{
 "ocl_version": "0.1.0",
 "name": "Chemin Bellevue",
 "slug": "chemin-bellevue-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.72265996005376,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "no_bench_excluded_min"
   ],
   "start_distance_m": 819.0,
   "end_distance_m": 821.0,
   "start_elevation_m": 379.62156678332997,
   "end_elevation_m": 380.11601998253104,
   "min_gradient_pct": -1.2258148938798286,
   "suppressed_max_gradient_pct": 38.507871155206885,
   "suppressed_location_m": [
    148.0,
    150.0
   ],
   "suppressed_min_gradient_pct": -39.6506294531207,
   "suppressed_min_location_m": [
    167.0,
    169.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.025083843682143,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "no_bench_excluded_min"
   ],
   "start_distance_m": 819.0,
   "end_distance_m": 822.0,
   "start_elevation_m": 379.62156678332997,
   "end_elevation_m": 380.31231929864043,
   "min_gradient_pct": -0.20925811800035868,
   "suppressed_max_gradient_pct": 34.02775036747698,
   "suppressed_location_m": [
    148.0,
    151.0
   ],
   "suppressed_min_gradient_pct": -29.140328360265737,
   "suppressed_min_location_m": [
    167.0,
    170.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.705555387925642,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "no_bench_excluded_min"
   ],
   "start_distance_m": 819.0,
   "end_distance_m": 824.0,
   "start_elevation_m": 379.62156678332997,
   "end_elevation_m": 380.75684455272625,
   "min_gradient_pct": 0.23078449503373122,
   "suppressed_max_gradient_pct": 24.99859325041939,
   "suppressed_location_m": [
    148.0,
    153.0
   ],
   "suppressed_min_gradient_pct": -19.96239648985579,
   "suppressed_min_location_m": [
    165.0,
    170.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.989772103415817,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded_min"
   ],
   "start_distance_m": 815.0,
   "end_distance_m": 825.0,
   "start_elevation_m": 378.7715445763952,
   "end_elevation_m": 380.97052178673675,
   "min_gradient_pct": 0.3955867278102687,
   "suppressed_min_gradient_pct": -8.015530087061506,
   "suppressed_min_location_m": [
    162.0,
    172.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.673722594025037,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded_min"
   ],
   "start_distance_m": 811.0,
   "end_distance_m": 831.0,
   "start_elevation_m": 378.00322921856826,
   "end_elevation_m": 382.1379737373733,
   "min_gradient_pct": 1.9529139675768192,
   "suppressed_min_gradient_pct": -1.0959161966758302,
   "suppressed_min_location_m": [
    156.0,
    176.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.364479399992433,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded_min"
   ],
   "start_distance_m": 806.0,
   "end_distance_m": 831.0,
   "start_elevation_m": 377.04685388737516,
   "end_elevation_m": 382.1379737373733,
   "min_gradient_pct": 2.669827288698798,
   "suppressed_min_gradient_pct": 0.300434745244047,
   "suppressed_min_location_m": [
    163.0,
    188.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.51287112343755,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded_min"
   ],
   "start_distance_m": 781.0,
   "end_distance_m": 831.0,
   "start_elevation_m": 372.3815381756545,
   "end_elevation_m": 382.1379737373733,
   "min_gradient_pct": 3.3129255881866584,
   "suppressed_min_gradient_pct": 3.06481599542019,
   "suppressed_min_location_m": [
    156.0,
    206.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.514076596003576,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 738.0,
   "end_distance_m": 838.0,
   "start_elevation_m": 366.5913601526043,
   "end_elevation_m": 383.1054367486079,
   "min_gradient_pct": 3.9182052801181726
  }
