{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (44.0955, 3.9531)",
 "slug": "discovered-lane-44-0955-3-9531",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 38.03827185385842,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 204.0,
   "end_distance_m": 206.0,
   "start_elevation_m": 184.46443062828988,
   "end_elevation_m": 185.22519606536704,
   "min_gradient_pct": -9.00492884612305
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.384202599821265,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 176.0,
   "end_distance_m": 179.0,
   "start_elevation_m": 177.9958365919672,
   "end_elevation_m": 178.93736266996183,
   "min_gradient_pct": -7.080244781910021
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.022537161212313,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 174.0,
   "end_distance_m": 179.0,
   "start_elevation_m": 177.4362358119012,
   "end_elevation_m": 178.93736266996183,
   "min_gradient_pct": -3.309891363075508
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.279998171360603,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 169.0,
   "end_distance_m": 179.0,
   "start_elevation_m": 176.10936285282577,
   "end_elevation_m": 178.93736266996183,
   "min_gradient_pct": 2.515278430102228
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.735870507331327,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 162.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 174.3757725987689,
   "end_elevation_m": 179.72294670023516,
   "min_gradient_pct": 2.8853858266558063
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 26.38405645623459,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 157.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 173.1269325861765,
   "end_elevation_m": 179.72294670023516,
   "min_gradient_pct": 2.9438218679433703
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 25.019703557767972,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 149.0,
   "end_distance_m": 199.0,
   "start_elevation_m": 171.25510141655718,
   "end_elevation_m": 183.76495319544117,
   "min_gradient_pct": 3.469324495589717
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.229864030998755,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 106.0,
   "end_distance_m": 206.0,
   "start_elevation_m": 164.9953320343683,
   "end_elevation_m": 185.22519606536704,
   "min_gradient_pct": 6.1881841693610795
  }
 ],
 "shape": {
  "ascent_concentration": 0.469,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 69.0,
  "shape_class": "stepped"
 },
 "length_m": 206.78082998088624,
 "start_elevation_m": 157.93110546263063,
 "end_elevation_m": 185.8098347478633,
 "endpoint_gain_m": 27.87872928523268,
 "overall_gradient_pct": 13.482260075950776,
 "accumulated_ascent_m": 28.161980316328027,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.022537161212313,
   "start_distance_m": 174.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 176.5,
   "start_elevation_m": 177.4362358119012,
   "end_elevation_m": 178.93736266996183,
   "start_xy": [
    776278.9297455874,
    6333442.898556975
   ],
   "end_xy": [
    776273.988033902,
    6333443.659796502
   ]
  },
  "max_10m": {
   "gradient_pct": 28.279998171360603,
   "start_distance_m": 169.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 174.0,
   "start_elevation_m": 176.10936285282577,
   "end_elevation_m": 178.93736266996183,
   "start_xy": [
    776283.8714572729,
    6333442.137317448
   ],
   "end_xy": [
    776273.988033902,
    6333443.659796502
   ]
  },
  "max_20m": {
   "gradient_pct": 26.735870507331327,
   "start_distance_m": 162.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 172.0,
   "start_elevation_m": 174.3757725987689,
   "end_elevation_m": 179.72294670023516,
   "start_xy": [
    776290.8050492526,
    6333441.762966799
   ],
   "end_xy": [
    776271.0230068907,
    6333444.116540219
   ]
  },
  "max_25m": {
   "gradient_pct": 26.38405645623459,
   "start_distance_m": 157.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 169.5,
   "start_elevation_m": 173.1269325861765,
   "end_elevation_m": 179.72294670023516,
   "start_xy": [
    776295.7754346953,
    6333442.306352989
   ],
   "end_xy": [
    776271.0230068907,
    6333444.116540219
   ]
  },
  "max_50m": {
   "gradient_pct": 25.019703557767972,
   "start_distance_m": 149.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 174.0,
   "start_elevation_m": 171.25510141655718,
   "end_elevation_m": 183.76495319544117,
   "start_xy": [
    776303.3152987016,
    6333440.7866670815
   ],
   "end_xy": [
    776255.5701457325,
    6333449.934105318
   ]
  },
  "max_100m": {
   "gradient_pct": 20.229864030998755,
   "start_distance_m": 106.0,
   "end_distance_m": 206.0,
   "midpoint_distance_m": 156.0,
   "start_elevation_m": 164.9953320343683,
   "end_elevation_m": 185.22519606536704,
   "start_xy": [
    776316.1157625364,
    6333401.689546026
