{
 "ocl_version": "0.1.0",
 "name": "Route de Champrond",
 "slug": "route-de-champrond",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.651397331251474,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 917.0,
   "end_distance_m": 919.0,
   "start_elevation_m": 490.37679790911176,
   "end_elevation_m": 491.2498258557368,
   "min_gradient_pct": -22.635229845252525,
   "suppressed_max_gradient_pct": 81.60435618956967,
   "suppressed_location_m": [
    908.0,
    910.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 40.52727697668009,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 242.0,
   "end_distance_m": 245.0,
   "start_elevation_m": 392.8113125175695,
   "end_elevation_m": 394.0271308268699,
   "min_gradient_pct": -22.339147250698943,
   "suppressed_max_gradient_pct": 64.39924756245053,
   "suppressed_location_m": [
    907.0,
    910.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 35.12504984187103,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 242.0,
   "end_distance_m": 247.0,
   "start_elevation_m": 392.8113125175695,
   "end_elevation_m": 394.56756500966304,
   "min_gradient_pct": -16.865373458927024,
   "suppressed_max_gradient_pct": 40.14920896851663,
   "suppressed_location_m": [
    907.0,
    912.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.69663610192913,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 242.0,
   "end_distance_m": 252.0,
   "start_elevation_m": 392.8113125175695,
   "end_elevation_m": 395.4809761277624,
   "min_gradient_pct": -9.1701635419696
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.112084426225067,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 242.0,
   "end_distance_m": 262.0,
   "start_elevation_m": 392.8113125175695,
   "end_elevation_m": 397.2337294028145,
   "min_gradient_pct": -1.6190339183552283,
   "suppressed_max_gradient_pct": 24.028597293194025,
   "suppressed_location_m": [
    683.0,
    703.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.45808134660524,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 241.0,
   "end_distance_m": 266.0,
   "start_elevation_m": 392.6241018769765,
   "end_elevation_m": 397.9886222136278,
   "min_gradient_pct": -0.7514843537339857,
   "suppressed_max_gradient_pct": 23.581497394065536,
   "suppressed_location_m": [
    678.0,
    703.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.198683062159944,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 241.0,
   "end_distance_m": 291.0,
   "start_elevation_m": 392.6241018769765,
   "end_elevation_m": 402.2234434080565,
   "min_gradient_pct": 2.7891571640607253,
   "suppressed_max_gradient_pct": 21.318036165682884,
   "suppressed_location_m": [
    675.0,
    725.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.0594990524163,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 221.0,
   "end_distance_m": 321.0,
   "start_elevation_m": 389.8923948396508,
   "end_elevation_m": 405.9518938920671,
   "min_gradient_pct": 6.994745633743207,
   "suppressed_max_gradient_pct": 18.220689677033874,
   "suppressed_location_m": [
    678.0,
    778.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.304,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 471.0,
  "shape_class": "sustained"
 },
 "length_m": 960.1847789389175,
 "start_elevation_m": 366.1325544043026,
 "end_elevation_m": 492.1500463245448,
 "endpoint_gain_m": 126.01749192024221,
 "overall_gradient_pct": 13.124295935986595,
 "accumulated_ascent_m": 129.3093604404334,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 35.12504984187103,
   "start_distance_m": 242.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 244.5,
   "start_elevation_m": 392.8113125175695,
   "end_elevation_m": 394.56756500966304,
   "start_xy": [
    913872.2702784906,
    6489750.264024984
   ],
   "end_xy": [
    913873.2290950539,
    6489755.171230991
   ]
  },
  "max_10m": {
   "gradient_pct": 26.69663610192913,
   "start_distance_m": 242.0,
   "end_distance_m": 252.0,
   "midpoint_distance_m": 247.0,
   "start_elevation_m": 392.8113125175695,
   "end_elevation_m": 395.4809761277624,
   "start_xy": [
    913872.2702784906,
    6489750.264024984
   ],
   "end_xy": [
    913874.3906287136,
    6489760.027347835
   ]
  },
  "max_20m": {
   "gradient_pct": 22.112084426225067,
   "start_distance_m": 242.0,
   "end_distance_m": 262.0,
   "midpoint_distance_m": 252.0,
   "start_elevation_m": 392.8113125175695,
   "end_elevation_m": 397.2337294028145,
   "start_xy": [
    913872.2702784906,
    6489750.264024984
   ],
   "end_xy": [
    913877.3535021655,
    6489769.578336312
   ]
  },
  "max_25m": {
   "gradient_pct": 21.45808134660524,
   "start_distance_m": 241.0,
   "end_distance_m": 266.0,
   "midpoint_distance_m": 253.5,
   "start_elevation_m": 392.6241018769765,
   "end_elevation_m": 397.9886222136278,
   "start_xy": [
    913872.078515178,
    6489749.282583782
   ],
   "end_xy": [
    913878.5386515462,
    6489773.398731704
   ]
  },
  "max_50m": {
   "gradient_pct": 19.198683062159944,
   "start_distance_m": 241.0,
   "end_distance_m": 291.0,
   "midpoint_distance_m": 266.0,
   "start_elevation_m": 392.6241018769765,
   "end_elevation_m": 402.2234434080565,
   "start_xy": [
    913872.078515178,
    6489749.282583782
   ],
   "end_xy": [
    913872.3203812075,
    6489793.3928509215
   ]
  },
  "max_100m": {
   "gradient_pct": 16.0594990524163,
   "start_distance_m": 221.0,
