{
 "ocl_version": "0.1.0",
 "name": "Col de Gage",
 "slug": "route-du-col-de-gage",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.789434106533008,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 765.0,
   "end_distance_m": 767.0,
   "start_elevation_m": 1046.461464264833,
   "end_elevation_m": 1047.0572529469637,
   "min_gradient_pct": -16.611840874634254
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.251545988000544,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 765.0,
   "end_distance_m": 768.0,
   "start_elevation_m": 1046.461464264833,
   "end_elevation_m": 1047.159010644473,
   "min_gradient_pct": -9.981394974268673
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 18.21944888249618,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 765.0,
   "end_distance_m": 770.0,
   "start_elevation_m": 1046.461464264833,
   "end_elevation_m": 1047.3724367089578,
   "min_gradient_pct": -3.6716291006769097
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.010492925917333,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 765.0,
   "end_distance_m": 775.0,
   "start_elevation_m": 1046.461464264833,
   "end_elevation_m": 1048.1625135574247,
   "min_gradient_pct": -1.1906524258984064
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 14.57968668374292,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 765.0,
   "end_distance_m": 785.0,
   "start_elevation_m": 1046.461464264833,
   "end_elevation_m": 1049.3774016015816,
   "min_gradient_pct": -0.6630339233481664
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 13.891690452192051,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 765.0,
   "end_distance_m": 790.0,
   "start_elevation_m": 1046.461464264833,
   "end_elevation_m": 1049.934386877881,
   "min_gradient_pct": -0.6010858245995223
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 11.57971594746732,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 743.0,
   "end_distance_m": 793.0,
   "start_elevation_m": 1044.53940441916,
   "end_elevation_m": 1050.3292623928937,
   "min_gradient_pct": -0.017075374221349193
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 10.240238161861726,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 704.0,
   "end_distance_m": 804.0,
   "start_elevation_m": 1041.0810005855246,
   "end_elevation_m": 1051.3212387473864,
   "min_gradient_pct": 0.6157476040650636
  }
 ],
 "shape": {
  "ascent_concentration": 0.318,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 45.0,
  "shape_class": "sustained"
 },
 "length_m": 1400.7490975111805,
 "start_elevation_m": 1005.3377738232477,
 "end_elevation_m": 1090.4599554711906,
 "endpoint_gain_m": 85.12218164794285,
 "overall_gradient_pct": 6.076904264952662,
 "accumulated_ascent_m": 86.75328178127006,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 18.21944888249618,
   "start_distance_m": 765.0,
   "end_distance_m": 770.0,
   "midpoint_distance_m": 767.5,
   "start_elevation_m": 1046.461464264833,
   "end_elevation_m": 1047.3724367089578,
   "start_xy": [
    784507.8710852277,
    6413053.22986436
   ],
   "end_xy": [
    784512.8323803723,
    6413053.850791479
   ]
  },
  "max_10m": {
   "gradient_pct": 17.010492925917333,
   "start_distance_m": 765.0,
   "end_distance_m": 775.0,
   "midpoint_distance_m": 770.0,
   "start_elevation_m": 1046.461464264833,
   "end_elevation_m": 1048.1625135574247,
   "start_xy": [
    784507.8710852277,
    6413053.22986436
   ],
   "end_xy": [
    784517.7936755168,
    6413054.4717186
   ]
  },
  "max_20m": {
   "gradient_pct": 14.57968668374292,
   "start_distance_m": 765.0,
   "end_distance_m": 785.0,
   "midpoint_distance_m": 775.0,
   "start_elevation_m": 1046.461464264833,
   "end_elevation_m": 1049.3774016015816,
   "start_xy": [
    784507.8710852277,
    6413053.22986436
   ],
   "end_xy": [
    784527.3786980872,
    6413057.138976746
   ]
  },
  "max_25m": {
   "gradient_pct": 13.891690452192051,
   "start_distance_m": 765.0,
   "end_distance_m": 790.0,
   "midpoint_distance_m": 777.5,
   "start_elevation_m": 1046.461464264833,
   "end_elevation_m": 1049.934386877881,
   "start_xy": [
    784507.8710852277,
    6413053.22986436
   ],
   "end_xy": [
    784532.0915203773,
    6413058.809098317
   ]
  },
  "max_50m": {
   "gradient_pct": 11.57971594746732,
   "start_distance_m": 743.0,
   "end_distance_m": 793.0,
   "midpoint_distance_m": 768.0,
   "start_elevation_m": 1044.53940441916,
   "end_elevation_m": 1050.3292623928937,
   "start_xy": [
    784486.0236968365,
    6413054.647307894
   ],
   "end_xy": [
    784534.9383990095,
    6413059.727794453
   ]
  },
  "max_100m": {
   "gradient_pct": 10.240238161861726,
   "start_distance_m": 704.0,
   "end_distance_m": 804.0,
   "midpoint_distance_m": 754.0,
   "start_elevation_m": 1041.0810005855246,
   "end_elevation_m": 1051.3212387473864,
   "start_xy": [
    784449.1516972883,
    6413067.179711506
   ],
   "end_xy": [
    784545.8697706239,
    6413060.954625586
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.6716291006769097,
   "start_distance_m": 886.0,
   "end_distance_m": 891.0,
   "midpoint_distance_m": 888.5,
   "start_elevation_m": 1054.9308630593725,
