{
 "ocl_version": "0.1.0",
 "name": "Mont\u00e9e du Sourd",
 "slug": "montee-du-sourd",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.631996745116226,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1875.0,
   "end_distance_m": 1877.0,
   "start_elevation_m": 455.3790327891011,
   "end_elevation_m": 455.8916727240034,
   "min_gradient_pct": -4.416951918764767
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.070800392692643,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1875.0,
   "end_distance_m": 1878.0,
   "start_elevation_m": 455.3790327891011,
   "end_elevation_m": 456.13115680088185,
   "min_gradient_pct": -3.9502515468882393
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.706935565138792,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1871.0,
   "end_distance_m": 1876.0,
   "start_elevation_m": 454.42157854518507,
   "end_elevation_m": 455.656925323442,
   "min_gradient_pct": -3.5484670029666177
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.574175019590143,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1871.0,
   "end_distance_m": 1881.0,
   "start_elevation_m": 454.42157854518507,
   "end_elevation_m": 456.8789960471441,
   "min_gradient_pct": -3.074822913480375
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.091076902049906,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1867.0,
   "end_distance_m": 1887.0,
   "start_elevation_m": 453.4498987429751,
   "end_elevation_m": 458.2681141233851,
   "min_gradient_pct": -2.534536700250669
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.924780244108433,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1865.0,
   "end_distance_m": 1890.0,
   "start_elevation_m": 452.9963484536605,
   "end_elevation_m": 458.9775435146876,
   "min_gradient_pct": -2.217126742437131
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.300526946878904,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1846.0,
   "end_distance_m": 1896.0,
   "start_elevation_m": 448.68703900238296,
   "end_elevation_m": 460.3373024758224,
   "min_gradient_pct": -1.7811245502642805
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 22.317891940054892,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1820.0,
   "end_distance_m": 1920.0,
   "start_elevation_m": 443.07984482266113,
   "end_elevation_m": 465.397736762716,
   "min_gradient_pct": -1.6028777263153415
  }
 ],
 "shape": {
  "ascent_concentration": 0.351,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 290.0,
  "shape_class": "sustained"
 },
 "length_m": 1933.3235278041666,
 "start_elevation_m": 301.95281088671027,
 "end_elevation_m": 467.6995660146455,
 "endpoint_gain_m": 165.74675512793522,
 "overall_gradient_pct": 8.573151505386548,
 "accumulated_ascent_m": 169.28595418925272,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.706935565138792,
   "start_distance_m": 1871.0,
   "end_distance_m": 1876.0,
   "midpoint_distance_m": 1873.5,
   "start_elevation_m": 454.42157854518507,
   "end_elevation_m": 455.656925323442,
   "start_xy": [
    824971.3684012986,
    6540721.477545897
   ],
   "end_xy": [
    824971.1414205139,
    6540716.482700582
   ]
  },
  "max_10m": {
   "gradient_pct": 24.574175019590143,
   "start_distance_m": 1871.0,
   "end_distance_m": 1881.0,
   "midpoint_distance_m": 1876.0,
   "start_elevation_m": 454.42157854518507,
   "end_elevation_m": 456.8789960471441,
   "start_xy": [
    824971.3684012986,
    6540721.477545897
   ],
   "end_xy": [
    824970.9144397291,
    6540711.487855266
   ]
  },
  "max_20m": {
   "gradient_pct": 24.091076902049906,
   "start_distance_m": 1867.0,
   "end_distance_m": 1887.0,
   "midpoint_distance_m": 1877.0,
   "start_elevation_m": 453.4498987429751,
   "end_elevation_m": 458.2681141233851,
   "start_xy": [
    824971.5499859266,
    6540725.473422149
   ],
   "end_xy": [
    824970.6420627872,
    6540705.494040888
   ]
  },
  "max_25m": {
   "gradient_pct": 23.924780244108433,
   "start_distance_m": 1865.0,
   "end_distance_m": 1890.0,
   "midpoint_distance_m": 1877.5,
   "start_elevation_m": 452.9963484536605,
   "end_elevation_m": 458.9775435146876,
   "start_xy": [
    824971.6407782405,
    6540727.4713602755
   ],
   "end_xy": [
    824970.5058743163,
    6540702.497133699
   ]
  },
  "max_50m": {
   "gradient_pct": 23.300526946878904,
   "start_distance_m": 1846.0,
   "end_distance_m": 1896.0,
   "midpoint_distance_m": 1871.0,
   "start_elevation_m": 448.68703900238296,
   "end_elevation_m": 460.3373024758224,
   "start_xy": [
    824972.4433905398,
    6540746.454382662
   ],
   "end_xy": [
    824970.2334973746,
    6540696.50331932
   ]
  },
  "max_100m": {
   "gradient_pct": 22.317891940054892,
   "start_distance_m": 1820.0,
   "end_distance_m": 1920.0,
   "midpoint_distance_m": 1870.0,
   "start_elevation_m": 443.07984482266113,
   "end_elevation_m": 465.397736762716,
   "start_xy": [
    824973.5263247987,
    6540772.431820053
   ],
   "end_xy": [
    824966.7616023475,
    6540672.7911684085
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.5484670029666177,
   "start_distance_m": 1146.0,
