{
 "ocl_version": "0.1.0",
 "name": "Route d'Engl\u00e8ne",
 "slug": "route-d-englene",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 38.59108852049076,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 278.0,
   "end_distance_m": 280.0,
   "start_elevation_m": 800.4644543788945,
   "end_elevation_m": 801.2362761493043,
   "min_gradient_pct": -21.55081376095609
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.09494874139303,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 282.0,
   "end_distance_m": 285.0,
   "start_elevation_m": 801.3244674693399,
   "end_elevation_m": 802.1973159315817,
   "min_gradient_pct": -9.529601953556721
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.314994165457847,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 281.0,
   "end_distance_m": 286.0,
   "start_elevation_m": 801.1081241987036,
   "end_elevation_m": 802.3738739069765,
   "min_gradient_pct": 1.0194262657319086
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.122973522209577,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 278.0,
   "end_distance_m": 288.0,
   "start_elevation_m": 800.4644543788945,
   "end_elevation_m": 802.6767517311155,
   "min_gradient_pct": 1.1054554205804834
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.631056138640247,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 671.0,
   "end_distance_m": 691.0,
   "start_elevation_m": 860.3109606036527,
   "end_elevation_m": 864.4371718313807,
   "min_gradient_pct": 1.8030787092573064
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.025094046563936,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 666.0,
   "end_distance_m": 691.0,
   "start_elevation_m": 859.4308983197398,
   "end_elevation_m": 864.4371718313807,
   "min_gradient_pct": 2.350389458519203
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.982842465992917,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 642.0,
   "end_distance_m": 692.0,
   "start_elevation_m": 856.1357009176472,
   "end_elevation_m": 864.6271221506437,
   "min_gradient_pct": 5.191859491142168
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.16055286277617,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 592.0,
   "end_distance_m": 692.0,
   "start_elevation_m": 848.4665692878675,
   "end_elevation_m": 864.6271221506437,
   "min_gradient_pct": 9.048584136436034
  }
 ],
 "shape": {
  "ascent_concentration": 0.275,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 423.0,
  "shape_class": "sustained"
 },
 "length_m": 692.3276834237766,
 "start_elevation_m": 765.9895095146478,
 "end_elevation_m": 864.6851454784877,
 "endpoint_gain_m": 98.69563596383989,
 "overall_gradient_pct": 14.255624659663924,
 "accumulated_ascent_m": 99.54870537504826,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.314994165457847,
   "start_distance_m": 281.0,
   "end_distance_m": 286.0,
   "midpoint_distance_m": 283.5,
   "start_elevation_m": 801.1081241987036,
   "end_elevation_m": 802.3738739069765,
   "start_xy": [
    990865.5962780471,
    6556464.512552088
   ],
   "end_xy": [
    990863.7473934218,
    6556459.866949259
   ]
  },
  "max_10m": {
   "gradient_pct": 22.122973522209577,
   "start_distance_m": 278.0,
   "end_distance_m": 288.0,
   "midpoint_distance_m": 283.0,
   "start_elevation_m": 800.4644543788945,
   "end_elevation_m": 802.6767517311155,
   "start_xy": [
    990866.5498834623,
    6556467.344893832
   ],
   "end_xy": [
    990863.0078395718,
    6556458.008708128
   ]
  },
  "max_20m": {
   "gradient_pct": 20.631056138640247,
   "start_distance_m": 671.0,
   "end_distance_m": 691.0,
   "midpoint_distance_m": 681.0,
   "start_elevation_m": 860.3109606036527,
   "end_elevation_m": 864.4371718313807,
   "start_xy": [
    990771.3655553001,
    6556092.905607292
   ],
   "end_xy": [
    990759.7578420718,
    6556076.969383986
   ]
  },
  "max_25m": {
   "gradient_pct": 20.025094046563936,
   "start_distance_m": 666.0,
   "end_distance_m": 691.0,
   "midpoint_distance_m": 678.5,
   "start_elevation_m": 859.4308983197398,
   "end_elevation_m": 864.4371718313807,
   "start_xy": [
    990772.7761351704,
    6556097.70184485
   ],
   "end_xy": [
    990759.7578420718,
    6556076.969383986
   ]
  },
  "max_50m": {
   "gradient_pct": 16.982842465992917,
   "start_distance_m": 642.0,
   "end_distance_m": 692.0,
   "midpoint_distance_m": 667.0,
   "start_elevation_m": 856.1357009176472,
   "end_elevation_m": 864.6271221506437,
   "start_xy": [
    990780.8613589451,
    6556120.254529909
   ],
   "end_xy": [
    990759.0785822003,
    6556076.235486154
   ]
  },
  "max_100m": {
   "gradient_pct": 16.16055286277617,