   "end_elevation_m": 1054.7472816043387,
   "start_xy": [
    784623.4100461209,
    6413038.4541423265
   ],
   "end_xy": [
    784627.9376196295,
    6413036.332567882
   ]
  },
  "min_10m": {
   "gradient_pct": -1.1906524258984064,
   "start_distance_m": 855.0,
   "end_distance_m": 865.0,
   "midpoint_distance_m": 860.0,
   "start_elevation_m": 1053.8607963806776,
   "end_elevation_m": 1053.7417311380877,
   "start_xy": [
    784595.339090367,
    6413051.607903882
   ],
   "end_xy": [
    784604.3942373843,
    6413047.3647549935
   ]
  },
  "min_20m": {
   "gradient_pct": -0.6630339233481664,
   "start_distance_m": 231.0,
   "end_distance_m": 251.0,
   "midpoint_distance_m": 241.0,
   "start_elevation_m": 1020.3616411589704,
   "end_elevation_m": 1020.2290343743008,
   "start_xy": [
    784105.1775683038,
    6413376.187040046
   ],
   "end_xy": [
    784117.8307975314,
    6413360.698470386
   ]
  },
  "min_25m": {
   "gradient_pct": -0.6010858245995223,
   "start_distance_m": 231.0,
   "end_distance_m": 256.0,
   "midpoint_distance_m": 243.5,
   "start_elevation_m": 1020.3616411589704,
   "end_elevation_m": 1020.2113697028205,
   "start_xy": [
    784105.1775683038,
    6413376.187040046
   ],
   "end_xy": [
    784120.9941048383,
    6413356.82632797
   ]
  },
  "min_50m": {
   "gradient_pct": -0.017075374221349193,
   "start_distance_m": 222.0,
   "end_distance_m": 272.0,
   "midpoint_distance_m": 247.0,
   "start_elevation_m": 1020.3361092767861,
   "end_elevation_m": 1020.3275715896755,
   "start_xy": [
    784099.1571736943,
    6413382.874669175
   ],
   "end_xy": [
    784131.1166882205,
    6413344.4354722425
   ]
  },
  "min_100m": {
   "gradient_pct": 0.6157476040650636,
   "start_distance_m": 216.0,
   "end_distance_m": 316.0,
   "midpoint_distance_m": 266.0,
   "start_elevation_m": 1020.2615067984625,
   "end_elevation_m": 1020.8772544025276,
   "start_xy": [
    784095.1079729376,
    6413387.302306607
   ],
   "end_xy": [
    784157.9459127692,
    6413309.563976602
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.789434106533008,
   "start_distance_m": 765.0,
   "end_distance_m": 767.0,
   "midpoint_distance_m": 766.0,
   "start_elevation_m": 1046.461464264833,
   "end_elevation_m": 1047.0572529469637,
   "start_xy": [
    784507.8710852277,
    6413053.22986436
   ],
   "end_xy": [
    784509.8556032856,
    6413053.4782352075
   ]
  },
  "max_3m": {
   "gradient_pct": 23.251545988000544,
   "start_distance_m": 765.0,
   "end_distance_m": 768.0,
   "midpoint_distance_m": 766.5,
   "start_elevation_m": 1046.461464264833,
   "end_elevation_m": 1047.159010644473,
   "start_xy": [
    784507.8710852277,
    6413053.22986436
   ],
   "end_xy": [
    784510.8478623145,
    6413053.602420632
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.259,
   "obstruction_max_height_m": 24.47,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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_E784-N6412_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E784-N6413_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E785-N6412_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E785-N6413_0m5@21LHD4MN-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T22:42:35+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": [
   "E784-N6412",
   "E784-N6413",
   "E785-N6412",
   "E785-N6413"
  ],
  "elevation_blocks": [
   "21LHD4MN@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0784_6413_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0784_6414_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0785_6413_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0785_6414_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MN"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0784_6413_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0784_6414_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0785_6413_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0785_6414_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "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",
  "carriageway": {
   "stations": 62,
   "stations_resolved": 62,
   "width_median_m": 7.88,
   "width_p10_m": 5.3,
   "width_min_m": 2.25,
   "width_max_m": 12.0,
   "bounded_share": 0.177,
   "unbounded_share": 0.823,
   "confidence_median": 0.0,
   "width_median_bounded_m": 7.5,
   "window_m": [
    765.0,
    790.0
   ],
   "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": 62,
    "stations_resolved": 62,
    "width_median_m": 7.88,
    "width_p10_m": 1.25,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.613,
    "unbounded_share": 0.387,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.25,
    "window_m": [
     765.0,
     790.0
    ],
    "width_at_max25_m": 3.12,
    "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
   }
  },
  "named_from": {
   "col": "Col de Gage",
   "source": "climbs/fr-passes-massif-central.yaml",
   "pass_node_distance_m": 0.0,
   "was": "Route du Col de Gage",
   "reason_code": "named-from-pass-list"
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Le Lac-d'Issarl\u00e8s",
  "county": "Ard\u00e8che",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}