{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.3877, 6.0946)",
 "slug": "discovered-lane-43-3877-6-0946",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.75904539374176,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 145.0,
   "end_distance_m": 147.0,
   "start_elevation_m": 307.52361842697906,
   "end_elevation_m": 308.3987993348539,
   "min_gradient_pct": -14.295902565288543
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 36.03503499967928,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 144.0,
   "end_distance_m": 147.0,
   "start_elevation_m": 307.3177482848635,
   "end_elevation_m": 308.3987993348539,
   "min_gradient_pct": -6.470162667829982
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.628488007561373,
   "diagnostic": false,
   "flags": [
    "suppression_unstable",
    "canopy_or_structure"
   ],
   "start_distance_m": 142.0,
   "end_distance_m": 147.0,
   "start_elevation_m": 306.8173749344758,
   "end_elevation_m": 308.3987993348539,
   "min_gradient_pct": -1.3813805711720306
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.091083278675796,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 188.0,
   "end_distance_m": 198.0,
   "start_elevation_m": 315.82649240424576,
   "end_elevation_m": 318.33560073211333,
   "min_gradient_pct": 3.5768997784668954
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.50244561696485,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 176.0,
   "end_distance_m": 196.0,
   "start_elevation_m": 313.18478603836047,
   "end_elevation_m": 317.88527516175344,
   "min_gradient_pct": 7.447123056782914
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.093020901509135,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 175.0,
   "end_distance_m": 200.0,
   "start_elevation_m": 312.9626234563442,
   "end_elevation_m": 318.7358786817215,
   "min_gradient_pct": 7.526302874799285
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.295950412834713,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 162.0,
   "end_distance_m": 212.0,
   "start_elevation_m": 310.22462481525605,
   "end_elevation_m": 320.8726000216734,
   "min_gradient_pct": 8.241783875270926
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.929592684493514,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 129.0,
   "end_distance_m": 229.0,
   "start_elevation_m": 304.9378990509998,
   "end_elevation_m": 323.86749173549333,
   "min_gradient_pct": 10.57570922646363
  }
 ],
 "shape": {
  "ascent_concentration": 0.361,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 108.0,
  "shape_class": "sustained"
 },
 "length_m": 237.54224399799526,
 "start_elevation_m": 289.8732623004162,
 "end_elevation_m": 323.96445363279724,
 "endpoint_gain_m": 34.09119133238107,
 "overall_gradient_pct": 14.351633106854369,
 "accumulated_ascent_m": 34.67044155290279,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.628488007561373,
   "start_distance_m": 142.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 144.5,
   "start_elevation_m": 306.8173749344758,
   "end_elevation_m": 308.3987993348539,
   "start_xy": [
    950823.6848262373,
    6259182.685972834
   ],
   "end_xy": [
    950819.5987301999,
    6259185.567607643
   ]
  },
  "max_10m": {
   "gradient_pct": 25.091083278675796,
   "start_distance_m": 188.0,
   "end_distance_m": 198.0,
   "midpoint_distance_m": 193.0,
   "start_elevation_m": 315.82649240424576,
   "end_elevation_m": 318.33560073211333,
   "start_xy": [
    950793.8436456615,
    6259215.958436153
   ],
   "end_xy": [
    950786.3251922836,
    6259222.551831243
   ]
  },
  "max_20m": {
   "gradient_pct": 23.50244561696485,
   "start_distance_m": 176.0,
   "end_distance_m": 196.0,
   "midpoint_distance_m": 186.0,
   "start_elevation_m": 313.18478603836047,
   "end_elevation_m": 317.88527516175344,
   "start_xy": [
    950801.3968599432,
    6259206.682406613
   ],
   "end_xy": [
    950787.8288829591,
    6259221.233152225
   ]
  },
  "max_25m": {
   "gradient_pct": 23.093020901509135,
   "start_distance_m": 175.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 187.5,
   "start_elevation_m": 312.9626234563442,
   "end_elevation_m": 318.7358786817215,
   "start_xy": [
    950801.9987474352,
    6259205.8838257175
   ],
   "end_xy": [
    950784.821501608,
    6259223.870510261
   ]
  },
  "max_50m": {
   "gradient_pct": 21.295950412834713,
   "start_distance_m": 162.0,
   "end_distance_m": 212.0,
   "midpoint_distance_m": 187.0,
   "start_elevation_m": 310.22462481525605,
   "end_elevation_m": 320.8726000216734,
   "start_xy": [
    950807.7085602914,
    6259194.469589682
   ],
   "end_xy": [
    950775.0076222202,
    6259230.635596366
   ]
  },
  "max_100m": {
   "gradient_pct": 18.929592684493514,
   "start_distance_m": 129.0,
   "end_distance_m": 229.0,