   "start_distance_m": 592.0,
   "end_distance_m": 692.0,
   "midpoint_distance_m": 642.0,
   "start_elevation_m": 848.4665692878675,
   "end_elevation_m": 864.6271221506437,
   "start_xy": [
    990782.8957981956,
    6556169.586113173
   ],
   "end_xy": [
    990759.0785822003,
    6556076.235486154
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.0194262657319086,
   "start_distance_m": 1.0,
   "end_distance_m": 6.0,
   "midpoint_distance_m": 3.5,
   "start_elevation_m": 765.9960713840478,
   "end_elevation_m": 766.0470426973344,
   "start_xy": [
    990938.8008702194,
    6556710.612634634
   ],
   "end_xy": [
    990933.8724320629,
    6556711.407251214
   ]
  },
  "min_10m": {
   "gradient_pct": 1.1054554205804834,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 765.9895095146478,
   "end_elevation_m": 766.1000550567059,
   "start_xy": [
    990939.776,
    6556710.391
   ],
   "end_xy": [
    990929.8815861712,
    6556711.562794516
   ]
  },
  "min_20m": {
   "gradient_pct": 1.8030787092573064,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 765.9895095146478,
   "end_elevation_m": 766.3501252564993,
   "start_xy": [
    990939.776,
    6556710.391
   ],
   "end_xy": [
    990920.0507091237,
    6556710.088308532
   ]
  },
  "min_25m": {
   "gradient_pct": 2.350389458519203,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 765.9895095146478,
   "end_elevation_m": 766.5771068792776,
   "start_xy": [
    990939.776,
    6556710.391
   ],
   "end_xy": [
    990915.365691728,
    6556708.388157673
   ]
  },
  "min_50m": {
   "gradient_pct": 5.191859491142168,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 765.9895095146478,
   "end_elevation_m": 768.5854392602189,
   "start_xy": [
    990939.776,
    6556710.391
   ],
   "end_xy": [
    990899.805919529,
    6556690.008242645
   ]
  },
  "min_100m": {
   "gradient_pct": 9.048584136436034,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 765.9895095146478,
   "end_elevation_m": 775.0380936510838,
   "start_xy": [
    990939.776,
    6556710.391
   ],
   "end_xy": [
    990889.5186682685,
    6556641.077963825
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 38.59108852049076,
   "start_distance_m": 278.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 279.0,
   "start_elevation_m": 800.4644543788945,
   "end_elevation_m": 801.2362761493043,
   "start_xy": [
    990866.5498834623,
    6556467.344893832
   ],
   "end_xy": [
    990865.9660549721,
    6556465.441672654
   ]
  },
  "max_3m": {
   "gradient_pct": 29.09494874139303,
   "start_distance_m": 282.0,
   "end_distance_m": 285.0,
   "midpoint_distance_m": 283.5,
   "start_elevation_m": 801.3244674693399,
   "end_elevation_m": 802.1973159315817,
   "start_xy": [
    990865.226501122,
    6556463.583431522
   ],
   "end_xy": [
    990864.1171703469,
    6556460.796069825
   ]
  }
 },
 "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": 0.212,
   "obstruction_max_height_m": 27.98,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25
   ]
  },
  "review": [],
  "extent": [
   "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_E990-N6556_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:44:22+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps4",
  "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": [
   "E990-N6556"
  ],
  "elevation_blocks": [
   "21LHD5QK2@2025-06-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0990_6557_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD5QK2"
  ],
  "ign_editions": [
   "2025-06-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0990_6557_MNT_O_0M50_LAMB93_IGN69": "2025-06-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 34,
   "stations_resolved": 34,
   "width_median_m": 3.75,
   "width_p10_m": 2.5,
   "width_min_m": 1.0,
   "width_max_m": 9.75,
   "bounded_share": 0.647,
   "unbounded_share": 0.353,
   "confidence_median": 0.586,
   "width_median_bounded_m": 3.75,
   "window_m": [
    666.0,
    691.0
   ],
   "width_at_max25_m": 3.0,
   "window_stations": 7,
   "single_track": true,
   "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": 34,
    "stations_resolved": 34,
    "width_median_m": 4.62,
    "width_p10_m": 1.58,
    "width_min_m": 1.0,
    "width_max_m": 11.25,
    "bounded_share": 0.912,
    "unbounded_share": 0.088,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.5,
    "window_m": [
     666.0,
     691.0
    ],
    "width_at_max25_m": 2.5,
    "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": "Sixt-Fer-\u00e0-Cheval",
  "county": "Haute-Savoie",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}