{
 "ocl_version": "0.1.0",
 "name": "Col des Issartets from Aumont-Aubrac",
 "slug": "col-des-issartets-from-aumont-aubrac",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 7.920665522158288,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 3784.0,
   "end_distance_m": 3786.0,
   "start_elevation_m": 1056.210391755948,
   "end_elevation_m": 1056.3688050663911,
   "min_gradient_pct": -5.871171273975051,
   "suppressed_max_gradient_pct": 272.41199522588886,
   "suppressed_location_m": [
    1490.0,
    1492.0
   ],
   "suppressed_min_gradient_pct": -262.22910123723295,
   "suppressed_min_location_m": [
    1487.0,
    1489.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 7.263467411257807,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 3985.0,
   "end_distance_m": 3988.0,
   "start_elevation_m": 1066.5549523851028,
   "end_elevation_m": 1066.7728564074405,
   "min_gradient_pct": -5.241860897035622,
   "suppressed_max_gradient_pct": 183.60301196509377,
   "suppressed_location_m": [
    1490.0,
    1493.0
   ],
   "suppressed_min_gradient_pct": -175.2183901346901,
   "suppressed_min_location_m": [
    1486.0,
    1489.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 6.672787061024792,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 4275.0,
   "end_distance_m": 4280.0,
   "start_elevation_m": 1081.8400364294978,
   "end_elevation_m": 1082.173675782549,
   "min_gradient_pct": -5.316774885100131,
   "suppressed_max_gradient_pct": 111.48557963326766,
   "suppressed_location_m": [
    1490.0,
    1495.0
   ],
   "suppressed_min_gradient_pct": -104.7922097758692,
   "suppressed_min_location_m": [
    1485.0,
    1490.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 6.1579069114168306,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 3768.0,
   "end_distance_m": 3778.0,
   "start_elevation_m": 1055.3116381189075,
   "end_elevation_m": 1055.9274288100492,
   "min_gradient_pct": -5.010760114087134,
   "suppressed_max_gradient_pct": 57.890412477368045,
   "suppressed_location_m": [
    1490.0,
    1500.0
   ],
   "suppressed_min_gradient_pct": -52.06859888941153,
   "suppressed_min_location_m": [
    2257.0,
    2267.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 5.852082526612321,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 4525.0,
   "end_distance_m": 4545.0,
   "start_elevation_m": 1094.8882876773034,
   "end_elevation_m": 1096.058704182626,
   "min_gradient_pct": -4.695154571418243,
   "suppressed_max_gradient_pct": 30.981106833592094,
   "suppressed_location_m": [
    1490.0,
    1510.0
   ],
   "suppressed_min_gradient_pct": -34.62845906526354,
   "suppressed_min_location_m": [
    2254.0,
    2274.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 5.83693662740734,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 4522.0,
   "end_distance_m": 4547.0,
   "start_elevation_m": 1094.7119257868703,
   "end_elevation_m": 1096.1711599437222,
   "min_gradient_pct": -4.626808601145967,
   "suppressed_max_gradient_pct": 25.64201752799272,
   "suppressed_location_m": [
    1490.0,
    1515.0
   ],
   "suppressed_min_gradient_pct": -28.076774868659413,
   "suppressed_min_location_m": [
    2249.0,
    2274.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 5.607373060726786,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 3985.0,
   "end_distance_m": 4035.0,
   "start_elevation_m": 1066.5549523851028,
   "end_elevation_m": 1069.3586389154661,
   "min_gradient_pct": -4.339887891891067,