   ],
   "end_xy": [
    776251.3848569898,
    6333455.5451086275
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.309891363075508,
   "start_distance_m": 1.0,
   "end_distance_m": 6.0,
   "midpoint_distance_m": 3.5,
   "start_elevation_m": 157.9374592173767,
   "end_elevation_m": 157.77196464922292,
   "start_xy": [
    776263.69182686,
    6333320.91321268
   ],
   "end_xy": [
    776267.0259611597,
    6333324.639276082
   ]
  },
  "min_10m": {
   "gradient_pct": 2.515278430102228,
   "start_distance_m": 65.0,
   "end_distance_m": 75.0,
   "midpoint_distance_m": 70.0,
   "start_elevation_m": 162.36563334080287,
   "end_elevation_m": 162.6171611838131,
   "start_xy": [
    776309.619482668,
    6333362.285634054
   ],
   "end_xy": [
    776313.4165550865,
    6333371.536701076
   ]
  },
  "min_20m": {
   "gradient_pct": 2.8853858266558063,
   "start_distance_m": 56.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 66.0,
   "start_elevation_m": 162.0660654253873,
   "end_elevation_m": 162.64314259071847,
   "start_xy": [
    776305.4921032261,
    6333354.298831485
   ],
   "end_xy": [
    776313.7962623283,
    6333372.461807778
   ]
  },
  "min_25m": {
   "gradient_pct": 2.9438218679433703,
   "start_distance_m": 46.0,
   "end_distance_m": 71.0,
   "midpoint_distance_m": 58.5,
   "start_elevation_m": 161.7824944427389,
   "end_elevation_m": 162.51844990972475,
   "start_xy": [
    776300.0013032827,
    6333346.009976271
   ],
   "end_xy": [
    776311.897726119,
    6333367.836274267
   ]
  },
  "min_50m": {
   "gradient_pct": 3.469324495589717,
   "start_distance_m": 34.0,
   "end_distance_m": 84.0,
   "midpoint_distance_m": 59.0,
   "start_elevation_m": 161.27937738214,
   "end_elevation_m": 163.01403962993487,
   "start_xy": [
    776291.3672897593,
    6333337.86349732
   ],
   "end_xy": [
    776316.663914378,
    6333379.905897281
   ]
  },
  "min_100m": {
   "gradient_pct": 6.1881841693610795,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 157.93110546263063,
   "end_elevation_m": 164.1192896319917,
   "start_xy": [
    776263.025,
    6333320.168
   ],
   "end_xy": [
    776317.1174888843,
    6333395.773758308
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 38.03827185385842,
   "start_distance_m": 204.0,
   "end_distance_m": 206.0,
   "midpoint_distance_m": 205.0,
   "start_elevation_m": 184.46443062828988,
   "end_elevation_m": 185.22519606536704,
   "start_xy": [
    776252.5806537734,
    6333453.941964825
   ],
   "end_xy": [
    776251.3848569898,
    6333455.5451086275
   ]
  },
  "max_3m": {
   "gradient_pct": 31.384202599821265,
   "start_distance_m": 176.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 177.5,
   "start_elevation_m": 177.9958365919672,
   "end_elevation_m": 178.93736266996183,
   "start_xy": [
    776276.9530609132,
    6333443.203052786
   ],
   "end_xy": [
    776273.988033902,
    6333443.659796502
   ]
  }
 },
 "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": 0.361,
   "obstruction_max_height_m": 13.92,
   "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",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "1cc9fdcd6556a02163cb21acb2293cad3067d2a1",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "fr-mc6",
   "road_pbf": "block-batch-fr-mc6.osm.pbf",
   "region_key": "france",
   "crs": "EPSG:2154",
   "elevation_provider_key": "ign-lidarhd",
   "tile_index": "wms-grid",
   "authority": "bdtopo",
   "registry_pbf": "france-vosges-2026-09-16.osm.pbf",
   "tile_index_snapshot": "sha256:af4eae1f5df9e232"
  },
  "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_E776-N6333_0m5@21LHD4MO-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T17:32:37+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc6",
  "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": [
   "E776-N6333"
  ],
  "elevation_blocks": [
   "21LHD4MO@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0776_6334_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MO"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0776_6334_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 15,
   "stations_resolved": 15,
   "width_median_m": 4.25,
   "width_p10_m": 3.25,
   "width_min_m": 3.25,
   "width_max_m": 9.0,
   "bounded_share": 0.467,
   "unbounded_share": 0.533,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.25,
   "window_m": [
    157.0,
    182.0
   ],
   "width_at_max25_m": 4.5,
   "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": 15,
    "stations_resolved": 15,
    "width_median_m": 2.0,
    "width_p10_m": 0.85,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.933,
    "unbounded_share": 0.067,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.0,
    "window_m": [
     157.0,
     182.0
    ],
    "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": "Mialet",
  "county": "Gard",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}