   "end_distance_m": 1151.0,
   "midpoint_distance_m": 1148.5,
   "start_elevation_m": 414.65912526989683,
   "end_elevation_m": 414.4817019197485,
   "start_xy": [
    825367.0784524071,
    6540445.390799617
   ],
   "end_xy": [
    825363.3373347281,
    6540448.70803318
   ]
  },
  "min_10m": {
   "gradient_pct": -3.074822913480375,
   "start_distance_m": 1141.0,
   "end_distance_m": 1151.0,
   "midpoint_distance_m": 1146.0,
   "start_elevation_m": 414.78918421109654,
   "end_elevation_m": 414.4817019197485,
   "start_xy": [
    825370.8195700863,
    6540442.073566054
   ],
   "end_xy": [
    825363.3373347281,
    6540448.70803318
   ]
  },
  "min_20m": {
   "gradient_pct": -2.534536700250669,
   "start_distance_m": 1139.0,
   "end_distance_m": 1159.0,
   "midpoint_distance_m": 1149.0,
   "start_elevation_m": 414.83415389677907,
   "end_elevation_m": 414.32724655672894,
   "start_xy": [
    825372.316017158,
    6540440.746672629
   ],
   "end_xy": [
    825357.3515464414,
    6540454.015606881
   ]
  },
  "min_25m": {
   "gradient_pct": -2.217126742437131,
   "start_distance_m": 1139.0,
   "end_distance_m": 1164.0,
   "midpoint_distance_m": 1151.5,
   "start_elevation_m": 414.83415389677907,
   "end_elevation_m": 414.2798722111698,
   "start_xy": [
    825372.316017158,
    6540440.746672629
   ],
   "end_xy": [
    825353.6104287624,
    6540457.332840444
   ]
  },
  "min_50m": {
   "gradient_pct": -1.7811245502642805,
   "start_distance_m": 1105.0,
   "end_distance_m": 1155.0,
   "midpoint_distance_m": 1130.0,
   "start_elevation_m": 415.2619790171853,
   "end_elevation_m": 414.37141674205316,
   "start_xy": [
    825397.755617376,
    6540418.189484402
   ],
   "end_xy": [
    825360.3444405848,
    6540451.36182003
   ]
  },
  "min_100m": {
   "gradient_pct": -1.6028777263153415,
   "start_distance_m": 1074.0,
   "end_distance_m": 1174.0,
   "midpoint_distance_m": 1124.0,
   "start_elevation_m": 415.74202384791175,
   "end_elevation_m": 414.1391461215964,
   "start_xy": [
    825418.3014590545,
    6540395.508829136
   ],
   "end_xy": [
    825346.1281934042,
    6540463.967307569
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.631996745116226,
   "start_distance_m": 1875.0,
   "end_distance_m": 1877.0,
   "midpoint_distance_m": 1876.0,
   "start_elevation_m": 455.3790327891011,
   "end_elevation_m": 455.8916727240034,
   "start_xy": [
    824971.1868166708,
    6540717.481669645
   ],
   "end_xy": [
    824971.0960243569,
    6540715.4837315185
   ]
  },
  "max_3m": {
   "gradient_pct": 25.070800392692643,
   "start_distance_m": 1875.0,
   "end_distance_m": 1878.0,
   "midpoint_distance_m": 1876.5,
   "start_elevation_m": 455.3790327891011,
   "end_elevation_m": 456.13115680088185,
   "start_xy": [
    824971.1868166708,
    6540717.481669645
   ],
   "end_xy": [
    824971.0506281999,
    6540714.484762455
   ]
  }
 },
 "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": 0.032,
   "obstruction_max_height_m": 12.16,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "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-mc8",
   "road_pbf": "block-batch-fr-mc8.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_E824-N6540_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E825-N6540_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E826-N6540_0m5@21LHD5NK-2025-02-20.tif"
  ],
  "calculated_at": "2026-09-22T15:43:57+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc8.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc8",
  "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": [
   "E824-N6540",
   "E825-N6540",
   "E826-N6540"
  ],
  "elevation_blocks": [
   "21LHD5NK@2025-02-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0824_6541_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0825_6541_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0826_6541_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD5NK"
  ],
  "ign_editions": [
   "2025-02-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0824_6541_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0825_6541_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0826_6541_MNT_O_0M50_LAMB93_IGN69": "2025-02-20"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 9,
  "carriageway": {
   "stations": 83,
   "stations_resolved": 83,
   "width_median_m": 5.5,
   "width_p10_m": 3.5,
   "width_min_m": 1.5,
   "width_max_m": 11.0,
   "bounded_share": 0.41,
   "unbounded_share": 0.59,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.88,
   "window_m": [
    1865.0,
    1890.0
   ],
   "width_at_max25_m": 4.62,
   "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": 83,
    "stations_resolved": 83,
    "width_median_m": 7.5,
    "width_p10_m": 2.3,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.651,
    "unbounded_share": 0.349,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.5,
    "window_m": [
     1865.0,
     1890.0
    ],
    "width_at_max25_m": 2.38,
    "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": "Porte des Pierres Dor\u00e9es",
  "county": "Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}