevation_m": 1065.2668418105457,
 "endpoint_gain_m": 123.19064893554992,
 "overall_gradient_pct": 8.203624749091038,
 "accumulated_ascent_m": 127.56574623137556,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 17.643936550066428,
   "start_distance_m": 1039.0,
   "end_distance_m": 1044.0,
   "midpoint_distance_m": 1041.5,
   "start_elevation_m": 1027.6363410188194,
   "end_elevation_m": 1028.5185378463227,
   "start_xy": [
    704980.9673974338,
    6477046.784333878
   ],
   "end_xy": [
    704984.6661123594,
    6477050.148781515
   ]
  },
  "max_10m": {
   "gradient_pct": 17.30542815181707,
   "start_distance_m": 1046.0,
   "end_distance_m": 1056.0,
   "midpoint_distance_m": 1051.0,
   "start_elevation_m": 1028.833807481948,
   "end_elevation_m": 1030.5643502971297,
   "start_xy": [
    704986.1455983296,
    6477051.4945605695
   ],
   "end_xy": [
    704993.5430281807,
    6477058.223455843
   ]
  },
  "max_20m": {
   "gradient_pct": 17.111480735189843,
   "start_distance_m": 1039.0,
   "end_distance_m": 1059.0,
   "midpoint_distance_m": 1049.0,
   "start_elevation_m": 1027.6363410188194,
   "end_elevation_m": 1031.0586371658574,
   "start_xy": [
    704980.9673974338,
    6477046.784333878
   ],
   "end_xy": [
    704995.762257136,
    6477060.242124424
   ]
  },
  "max_25m": {
   "gradient_pct": 17.039517855802842,
   "start_distance_m": 1030.0,
   "end_distance_m": 1055.0,
   "midpoint_distance_m": 1042.5,
   "start_elevation_m": 1026.1412215031633,
   "end_elevation_m": 1030.401100967114,
   "start_xy": [
    704974.3092790747,
    6477040.728805194
   ],
   "end_xy": [
    704992.8032851956,
    6477057.550566316
   ]
  },
  "max_50m": {
   "gradient_pct": 16.59872913645404,
   "start_distance_m": 1018.0,
   "end_distance_m": 1068.0,
   "midpoint_distance_m": 1043.0,
   "start_elevation_m": 1024.1932209425927,
   "end_elevation_m": 1032.4925855108197,
   "start_xy": [
    704965.3869206784,
    6477032.704372463
   ],
   "end_xy": [
    705002.1709966966,
    6477066.559412026
   ]
  },
  "max_100m": {
   "gradient_pct": 15.9152492743533,
   "start_distance_m": 1016.0,
   "end_distance_m": 1116.0,
   "midpoint_distance_m": 1066.0,
   "start_elevation_m": 1023.9244674039348,
   "end_elevation_m": 1039.8397166782881,
   "start_xy": [
    704963.8998609458,
    6477031.366967008
   ],
   "end_xy": [
    705041.8719749687,
    6477091.129551682
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.994470254740008,
   "start_distance_m": 115.0,
   "end_distance_m": 120.0,
   "midpoint_distance_m": 117.5,
   "start_elevation_m": 953.1910372117575,
   "end_elevation_m": 952.5913136990205,
   "start_xy": [
    704236.3136626654,
    6476592.375559515
   ],
   "end_xy": [
    704239.6585963988,
    6476596.091931175
   ]
  },
  "min_10m": {
   "gradient_pct": -11.675662760849264,
   "start_distance_m": 110.0,
   "end_distance_m": 120.0,
   "midpoint_distance_m": 115.0,
   "start_elevation_m": 953.7588799751054,
   "end_elevation_m": 952.5913136990205,
   "start_xy": [
    704232.9687289322,
    6476588.659187854
   ],
   "end_xy": [
    704239.6585963988,
    6476596.091931175
   ]
  },
  "min_20m": {
   "gradient_pct": -10.7210147505117,
   "start_distance_m": 106.0,
   "end_distance_m": 126.0,
   "midpoint_distance_m": 116.0,
   "start_elevation_m": 954.1323891657358,
   "end_elevation_m": 951.9881862156335,
   "start_xy": [
    704230.2927819456,
    6476585.686090526
   ],
   "end_xy": [
    704243.8140638955,
    6476600.41907311
   ]
  },
  "min_25m": {
   "gradient_pct": -10.064510129321661,
   "start_distance_m": 105.0,
   "end_distance_m": 130.0,
   "midpoint_distance_m": 117.5,
   "start_elevation_m": 954.2248526738858,
   "end_elevation_m": 951.7087251415554,
   "start_xy": [
    704229.6237951989,
    6476584.942816194
   ],
   "end_xy": [
    704246.6042876611,
    6476603.2851944165
   ]
  },
  "min_50m": {
   "gradient_pct": -6.777199164818967,
   "start_distance_m": 97.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 122.0,
   "start_elevation_m": 954.4163222189634,
   "end_elevation_m": 951.0277226365539,
   "start_xy": [
    704224.398723223,
    6476578.885428773
   ],
   "end_xy": [
    704260.5663790979,
    6476612.858520707
   ]
  },
  "min_100m": {
   "gradient_pct": 1.3160349655950085,
   "start_distance_m": 74.0,
   "end_distance_m": 174.0,
   "midpoint_distance_m": 124.0,
   "start_elevation_m": 952.1464997687376,
   "end_elevation_m": 953.4625347343326,
   "start_xy": [
    704209.4643399613,
