{
 "ocl_version": "0.1.0",
 "name": "Mont\u00e9e de Belledent",
 "slug": "montee-de-belledent",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 37.45102214461156,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 143.0,
   "end_distance_m": 145.0,
   "start_elevation_m": 330.46785525880307,
   "end_elevation_m": 331.2168757016953,
   "min_gradient_pct": -6.407370003353208
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 35.35153708313411,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 143.0,
   "end_distance_m": 146.0,
   "start_elevation_m": 330.46785525880307,
   "end_elevation_m": 331.5284013712971,
   "min_gradient_pct": -5.1210549534459915
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.00838677323918,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 143.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 330.46785525880307,
   "end_elevation_m": 332.16827459746503,
   "min_gradient_pct": -3.6381272819176047
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 33.59368912641287,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 143.0,
   "end_distance_m": 153.0,
   "start_elevation_m": 330.46785525880307,
   "end_elevation_m": 333.82722417144436,
   "min_gradient_pct": -1.9281196826921132
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 30.74051212247042,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 136.0,
   "end_distance_m": 156.0,
   "start_elevation_m": 328.47353714859435,
   "end_elevation_m": 334.62163957308843,
   "min_gradient_pct": -0.7955697431179942
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 29.566361814502216,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 136.0,
   "end_distance_m": 161.0,
   "start_elevation_m": 328.47353714859435,
   "end_elevation_m": 335.8651276022199,
   "min_gradient_pct": -0.5736777089798579
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 26.33352386083402,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 136.0,
   "end_distance_m": 186.0,
   "start_elevation_m": 328.47353714859435,
   "end_elevation_m": 341.64029907901136,
   "min_gradient_pct": -0.24421940488252858
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 23.651604882664916,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 122.0,
   "end_distance_m": 222.0,
   "start_elevation_m": 325.56273863184725,
   "end_elevation_m": 349.21434351451217,
   "min_gradient_pct": 0.0366807185464495
  }
 ],
 "shape": {
  "ascent_concentration": 0.628,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 111.0,
  "shape_class": "stepped"
 },
 "length_m": 260.321006254979,
 "start_elevation_m": 324.3795051481991,
 "end_elevation_m": 350.6740571853141,
 "endpoint_gain_m": 26.29455203711501,
 "overall_gradient_pct": 10.10081837627811,
 "accumulated_ascent_m": 26.92902724051146,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.00838677323918,
   "start_distance_m": 143.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 145.5,
   "start_elevation_m": 330.46785525880307,
   "end_elevation_m": 332.16827459746503,
   "start_xy": [
    909278.5776330363,
    6442120.590197971
   ],
   "end_xy": [
    909273.6310010828,
    6442119.948083357
   ]
  },
  "max_10m": {
   "gradient_pct": 33.59368912641287,
   "start_distance_m": 143.0,
   "end_distance_m": 153.0,
   "midpoint_distance_m": 148.0,
   "start_elevation_m": 330.46785525880307,
   "end_elevation_m": 333.82722417144436,
   "start_xy": [
    909278.5776330363,
    6442120.590197971
   ],
   "end_xy": [
    909268.7297117364,
    6442118.959466777
   ]
  },
  "max_20m": {
   "gradient_pct": 30.74051212247042,
   "start_distance_m": 136.0,
   "end_distance_m": 156.0,
   "midpoint_distance_m": 146.0,
   "start_elevation_m": 328.47353714859435,
   "end_elevation_m": 334.62163957308843,
   "start_xy": [
    909285.5645269036,
    6442121.018349915
   ],
   "end_xy": [
    909265.817991667,
    6442118.276628295
   ]
  },
  "max_25m": {
   "gradient_pct": 29.566361814502216,
   "start_distance_m": 136.0,
   "end_distance_m": 161.0,
   "midpoint_distance_m": 148.5,
   "start_elevation_m": 328.47353714859435,
   "end_elevation_m": 335.8651276022199,
   "start_xy": [
    909285.5645269036,
    6442121.018349915
   ],
   "end_xy": [
    909261.2682530544,
    6442116.203013442
   ]
  },
  "max_50m": {
   "gradient_pct": 26.33352386083402,
   "start_distance_m": 136.0,
   "end_distance_m": 186.0,
   "midpoint_distance_m": 161.0,
   "start_elevation_m": 328.47353714859435,
   "end_elevation_m": 341.64029907901136,
   "start_xy": [
    909285.5645269036,
    6442121.018349915
   ],
   "end_xy": [
    909249.8223720959,
    6442094.435555702
   ]
  },
  "max_100m": {
   "gradient_pct": 23.651604882664916,
   "start_distance_m": 122.0,