   "suppressed_max_gradient_pct": 14.769157910336617,
   "suppressed_location_m": [
    1490.0,
    1540.0
   ],
   "suppressed_min_gradient_pct": -15.603791091841686,
   "suppressed_min_location_m": [
    2224.0,
    2274.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 5.404097973054377,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 3953.0,
   "end_distance_m": 4053.0,
   "start_elevation_m": 1064.8991802004543,
   "end_elevation_m": 1070.3032781735087,
   "min_gradient_pct": -4.0384776521686945,
   "suppressed_max_gradient_pct": 9.34375768865334,
   "suppressed_location_m": [
    1490.0,
    1590.0
   ],
   "suppressed_min_gradient_pct": -8.857449033906732,
   "suppressed_min_location_m": [
    2174.0,
    2274.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.409,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 26.0,
  "shape_class": "sustained"
 },
 "length_m": 5441.0000000002365,
 "start_elevation_m": 1009.6272696601832,
 "end_elevation_m": 1127.31427012575,
 "endpoint_gain_m": 117.68700046556683,
 "overall_gradient_pct": 2.1629663750332973,
 "accumulated_ascent_m": 165.34613907515575,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 6.672787061024792,
   "start_distance_m": 4275.0,
   "end_distance_m": 4280.0,
   "midpoint_distance_m": 4277.5,
   "start_elevation_m": 1081.8400364294978,
   "end_elevation_m": 1082.173675782549,
   "start_xy": [
    720102.7831618697,
    6395460.710000749
   ],
   "end_xy": [
    720104.4225210844,
    6395455.986389697
   ]
  },
  "max_10m": {
   "gradient_pct": 6.1579069114168306,
   "start_distance_m": 3768.0,
   "end_distance_m": 3778.0,
   "midpoint_distance_m": 3773.0,
   "start_elevation_m": 1055.3116381189075,
   "end_elevation_m": 1055.9274288100492,
   "start_xy": [
    719959.9904102649,
    6395940.7207749635
   ],
   "end_xy": [
    719959.3501774784,
    6395930.74129091
   ]
  },
  "max_20m": {
   "gradient_pct": 5.852082526612321,
   "start_distance_m": 4525.0,
   "end_distance_m": 4545.0,
   "midpoint_distance_m": 4535.0,
   "start_elevation_m": 1094.8882876773034,
   "end_elevation_m": 1096.058704182626,
   "start_xy": [
    720094.0542553692,
    6395218.013715133
   ],
   "end_xy": [
    720085.6709946167,
    6395199.85549553
   ]
  },
  "max_25m": {
   "gradient_pct": 5.83693662740734,
   "start_distance_m": 4522.0,
   "end_distance_m": 4547.0,
   "midpoint_distance_m": 4534.5,
   "start_elevation_m": 1094.7119257868703,
   "end_elevation_m": 1096.1711599437222,
   "start_xy": [
    720095.3117444821,
    6395220.737448074
   ],
   "end_xy": [
    720084.8326685413,
    6395198.03967357
   ]
  },
  "max_50m": {
   "gradient_pct": 5.607373060726786,
   "start_distance_m": 3985.0,
   "end_distance_m": 4035.0,
   "midpoint_distance_m": 4010.0,
   "start_elevation_m": 1066.5549523851028,
   "end_elevation_m": 1069.3586389154661,
   "start_xy": [
    719991.3413395116,
    6395728.289034463
   ],
   "end_xy": [
    720009.1196660418,
    6395681.556485787
   ]
  },
  "max_100m": {
   "gradient_pct": 5.404097973054377,
   "start_distance_m": 3953.0,
   "end_distance_m": 4053.0,
   "midpoint_distance_m": 4003.0,
   "start_elevation_m": 1064.8991802004543,
   "end_elevation_m": 1070.3032781735087,
   "start_xy": [
    719980.0509668399,
    6395758.226701504
   ],
   "end_xy": [
    720015.8828562171,
    6395664.875928254
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.316774885100131,
   "start_distance_m": 2375.0,