    6476561.393596534
   ],
   "end_xy": [
    704283.5231516542,
    6476627.056522637
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 18.927055942981497,
   "start_distance_m": 1102.0,
   "end_distance_m": 1104.0,
   "midpoint_distance_m": 1103.0,
   "start_elevation_m": 1037.8702026678943,
   "end_elevation_m": 1038.248743786754,
   "start_xy": [
    705028.3215241875,
    6477087.728925103
   ],
   "end_xy": [
    705030.2226922265,
    6477088.349859953
   ]
  },
  "max_3m": {
   "gradient_pct": 18.021166722208665,
   "start_distance_m": 1039.0,
   "end_distance_m": 1042.0,
   "midpoint_distance_m": 1040.5,
   "start_elevation_m": 1027.6363410188194,
   "end_elevation_m": 1028.1769760204857,
   "start_xy": [
    704980.9673974338,
    6477046.784333878
   ],
   "end_xy": [
    704983.1866263892,
    6477048.80300246
   ]
  }
 },
 "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": {
  "texture_suppression": {
   "masked_fraction": 0.04,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 188.0,
     "end_m": 213.0,
     "raw_pct": 20.55,
     "reason": "hump"
    },
    {
     "window_m": 25.0,
     "start_m": 29.0,
     "end_m": 54.0,
     "raw_pct": 17.77,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 32.0,
     "end_m": 52.0,
     "raw_pct": 17.86,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": [],
   "unstable": [
    {
     "window_m": 20.0,
     "start_m": 193.0,
     "end_m": 213.0,
     "raw_pct": 21.02,
     "reason": "hump",
     "perturbations": [
      "phase+0.000/mask+0",
      "phase+0.333/mask+1",
      "phase+0.667/mask-1"
     ],
     "perturbation_reasons": [
      "hump",
      "hump",
      ""
     ]
    },
    {
     "window_m": 5.0,
     "start_m": 208.0,
     "end_m": 213.0,
     "raw_pct": 33.04,
     "reason": "short-step",
     "perturbations": [
      "phase+0.000/mask+0",
      "phase+0.333/mask+1",
      "phase+0.667/mask-1"
     ],
     "perturbation_reasons": [
      "short-step",
      "short-step",
      ""
     ]
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.225,
   "obstruction_max_height_m": 17.3,
   "flagged_windows_m": [
    2,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    27.0,
    56.0
   ],
   [
    186.0,
    215.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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_E704-N6476_0m5@21LHD4LM-2025-06-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E704-N6477_0m5@21LHD4LM-2025-06-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E705-N6476_0m5@21LHD4LM-2025-06-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E705-N6477_0m5@21LHD4LM-2025-06-26.tif"
  ],
  "calculated_at": "2026-09-22T22:18:43+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": [
   "E704-N6476",
   "E704-N6477",
   "E705-N6476",
   "E705-N6477"
  ],
  "elevation_blocks": [
   "21LHD4LM@2025-06-26"
  ],
  "ign_dalles": [
   "LHD_FXX_0704_6477_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0704_6478_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0705_6477_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0705_6478_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4LM"
  ],
  "ign_editions": [
   "2025-06-26"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0704_6477_MNT_O_0M50_LAMB93_IGN69": "2025-06-26",
   "LHD_FXX_0704_6478_MNT_O_0M50_LAMB93_IGN69": "2025-06-26",
   "LHD_FXX_0705_6477_MNT_O_0M50_LAMB93_IGN69": "2025-06-26",
   "LHD_FXX_0705_6478_MNT_O_0M50_LAMB93_IGN69": "2025-06-26"
  },
  "climb_origin": "named-pass",
  "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked",
  "suppression_unstable": [
   5.0,
   20.0
  ],
  "carriageway": {
   "stations": 66,
   "stations_resolved": 66,
   "width_median_m": 4.75,
   "width_p10_m": 3.75,
   "width_min_m": 3.0,
   "width_max_m": 11.75,
   "bounded_share": 0.121,
   "unbounded_share": 0.879,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.62,
   "window_m": [
    1030.0,
    1055.0
   ],
   "width_at_max25_m": 4.75,
   "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": 66,
    "stations_resolved": 66,
    "width_median_m": 5.25,
    "width_p10_m": 0.5,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.788,
    "unbounded_share": 0.212,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.5,
    "window_m": [
     1030.0,
     1055.0
    ],
    "width_at_max25_m": 2.0,
    "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": "Mazoires",
  "county": "Puy-de-D\u00f4me",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}