   "end_distance_m": 222.0,
   "midpoint_distance_m": 172.0,
   "start_elevation_m": 325.56273863184725,
   "end_elevation_m": 349.21434351451217,
   "start_xy": [
    909299.5383146382,
    6442121.874653802
   ],
   "end_xy": [
    909234.1657696596,
    6442062.0737687955
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.6381272819176047,
   "start_distance_m": 5.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 7.5,
   "start_elevation_m": 324.4194805355535,
   "end_elevation_m": 324.2375741714576,
   "start_xy": [
    909414.7265337927,
    6442102.155977508
   ],
   "end_xy": [
    909409.8160675854,
    6442103.097955017
   ]
  },
  "min_10m": {
   "gradient_pct": -1.9281196826921132,
   "start_distance_m": 4.0,
   "end_distance_m": 14.0,
   "midpoint_distance_m": 9.0,
   "start_elevation_m": 324.4449647840898,
   "end_elevation_m": 324.2521528158206,
   "start_xy": [
    909415.7086270341,
    6442101.967582007
   ],
   "end_xy": [
    909405.8876946195,
    6442103.851537024
   ]
  },
  "min_20m": {
   "gradient_pct": -0.7955697431179942,
   "start_distance_m": 4.0,
   "end_distance_m": 24.0,
   "midpoint_distance_m": 14.0,
   "start_elevation_m": 324.4449647840898,
   "end_elevation_m": 324.2858508354662,
   "start_xy": [
    909415.7086270341,
    6442101.967582007
   ],
   "end_xy": [
    909396.0667622049,
    6442105.735492041
   ]
  },
  "min_25m": {
   "gradient_pct": -0.5736777089798579,
   "start_distance_m": 4.0,
   "end_distance_m": 29.0,
   "midpoint_distance_m": 16.5,
   "start_elevation_m": 324.4449647840898,
   "end_elevation_m": 324.3015453568448,
   "start_xy": [
    909415.7086270341,
    6442101.967582007
   ],
   "end_xy": [
    909391.1562959976,
    6442106.67746955
   ]
  },
  "min_50m": {
   "gradient_pct": -0.24421940488252858,
   "start_distance_m": 4.0,
   "end_distance_m": 54.0,
   "midpoint_distance_m": 29.0,
   "start_elevation_m": 324.4449647840898,
   "end_elevation_m": 324.3228550816485,
   "start_xy": [
    909415.7086270341,
    6442101.967582007
   ],
   "end_xy": [
    909366.603964961,
    6442111.387357093
   ]
  },
  "min_100m": {
   "gradient_pct": 0.0366807185464495,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 324.3795051481991,
   "end_elevation_m": 324.41618586674554,
   "start_xy": [
    909419.637,
    6442101.214
   ],
   "end_xy": [
    909321.1586389206,
    6442117.984426627
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 37.45102214461156,
   "start_distance_m": 143.0,
   "end_distance_m": 145.0,
   "midpoint_distance_m": 144.0,
   "start_elevation_m": 330.46785525880307,
   "end_elevation_m": 331.2168757016953,
   "start_xy": [
    909278.5776330363,
    6442120.590197971
   ],
   "end_xy": [
    909276.5813776456,
    6442120.467868845
   ]
  },
  "max_3m": {
   "gradient_pct": 35.35153708313411,
   "start_distance_m": 143.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 144.5,
   "start_elevation_m": 330.46785525880307,
   "end_elevation_m": 331.5284013712971,
   "start_xy": [
    909278.5776330363,
    6442120.590197971
   ],
   "end_xy": [
    909275.5915168214,
    6442120.343529989
   ]
  }
 },
 "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": 0.073,
   "obstruction_max_height_m": 10.73,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "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_E909-N6442_0m5.tif"
  ],
  "calculated_at": "2026-09-17T03:37:33+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps2",
  "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": [
   "E909-N6442"
  ],
  "elevation_blocks": [
   "21LHD6PM@2025-03-25"
  ],
  "ign_dalles": [
   "LHD_FXX_0909_6443_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD6PM"
  ],
  "ign_editions": [
   "2025-03-25"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0909_6443_MNT_O_0M50_LAMB93_IGN69": "2025-03-25"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 17,
   "stations_resolved": 17,
   "width_median_m": 5.0,
   "width_p10_m": 2.95,
   "width_min_m": 2.5,
   "width_max_m": 12.0,
   "bounded_share": 0.235,
   "unbounded_share": 0.765,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.5,
   "window_m": [
    136.0,
    161.0
   ],
   "width_at_max25_m": 4.25,
   "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": 17,
    "stations_resolved": 17,
    "width_median_m": 5.5,
    "width_p10_m": 2.3,
    "width_min_m": 1.5,
    "width_max_m": 9.5,
    "bounded_share": 0.647,
    "unbounded_share": 0.353,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.75,
    "window_m": [
     136.0,
     161.0
    ],
    "width_at_max25_m": 4.5,
    "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": "Vif",
  "county": "Is\u00e8re",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}