{
 "ocl_version": "0.1.0",
 "name": "Chemin des Mousses",
 "slug": "chemin-des-mousses",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 36.5544106226281,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 318.0,
   "end_distance_m": 320.0,
   "start_elevation_m": 468.8502194452145,
   "end_elevation_m": 469.5813076576671,
   "min_gradient_pct": 0.8731804618918204
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 30.648577992858844,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 317.0,
   "end_distance_m": 320.0,
   "start_elevation_m": 468.6618503178813,
   "end_elevation_m": 469.5813076576671,
   "min_gradient_pct": 2.4607354725674213
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.544970616492947,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 315.0,
   "end_distance_m": 320.0,
   "start_elevation_m": 468.25405912684244,
   "end_elevation_m": 469.5813076576671,
   "min_gradient_pct": 4.353672147061616
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.936000336217717,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 310.0,
   "end_distance_m": 320.0,
   "start_elevation_m": 467.2877076240453,
   "end_elevation_m": 469.5813076576671,
   "min_gradient_pct": 8.614875407261593
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.23602359272519,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 201.0,
   "end_distance_m": 221.0,
   "start_elevation_m": 447.0528609082786,
   "end_elevation_m": 451.50006562682364,
   "min_gradient_pct": 10.86930877230202
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.001308008005708,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 208.0,
   "end_distance_m": 233.0,
   "start_elevation_m": 448.5801608240045,
   "end_elevation_m": 454.08048782600594,
   "min_gradient_pct": 11.443167749995837
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.319000840669105,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 187.0,
   "end_distance_m": 237.0,
   "start_elevation_m": 444.58295279124457,
   "end_elevation_m": 454.7424532115791,
   "min_gradient_pct": 11.989718567951968
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.516888046853524,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 201.0,
   "end_distance_m": 301.0,
   "start_elevation_m": 447.0528609082786,
   "end_elevation_m": 465.5697489551321,
   "min_gradient_pct": 12.679088149603217
  }
 ],
 "shape": {
  "ascent_concentration": 0.298,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 332.0,
  "shape_class": "sustained"
 },
 "length_m": 334.46355082372764,
 "start_elevation_m": 419.30861157031256,
 "end_elevation_m": 472.1406434548878,
 "endpoint_gain_m": 52.83203188457526,
 "overall_gradient_pct": 15.796050647210683,
 "accumulated_ascent_m": 52.83203188457526,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.544970616492947,
   "start_distance_m": 315.0,
   "end_distance_m": 320.0,
   "midpoint_distance_m": 317.5,
   "start_elevation_m": 468.25405912684244,
   "end_elevation_m": 469.5813076576671,
   "start_xy": [
    907329.1276650965,
    6444836.503253868
   ],
   "end_xy": [
    907325.1749780365,
    6444839.565322613
   ]
  },
  "max_10m": {
   "gradient_pct": 22.936000336217717,
   "start_distance_m": 310.0,
   "end_distance_m": 320.0,
   "midpoint_distance_m": 315.0,
   "start_elevation_m": 467.2877076240453,
   "end_elevation_m": 469.5813076576671,
   "start_xy": [
    907333.0803521567,
    6444833.441185121
   ],
   "end_xy": [
    907325.1749780365,
    6444839.565322613
   ]
  },
  "max_20m": {
   "gradient_pct": 22.23602359272519,
   "start_distance_m": 201.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 211.0,
   "start_elevation_m": 447.0528609082786,
   "end_elevation_m": 451.50006562682364,
   "start_xy": [
    907363.5589725088,
    6444732.9784167865
   ],
   "end_xy": [
    907361.7481790626,
    6444752.890441391
   ]
  },
  "max_25m": {
   "gradient_pct": 22.001308008005708,
   "start_distance_m": 208.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 220.5,
   "start_elevation_m": 448.5801608240045,
   "end_elevation_m": 454.08048782600594,
   "start_xy": [
    907362.8092941879,
    6444739.938156897
   ],
   "end_xy": [
    907361.0798220225,
    6444764.871814387
   ]
  },
  "max_50m": {
   "gradient_pct": 20.319000840669105,
   "start_distance_m": 187.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 212.0,
   "start_elevation_m": 444.58295279124457,
   "end_elevation_m": 454.7424532115791,
   "start_xy": [
    907365.0583291507,