   "end_distance_m": 321.0,
   "midpoint_distance_m": 271.0,
   "start_elevation_m": 389.8923948396508,
   "end_elevation_m": 405.9518938920671,
   "start_xy": [
    913868.2432489248,
    6489729.653759753
   ],
   "end_xy": [
    913842.4503464301,
    6489791.18779271
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -16.865373458927024,
   "start_distance_m": 925.0,
   "end_distance_m": 930.0,
   "midpoint_distance_m": 927.5,
   "start_elevation_m": 491.4164789958155,
   "end_elevation_m": 490.57321032286916,
   "start_xy": [
    913911.0687092406,
    6490225.410037833
   ],
   "end_xy": [
    913913.5721477958,
    6490229.73817778
   ]
  },
  "min_10m": {
   "gradient_pct": -9.1701635419696,
   "start_distance_m": 921.0,
   "end_distance_m": 931.0,
   "midpoint_distance_m": 926.0,
   "start_elevation_m": 491.53560046283746,
   "end_elevation_m": 490.6185841086405,
   "start_xy": [
    913909.0659583964,
    6490221.947525876
   ],
   "end_xy": [
    913914.0728355068,
    6490230.603805769
   ]
  },
  "min_20m": {
   "gradient_pct": -1.6190339183552283,
   "start_distance_m": 921.0,
   "end_distance_m": 941.0,
   "midpoint_distance_m": 931.0,
   "start_elevation_m": 491.53560046283746,
   "end_elevation_m": 491.2117936791664,
   "start_xy": [
    913909.0659583964,
    6490221.947525876
   ],
   "end_xy": [
    913919.631356261,
    6490238.902564228
   ]
  },
  "min_25m": {
   "gradient_pct": -0.7514843537339857,
   "start_distance_m": 921.0,
   "end_distance_m": 946.0,
   "midpoint_distance_m": 933.5,
   "start_elevation_m": 491.53560046283746,
   "end_elevation_m": 491.34772937440397,
   "start_xy": [
    913909.0659583964,
    6490221.947525876
   ],
   "end_xy": [
    913922.5596265774,
    6490242.955369793
   ]
  },
  "min_50m": {
   "gradient_pct": 2.7891571640607253,
   "start_distance_m": 910.0,
   "end_distance_m": 960.0,
   "midpoint_distance_m": 935.0,
   "start_elevation_m": 490.75639860997325,
   "end_elevation_m": 492.1509771920036,
   "start_xy": [
    913903.5583935751,
    6490212.425617992
   ],
   "end_xy": [
    913930.7587834636,
    6490254.303225378
   ]
  },
  "min_100m": {
   "gradient_pct": 6.994745633743207,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 366.1325544043026,
   "end_elevation_m": 373.1273000380458,
   "start_xy": [
    913871.915,
    6489535.757
   ],
   "end_xy": [
    913859.5913769369,
    6489614.432007076
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.651397331251474,
   "start_distance_m": 917.0,
   "end_distance_m": 919.0,
   "midpoint_distance_m": 918.0,
   "start_elevation_m": 490.37679790911176,
   "end_elevation_m": 491.2498258557368,
   "start_xy": [
    913907.0632075523,
    6490218.485013918
   ],
   "end_xy": [
    913908.0645829744,
    6490220.216269897
   ]
  },
  "max_3m": {
   "gradient_pct": 40.52727697668009,
   "start_distance_m": 242.0,
   "end_distance_m": 245.0,
   "midpoint_distance_m": 243.5,
   "start_elevation_m": 392.8113125175695,
   "end_elevation_m": 394.0271308268699,
   "start_xy": [
    913872.2702784906,
    6489750.264024984
   ],
   "end_xy": [
    913872.8455684285,
    6489753.208348588
   ]
  }
 },
 "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": 0.035,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.125,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.135,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 5.0,
     "start_m": 698.0,
     "end_m": 703.0,
     "raw_pct": 35.34,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.536,
   "obstruction_max_height_m": 28.28,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    20.0
   ],
   [
    190.0,
    220.0
   ],
   [
    696.0,
    705.0
   ],
   [
    830.0,
    890.0
   ],
   [
    906.0,
    912.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "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_E913-N6489_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E913-N6490_0m5.tif"
  ],
  "calculated_at": "2026-09-17T04:06:21+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": [
   "E913-N6489",
   "E913-N6490"
  ],
  "elevation_blocks": [
   "21LHD6PL@2025-03-07"
  ],
  "ign_dalles": [
   "LHD_FXX_0913_6490_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0913_6491_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD6PL"
  ],
  "ign_editions": [
   "2025-03-07"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0913_6490_MNT_O_0M50_LAMB93_IGN69": "2025-03-07",
   "LHD_FXX_0913_6491_MNT_O_0M50_LAMB93_IGN69": "2025-03-07"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "structure_mask_ranges_m": [
   [
    0.0,
    15.0
   ]
  ],
  "carriageway": {
   "stations": 45,
   "stations_resolved": 45,
   "width_median_m": 4.75,
   "width_p10_m": 2.5,
   "width_min_m": 1.25,
   "width_max_m": 8.0,
   "bounded_share": 0.444,
   "unbounded_share": 0.556,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.12,
   "window_m": [
    241.0,
    266.0
   ],
   "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": 45,
    "stations_resolved": 45,
    "width_median_m": 3.0,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 10.5,
    "bounded_share": 0.889,
    "unbounded_share": 0.111,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     241.0,
     266.0
    ],
    "width_at_max25_m": 1.5,
    "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": "Saint-Franc",
  "county": "Savoie",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}