   "end_distance_m": 2380.0,
   "midpoint_distance_m": 2377.5,
   "start_elevation_m": 1047.9015056924493,
   "end_elevation_m": 1047.6356669481943,
   "start_xy": [
    720537.5508207129,
    6397138.755883675
   ],
   "end_xy": [
    720535.0073917749,
    6397134.451122447
   ]
  },
  "min_10m": {
   "gradient_pct": -5.010760114087134,
   "start_distance_m": 2374.0,
   "end_distance_m": 2384.0,
   "midpoint_distance_m": 2379.0,
   "start_elevation_m": 1047.9474668210569,
   "end_elevation_m": 1047.4463908096482,
   "start_xy": [
    720538.0595065005,
    6397139.616835921
   ],
   "end_xy": [
    720532.9726486244,
    6397131.007313464
   ]
  },
  "min_20m": {
   "gradient_pct": -4.695154571418243,
   "start_distance_m": 2363.0,
   "end_distance_m": 2383.0,
   "midpoint_distance_m": 2373.0,
   "start_elevation_m": 1048.4317288270572,
   "end_elevation_m": 1047.4926979127736,
   "start_xy": [
    720544.1118940936,
    6397148.792567909
   ],
   "end_xy": [
    720533.4813344121,
    6397131.868265709
   ]
  },
  "min_25m": {
   "gradient_pct": -4.626808601145967,
   "start_distance_m": 2359.0,
   "end_distance_m": 2384.0,
   "midpoint_distance_m": 2371.5,
   "start_elevation_m": 1048.6030929599347,
   "end_elevation_m": 1047.4463908096482,
   "start_xy": [
    720546.4108631682,
    6397152.065905837
   ],
   "end_xy": [
    720532.9726486244,
    6397131.007313464
   ]
  },
  "min_50m": {
   "gradient_pct": -4.339887891891067,
   "start_distance_m": 2348.0,
   "end_distance_m": 2398.0,
   "midpoint_distance_m": 2373.0,
   "start_elevation_m": 1049.0330649548314,
   "end_elevation_m": 1046.8631210088859,
   "start_xy": [
    720552.7851910735,
    6397161.026750679
   ],
   "end_xy": [
    720526.7254387885,
    6397118.50180286
   ]
  },
  "min_100m": {
   "gradient_pct": -4.0384776521686945,
   "start_distance_m": 2345.0,
   "end_distance_m": 2445.0,
   "midpoint_distance_m": 2395.0,
   "start_elevation_m": 1049.1494555666093,
   "end_elevation_m": 1045.1109779144406,
   "start_xy": [
    720554.7544692826,
    6397163.289921759
   ],
   "end_xy": [
    720516.8382393076,
    6397073.178229269
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 7.920665522158288,
   "start_distance_m": 3784.0,
   "end_distance_m": 3786.0,
   "midpoint_distance_m": 3785.0,
   "start_elevation_m": 1056.210391755948,
   "end_elevation_m": 1056.3688050663911,
   "start_xy": [
    719958.9660378065,
    6395924.753600478
   ],
   "end_xy": [
    719958.8379912492,
    6395922.7577036675
   ]
  },
  "max_3m": {
   "gradient_pct": 7.263467411257807,
   "start_distance_m": 3985.0,
   "end_distance_m": 3988.0,
   "midpoint_distance_m": 3986.5,
   "start_elevation_m": 1066.5549523851028,
   "end_elevation_m": 1066.7728564074405,
   "start_xy": [
    719991.3413395116,
    6395728.289034463
   ],
   "end_xy": [
    719992.4080391034,
    6395725.485081542
   ]
  }
 },
 "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": 0.03,
   "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,
    100.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.016,
   "obstruction_max_height_m": 12.93,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    54.0,
    84.0
   ],
   [
    692.0,
    697.0
   ],
   [
    700.0,
    708.0
   ],
   [
    1482.0,
    1497.0
   ],
   [
    2235.0,
    2315.0
   ],
   [
    3451.0,
    3469.0
   ]
  ],
  "review": [],
  "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_E719-N6394_0m5@21LHD4LN-2025-02-10.tif",