 ],
 "shape": {
  "ascent_concentration": 0.444,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 81.0,
  "shape_class": "sustained"
 },
 "length_m": 1014.0481513773013,
 "start_elevation_m": 327.8506508935262,
 "end_elevation_m": 401.87923306934863,
 "endpoint_gain_m": 74.02858217582241,
 "overall_gradient_pct": 7.300302463475255,
 "accumulated_ascent_m": 75.18324298161161,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.705555387925642,
   "start_distance_m": 819.0,
   "end_distance_m": 824.0,
   "midpoint_distance_m": 821.5,
   "start_elevation_m": 379.62156678332997,
   "end_elevation_m": 380.75684455272625,
   "start_xy": [
    397683.4138878286,
    6228713.367068522
   ],
   "end_xy": [
    397688.11719970475,
    6228711.670348923
   ]
  },
  "max_10m": {
   "gradient_pct": 21.989772103415817,
   "start_distance_m": 815.0,
   "end_distance_m": 825.0,
   "midpoint_distance_m": 820.0,
   "start_elevation_m": 378.7715445763952,
   "end_elevation_m": 380.97052178673675,
   "start_xy": [
    397680.63065663615,
    6228715.911035177
   ],
   "end_xy": [
    397689.05786207994,
    6228711.331005003
   ]
  },
  "max_20m": {
   "gradient_pct": 20.673722594025037,
   "start_distance_m": 811.0,
   "end_distance_m": 831.0,
   "midpoint_distance_m": 821.0,
   "start_elevation_m": 378.00322921856826,
   "end_elevation_m": 382.1379737373733,
   "start_xy": [
    397678.5846428741,
    6228719.348160094
   ],
   "end_xy": [
    397695.05488371674,
    6228711.321613415
   ]
  },
  "max_25m": {
   "gradient_pct": 20.364479399992433,
   "start_distance_m": 806.0,
   "end_distance_m": 831.0,
   "midpoint_distance_m": 818.5,
   "start_elevation_m": 377.04685388737516,
   "end_elevation_m": 382.1379737373733,
   "start_xy": [
    397677.5944053055,
    6228724.187081095
   ],
   "end_xy": [
    397695.05488371674,
    6228711.321613415
   ]
  },
  "max_50m": {
   "gradient_pct": 19.51287112343755,
   "start_distance_m": 781.0,
   "end_distance_m": 831.0,
   "midpoint_distance_m": 806.0,
   "start_elevation_m": 372.3815381756545,
   "end_elevation_m": 382.1379737373733,
   "start_xy": [
    397668.7085466167,
    6228745.425888407
   ],
   "end_xy": [
    397695.05488371674,
    6228711.321613415
   ]
  },
  "max_100m": {
   "gradient_pct": 16.514076596003576,
   "start_distance_m": 738.0,
   "end_distance_m": 838.0,
   "midpoint_distance_m": 788.0,
   "start_elevation_m": 366.5913601526043,
   "end_elevation_m": 383.1054367486079,
   "start_xy": [
    397645.0246153307,
    6228717.154048554
   ],
   "end_xy": [
    397701.31602614524,
    6228713.977670898
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.23078449503373122,
   "start_distance_m": 953.0,
   "end_distance_m": 958.0,
   "midpoint_distance_m": 955.5,
   "start_elevation_m": 397.088168598611,
   "end_elevation_m": 397.0997078233627,
   "start_xy": [
    397759.55583799747,
    6228684.333104121
   ],
   "end_xy": [
    397755.56769941334,
    6228681.317353695
   ]
  },
  "min_10m": {
   "gradient_pct": 0.3955867278102687,
   "start_distance_m": 947.0,
   "end_distance_m": 957.0,
   "midpoint_distance_m": 952.0,
   "start_elevation_m": 397.04969115866714,
   "end_elevation_m": 397.08924983144817,
   "start_xy": [
    397763.4484566205,
    6228688.782018153
   ],
   "end_xy": [
    397756.36532713013,
    6228681.920503779
   ]
  },
  "min_20m": {
   "gradient_pct": 1.9529139675768192,
   "start_distance_m": 943.0,
   "end_distance_m": 963.0,
   "midpoint_distance_m": 953.0,
   "start_elevation_m": 396.9190892056062,
   "end_elevation_m": 397.3096719991216,
   "start_xy": [
    397765.6211102949,
    6228692.140526157
   ],
   "end_xy": [
    397754.151508188,
    6228676.675336823
   ]
  },
  "min_25m": {
   "gradient_pct": 2.669827288698798,
