{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (44.1863, 6.7468)",
 "slug": "discovered-lane-44-1863-6-7468",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 40.98407034657612,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 209.0,
   "end_distance_m": 211.0,
   "start_elevation_m": 1285.8262588674527,
   "end_elevation_m": 1286.6459402743842,
   "min_gradient_pct": 0.4605410363296869,
   "suppressed_max_gradient_pct": 51.95315604287316,
   "suppressed_location_m": [
    72.0,
    74.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.34220928554623,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 208.0,
   "end_distance_m": 211.0,
   "start_elevation_m": 1285.6156739958178,
   "end_elevation_m": 1286.6459402743842,
   "min_gradient_pct": 0.28659807860549336,
   "suppressed_max_gradient_pct": 44.73278242246579,
   "suppressed_location_m": [
    71.0,
    74.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.552544613033206,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 206.0,
   "end_distance_m": 211.0,
   "start_elevation_m": 1285.1183130437325,
   "end_elevation_m": 1286.6459402743842,
   "min_gradient_pct": 2.884286418238844,
   "suppressed_max_gradient_pct": 34.50048268309274,
   "suppressed_location_m": [
    69.0,
    74.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.48534944403991,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 96.0,
   "end_distance_m": 106.0,
   "start_elevation_m": 1262.6153805857966,
   "end_elevation_m": 1265.2639155302006,
   "min_gradient_pct": 6.715910196396635,
   "suppressed_max_gradient_pct": 26.63176523864422,
   "suppressed_location_m": [
    68.0,
    78.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.754786523526718,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 86.0,
   "end_distance_m": 106.0,
   "start_elevation_m": 1260.1129582254953,
   "end_elevation_m": 1265.2639155302006,
   "min_gradient_pct": 7.936766204006744
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.097397542150247,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 86.0,
   "end_distance_m": 111.0,
   "start_elevation_m": 1260.1129582254953,
   "end_elevation_m": 1266.3873076110328,
   "min_gradient_pct": 7.993563870108119
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.28458911938378,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 161.0,
   "end_distance_m": 211.0,
   "start_elevation_m": 1275.5036457146923,
   "end_elevation_m": 1286.6459402743842,
   "min_gradient_pct": 9.193526519404713,
   "suppressed_max_gradient_pct": 22.892360720541546,
   "suppressed_location_m": [
    63.0,
    113.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.699523832119212,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 83.0,
   "end_distance_m": 183.0,
   "start_elevation_m": 1259.5495267383355,
   "end_elevation_m": 1280.2490505704548,
   "min_gradient_pct": 14.541838216950737,
   "suppressed_max_gradient_pct": 20.783681027983448,
   "suppressed_location_m": [
    71.0,
    171.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.318,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 170.0,
  "shape_class": "sustained"
 },
 "length_m": 211.33877423167206,
 "start_elevation_m": 1249.0479955468759,
 "end_elevation_m": 1286.9779222791933,
 "endpoint_gain_m": 37.929926732317426,
 "overall_gradient_pct": 17.94745279005839,
 "accumulated_ascent_m": 37.93911223507416,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.552544613033206,
   "start_distance_m": 206.0,
   "end_distance_m": 211.0,
   "midpoint_distance_m": 208.5,
   "start_elevation_m": 1285.1183130437325,
   "end_elevation_m": 1286.6459402743842,
   "start_xy": [
    999391.6188810673,
    6350113.601300294
   ],
   "end_xy": [
    999387.1085938193,
    6350111.443220373
   ]
  },
  "max_10m": {
   "gradient_pct": 26.48534944403991,
   "start_distance_m": 96.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 101.0,
   "start_elevation_m": 1262.6153805857966,
   "end_elevation_m": 1265.2639155302006,
   "start_xy": [
    999482.8557233596,
    6350170.1135159815
   ],
   "end_xy": [
    999473.4021324824,
    6350169.614790443
   ]
  },
  "max_20m": {
   "gradient_pct": 25.754786523526718,
   "start_distance_m": 86.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 96.0,
   "start_elevation_m": 1260.1129582254953,
   "end_elevation_m": 1265.2639155302006,
   "start_xy": [
    999491.2857667132,
    6350164.734448306
   ],
   "end_xy": [
    999473.4021324824,
    6350169.614790443
   ]
  },
  "max_25m": {
   "gradient_pct": 25.097397542150247,
   "start_distance_m": 86.0,
   "end_distance_m": 111.0,
   "midpoint_distance_m": 98.5,
   "start_elevation_m": 1260.1129582254953,
   "end_elevation_m": 1266.3873076110328,
   "start_xy": [
    999491.2857667132,
    6350164.734448306
   ],
   "end_xy": [
    999468.9672225057,