    6444719.058936563
   ],
   "end_xy": [
    907360.8570363424,
    6444768.865605385
   ]
  },
  "max_100m": {
   "gradient_pct": 18.516888046853524,
   "start_distance_m": 201.0,
   "end_distance_m": 301.0,
   "midpoint_distance_m": 251.0,
   "start_elevation_m": 447.0528609082786,
   "end_elevation_m": 465.5697489551321,
   "start_xy": [
    907363.5589725088,
    6444732.9784167865
   ],
   "end_xy": [
    907339.9298737986,
    6444827.689451268
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 4.353672147061616,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 419.30861157031256,
   "end_elevation_m": 419.52629517766565,
   "start_xy": [
    907527.838,
    6444633.846
   ],
   "end_xy": [
    907524.1004869749,
    6444637.152380614
   ]
  },
  "min_10m": {
   "gradient_pct": 8.614875407261593,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 419.30861157031256,
   "end_elevation_m": 420.1700991110387,
   "start_xy": [
    907527.838,
    6444633.846
   ],
   "end_xy": [
    907520.0403242591,
    6444640.070441394
   ]
  },
  "min_20m": {
   "gradient_pct": 10.86930877230202,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 419.30861157031256,
   "end_elevation_m": 421.48247332477297,
   "start_xy": [
    907527.838,
    6444633.846
   ],
   "end_xy": [
    907511.8011538859,
    6444645.7299871305
   ]
  },
  "min_25m": {
   "gradient_pct": 11.443167749995837,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 419.30861157031256,
   "end_elevation_m": 422.1694035078115,
   "start_xy": [
    907527.838,
    6444633.846
   ],
   "end_xy": [
    907507.5692724513,
    6444648.392914002
   ]
  },
  "min_50m": {
   "gradient_pct": 11.989718567951968,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 419.30861157031256,
   "end_elevation_m": 425.30347085428855,
   "start_xy": [
    907527.838,
    6444633.846
   ],
   "end_xy": [
    907486.0254531631,
    6444660.954099567
   ]
  },
  "min_100m": {
   "gradient_pct": 12.679088149603217,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 419.30861157031256,
   "end_elevation_m": 431.9876997199158,
   "start_xy": [
    907527.838,
    6444633.846
   ],
   "end_xy": [
    907438.4958558762,
    6444675.969432004
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 36.5544106226281,
   "start_distance_m": 318.0,
   "end_distance_m": 320.0,
   "midpoint_distance_m": 319.0,
   "start_elevation_m": 468.8502194452145,
   "end_elevation_m": 469.5813076576671,
   "start_xy": [
    907326.7560528606,
    6444838.340495115
   ],
   "end_xy": [
    907325.1749780365,
    6444839.565322613
   ]
  },
  "max_3m": {
   "gradient_pct": 30.648577992858844,
   "start_distance_m": 317.0,
   "end_distance_m": 320.0,
   "midpoint_distance_m": 318.5,
   "start_elevation_m": 468.6618503178813,
   "end_elevation_m": 469.5813076576671,
   "start_xy": [
    907327.5465902726,
    6444837.728081366
   ],
   "end_xy": [
    907325.1749780365,
    6444839.565322613
   ]
  }
 },
 "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": 0.774,
   "obstruction_max_height_m": 25.37,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "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_E907-N6444_0m5.tif"
  ],
  "calculated_at": "2026-09-17T04:02:26+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": [
   "E907-N6444"
  ],
  "elevation_blocks": [
   "21LHD6PM@2025-03-25"
  ],
  "ign_dalles": [
   "LHD_FXX_0907_6445_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD6PM"
  ],
  "ign_editions": [
   "2025-03-25"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0907_6445_MNT_O_0M50_LAMB93_IGN69": "2025-03-25"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 20,
   "stations_resolved": 20,
   "width_median_m": 5.38,
   "width_p10_m": 2.48,
   "width_min_m": 2.25,
   "width_max_m": 12.0,
   "bounded_share": 0.05,
   "unbounded_share": 0.95,
   "confidence_median": 0.0,
   "width_median_bounded_m": 6.25,
   "window_m": [
    208.0,
    233.0
   ],
   "width_at_max25_m": 5.5,
   "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": 20,
    "stations_resolved": 20,
    "width_median_m": 2.38,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.9,
    "unbounded_share": 0.1,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.12,
    "window_m": [
     208.0,
     233.0
    ],
    "width_at_max25_m": 2.0,
    "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": "Saint-Paul-de-Varces",
  "county": "Is\u00e8re",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}