   "data/cache/fr/ign-lidarhd_dtm_E719-N6395_0m5@21LHD4LN-2025-02-10.tif",
   "data/cache/fr/ign-lidarhd_dtm_E719-N6396_0m5@21LHD4LN-2025-02-10.tif",
   "data/cache/fr/ign-lidarhd_dtm_E720-N6394_0m5@21LHD4LN-2025-02-10.tif",
   "data/cache/fr/ign-lidarhd_dtm_E720-N6395_0m5@21LHD4LN-2025-02-10.tif",
   "data/cache/fr/ign-lidarhd_dtm_E720-N6396_0m5@21LHD4LN-2025-02-10.tif",
   "data/cache/fr/ign-lidarhd_dtm_E720-N6397_0m5@21LHD4LN-2025-02-10.tif",
   "data/cache/fr/ign-lidarhd_dtm_E721-N6397_0m5@21LHD4LN-2025-02-10.tif",
   "data/cache/fr/ign-lidarhd_dtm_E721-N6398_0m5@21LHD4LN-2025-02-10.tif",
   "data/cache/fr/ign-lidarhd_dtm_E722-N6398_0m5@21LHD4LN-2025-02-10.tif"
  ],
  "calculated_at": "2026-09-22T16:08:24+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": [
   "E719-N6394",
   "E719-N6395",
   "E719-N6396",
   "E720-N6394",
   "E720-N6395",
   "E720-N6396",
   "E720-N6397",
   "E721-N6397",
   "E721-N6398",
   "E722-N6398"
  ],
  "elevation_blocks": [
   "21LHD4LN@2025-02-10"
  ],
  "ign_dalles": [
   "LHD_FXX_0719_6395_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0719_6396_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0719_6397_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0720_6395_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0720_6396_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0720_6397_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0720_6398_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0721_6398_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0721_6399_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0722_6399_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4LN"
  ],
  "ign_editions": [
   "2025-02-10"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0719_6395_MNT_O_0M50_LAMB93_IGN69": "2025-02-10",
   "LHD_FXX_0719_6396_MNT_O_0M50_LAMB93_IGN69": "2025-02-10",
   "LHD_FXX_0719_6397_MNT_O_0M50_LAMB93_IGN69": "2025-02-10",
   "LHD_FXX_0720_6395_MNT_O_0M50_LAMB93_IGN69": "2025-02-10",
   "LHD_FXX_0720_6396_MNT_O_0M50_LAMB93_IGN69": "2025-02-10",
   "LHD_FXX_0720_6397_MNT_O_0M50_LAMB93_IGN69": "2025-02-10",
   "LHD_FXX_0720_6398_MNT_O_0M50_LAMB93_IGN69": "2025-02-10",
   "LHD_FXX_0721_6398_MNT_O_0M50_LAMB93_IGN69": "2025-02-10",
   "LHD_FXX_0721_6399_MNT_O_0M50_LAMB93_IGN69": "2025-02-10",
   "LHD_FXX_0722_6399_MNT_O_0M50_LAMB93_IGN69": "2025-02-10"
  },
  "route_summit_trim_m": 59.7,
  "route_summit_trim_loss_m": 6.3,
  "climb_origin": "named-pass",
  "structure_own_ways": 7,
  "structure_mask_ranges_m": [
   [
    2261.8,
    2307.3
   ]
  ],
  "mask_basin_extension_m": 24.0,
  "carriageway": {
   "stations": 224,
   "stations_resolved": 224,
   "width_median_m": 9.75,
   "width_p10_m": 8.0,
   "width_min_m": 4.0,
   "width_max_m": 12.0,
   "bounded_share": 0.013,
   "unbounded_share": 0.987,
   "confidence_median": 0.0,
   "width_median_bounded_m": 8.75,
   "window_m": [
    4522.0,
    4547.0
   ],
   "width_at_max25_m": 10.25,
   "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": 224,
    "stations_resolved": 224,
    "width_median_m": 12.0,
    "width_p10_m": 10.25,
    "width_min_m": 7.5,
    "width_max_m": 12.0,
    "bounded_share": 0.022,
    "unbounded_share": 0.978,
    "confidence_median": 0.0,
    "width_median_bounded_m": 9.75,
    "window_m": [
     4522.0,
     4547.0
    ],
    "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": "Peyre en Aubrac",
  "county": "Loz\u00e8re",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}