    6350167.305770413
   ]
  },
  "max_50m": {
   "gradient_pct": 22.28458911938378,
   "start_distance_m": 161.0,
   "end_distance_m": 211.0,
   "midpoint_distance_m": 186.0,
   "start_elevation_m": 1275.5036457146923,
   "end_elevation_m": 1286.6459402743842,
   "start_xy": [
    999430.01504592,
    6350136.832534311
   ],
   "end_xy": [
    999387.1085938193,
    6350111.443220373
   ]
  },
  "max_100m": {
   "gradient_pct": 20.699523832119212,
   "start_distance_m": 83.0,
   "end_distance_m": 183.0,
   "midpoint_distance_m": 133.0,
   "start_elevation_m": 1259.5495267383355,
   "end_elevation_m": 1280.2490505704548,
   "start_xy": [
    999493.8147797193,
    6350163.120728004
   ],
   "end_xy": [
    999411.1742329237,
    6350125.496668778
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 2.884286418238844,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 1249.0479955468759,
   "end_elevation_m": 1249.1922098677878,
   "start_xy": [
    999494.71,
    6350222.242
   ],
   "end_xy": [
    999492.3509621036,
    6350217.844071111
   ]
  },
  "min_10m": {
   "gradient_pct": 6.715910196396635,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 1249.0479955468759,
   "end_elevation_m": 1249.7195865665155,
   "start_xy": [
    999494.71,
    6350222.242
   ],
   "end_xy": [
    999491.0011703796,
    6350213.038554781
   ]
  },
  "min_20m": {
   "gradient_pct": 7.936766204006744,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 1249.0479955468759,
   "end_elevation_m": 1250.6353487876772,
   "start_xy": [
    999494.71,
    6350222.242
   ],
   "end_xy": [
    999493.2454800133,
    6350203.340223273
   ]
  },
  "min_25m": {
   "gradient_pct": 7.993563870108119,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 1249.0479955468759,
   "end_elevation_m": 1251.046386514403,
   "start_xy": [
    999494.71,
    6350222.242
   ],
   "end_xy": [
    999494.7920743789,
    6350198.585431389
   ]
  },
  "min_50m": {
   "gradient_pct": 9.193526519404713,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 1249.0479955468759,
   "end_elevation_m": 1253.6447588065782,
   "start_xy": [
    999494.71,
    6350222.242
   ],
   "end_xy": [
    999501.2088078286,
    6350174.428751058
   ]
  },
  "min_100m": {
   "gradient_pct": 14.541838216950737,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 1249.0479955468759,
   "end_elevation_m": 1263.5898337638266,
   "start_xy": [
    999494.71,
    6350222.242
   ],
   "end_xy": [
    999479.0947530082,
    6350170.905324425
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 40.98407034657612,
   "start_distance_m": 209.0,
   "end_distance_m": 211.0,
   "midpoint_distance_m": 210.0,
   "start_elevation_m": 1285.8262588674527,
   "end_elevation_m": 1286.6459402743842,
   "start_xy": [
    999388.9127087186,
    6350112.306452341
   ],
   "end_xy": [
    999387.1085938193,
    6350111.443220373
   ]
  },
  "max_3m": {
   "gradient_pct": 34.34220928554623,
   "start_distance_m": 208.0,
   "end_distance_m": 211.0,
   "midpoint_distance_m": 209.5,
   "start_elevation_m": 1285.6156739958178,
   "end_elevation_m": 1286.6459402743842,
   "start_xy": [
    999389.8147661681,
    6350112.738068325
   ],
   "end_xy": [
    999387.1085938193,
    6350111.443220373
   ]
  }
 },
 "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": 0.028,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.775,
   "obstruction_max_height_m": 15.78,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    70.0,
    75.0
   ]
  ],
  "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_E999-N6350_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:27:13+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": [
   "E999-N6350"
  ],
  "elevation_blocks": [
   "21LHD8RO@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_0999_6351_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD8RO"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0999_6351_MNT_O_0M50_LAMB93_IGN69": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 15,
   "stations_resolved": 15,
   "width_median_m": 3.75,
   "width_p10_m": 2.75,
   "width_min_m": 2.5,
   "width_max_m": 9.75,
   "bounded_share": 0.467,
   "unbounded_share": 0.533,
   "confidence_median": 0.0,
   "width_median_bounded_m": 2.75,
   "window_m": [
    86.0,
    111.0
   ],
   "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": 15,
    "stations_resolved": 15,
    "width_median_m": 3.0,
    "width_p10_m": 1.4,
    "width_min_m": 0.5,
    "width_max_m": 4.25,
    "bounded_share": 1.0,
    "unbounded_share": 0.0,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.0,
    "window_m": [
     86.0,
     111.0
    ],
    "width_at_max25_m": 3.0,
    "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": "Entraunes",
  "county": "Alpes-Maritimes",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}