   "start_distance_m": 943.0,
   "end_distance_m": 968.0,
   "midpoint_distance_m": 955.5,
   "start_elevation_m": 396.9190892056062,
   "end_elevation_m": 397.5865460277809,
   "start_xy": [
    397765.6211102949,
    6228692.140526157
   ],
   "end_xy": [
    397753.1369783531,
    6228671.779345686
   ]
  },
  "min_50m": {
   "gradient_pct": 3.3129255881866584,
   "start_distance_m": 2.0,
   "end_distance_m": 52.0,
   "midpoint_distance_m": 27.0,
   "start_elevation_m": 327.92247205799947,
   "end_elevation_m": 329.5789348520928,
   "start_xy": [
    397539.01301762485,
    6228852.542510348
   ],
   "end_xy": [
    397583.2199585633,
    6228874.822731275
   ]
  },
  "min_100m": {
   "gradient_pct": 3.9182052801181726,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 327.8506508935262,
   "end_elevation_m": 331.7688561736444,
   "start_xy": [
    397537.026,
    6228852.315
   ],
   "end_xy": [
    397621.6398942652,
    6228903.595979035
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.72265996005376,
   "start_distance_m": 819.0,
   "end_distance_m": 821.0,
   "midpoint_distance_m": 820.0,
   "start_elevation_m": 379.62156678332997,
   "end_elevation_m": 380.11601998253104,
   "start_xy": [
    397683.4138878286,
    6228713.367068522
   ],
   "end_xy": [
    397685.295212579,
    6228712.688380682
   ]
  },
  "max_3m": {
   "gradient_pct": 23.025083843682143,
   "start_distance_m": 819.0,
   "end_distance_m": 822.0,
   "midpoint_distance_m": 820.5,
   "start_elevation_m": 379.62156678332997,
   "end_elevation_m": 380.31231929864043,
   "start_xy": [
    397683.4138878286,
    6228713.367068522
   ],
   "end_xy": [
    397686.23587495426,
    6228712.3490367625
   ]
  }
 },
 "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": 0.031,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.218,
   "obstruction_max_height_m": 24.06,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    140.0,
    170.0
   ]
  ],
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "06fa4c370391597f015858e97dcf01ca2f5b3640",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:0048c2bbb24ab95e",
   "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-pyr1",
   "road_pbf": "block-batch-fr-pyr1.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:c54ac68b3f57b41b"
  },
  "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_E397-N6228_0m5@21LHD1FR-2025-03-21.tif"
  ],
  "calculated_at": "2026-09-20T06:02:01+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pyr1",
  "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": [
   "E397-N6228"
  ],
  "elevation_blocks": [
   "21LHD1FR@2025-03-21"
  ],
  "ign_dalles": [
   "LHD_FXX_0397_6229_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1FR"
  ],
  "ign_editions": [
   "2025-03-21"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0397_6229_MNT_O_0M50_LAMB93_IGN69": "2025-03-21"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 47,
   "stations_resolved": 47,
   "width_median_m": 6.75,
   "width_p10_m": 4.4,
   "width_min_m": 3.0,
   "width_max_m": 12.0,
   "bounded_share": 0.128,
   "unbounded_share": 0.872,
   "confidence_median": 0.0,
   "width_median_bounded_m": 7.0,
   "window_m": [
    806.0,
    831.0
   ],
   "width_at_max25_m": 5.75,
   "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": 47,
    "stations_resolved": 47,
    "width_median_m": 6.5,
    "width_p10_m": 1.15,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.681,
    "unbounded_share": 0.319,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.12,
    "window_m": [
     806.0,
     831.0
    ],
    "width_at_max25_m": 5.5,
    "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": "Arette",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}