   "midpoint_distance_m": 179.0,
   "start_elevation_m": 304.9378990509998,
   "end_elevation_m": 323.86749173549333,
   "start_xy": [
    950834.3086759346,
    6259175.193722331
   ],
   "end_xy": [
    950759.8426164142,
    6259238.270135928
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.3813805711720306,
   "start_distance_m": 232.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 234.5,
   "start_elevation_m": 324.04674454263323,
   "end_elevation_m": 323.97767551407463,
   "start_xy": [
    950757.0251074261,
    6259239.300496594
   ],
   "end_xy": [
    950752.3292591126,
    6259241.017764371
   ]
  },
  "min_10m": {
   "gradient_pct": 3.5768997784668954,
   "start_distance_m": 227.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 232.0,
   "start_elevation_m": 323.61998553622794,
   "end_elevation_m": 323.97767551407463,
   "start_xy": [
    950761.7209557395,
    6259237.583228817
   ],
   "end_xy": [
    950752.3292591126,
    6259241.017764371
   ]
  },
  "min_20m": {
   "gradient_pct": 7.447123056782914,
   "start_distance_m": 54.0,
   "end_distance_m": 74.0,
   "midpoint_distance_m": 64.0,
   "start_elevation_m": 296.4549639489547,
   "end_elevation_m": 297.94438856031127,
   "start_xy": [
    950890.6800434809,
    6259133.865564988
   ],
   "end_xy": [
    950872.30493011,
    6259140.222117506
   ]
  },
  "min_25m": {
   "gradient_pct": 7.526302874799285,
   "start_distance_m": 44.0,
   "end_distance_m": 69.0,
   "midpoint_distance_m": 56.5,
   "start_elevation_m": 295.59071920542345,
   "end_elevation_m": 297.4722949241233,
   "start_xy": [
    950893.9427464175,
    6259125.031535267
   ],
   "end_xy": [
    950877.1085664793,
    6259138.834645838
   ]
  },
  "min_50m": {
   "gradient_pct": 8.241783875270926,
   "start_distance_m": 26.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 51.0,
   "start_elevation_m": 294.0055522660902,
   "end_elevation_m": 298.12644420372567,
   "start_xy": [
    950911.2930426054,
    6259120.685363881
   ],
   "end_xy": [
    950870.3834755622,
    6259140.777106173
   ]
  },
  "min_100m": {
   "gradient_pct": 10.57570922646363,
   "start_distance_m": 26.0,
   "end_distance_m": 126.0,
   "midpoint_distance_m": 76.0,
   "start_elevation_m": 294.0055522660902,
   "end_elevation_m": 304.58126149255384,
   "start_xy": [
    950911.2930426054,
    6259120.685363881
   ],
   "end_xy": [
    950836.760333557,
    6259173.464741445
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.75904539374176,
   "start_distance_m": 145.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 146.0,
   "start_elevation_m": 307.52361842697906,
   "end_elevation_m": 308.3987993348539,
   "start_xy": [
    950821.2331686148,
    6259184.41495372
   ],
   "end_xy": [
    950819.5987301999,
    6259185.567607643
   ]
  },
  "max_3m": {
   "gradient_pct": 36.03503499967928,
   "start_distance_m": 144.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 145.5,
   "start_elevation_m": 307.3177482848635,
   "end_elevation_m": 308.3987993348539,
   "start_xy": [
    950822.0503878223,
    6259183.838626758
   ],
   "end_xy": [
    950819.5987301999,
    6259185.567607643
   ]
  }
 },
 "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": {
  "texture_windows": {
   "rounds": 0,
   "windows_masked": [],
   "advisory": [],
   "unresolved": [],
   "unstable": [
    {
     "window_m": 5.0,
     "start_m": 142.0,
     "end_m": 147.0,
     "raw_pct": 31.63,
     "reason": "short-step",
     "perturbations": [
      "phase+0.000/mask+0",
      "phase+0.333/mask+1",
      "phase+0.667/mask-1"
     ],
     "perturbation_reasons": [
      "short-step",
      "",
      ""
     ]
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.285,
   "obstruction_max_height_m": 15.54,
   "flagged_windows_m": [
    2,
    3,
    5.0,
    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": "41205ec4649bb0a4093af76ff34281a5d9a13832",
   "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-pr6",
   "road_pbf": "block-batch-fr-pr6.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:ba95a0bf562c86eb"
  },
  "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_E950-N6259_0m5@22LHD6QQ-2025-03-24.tif"
  ],
  "calculated_at": "2026-09-25T09:17:42+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr6",
  "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": [
   "E950-N6259"
  ],
  "elevation_blocks": [
   "22LHD6QQ@2025-03-24"
  ],
  "ign_dalles": [
   "LHD_FXX_0950_6260_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD6QQ"
  ],
  "ign_editions": [
   "2025-03-24"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0950_6260_MNT_O_0M50_LAMB93_IGN69": "2025-03-24"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "suppression_unstable": [
   5.0
  ],
  "carriageway": {
   "stations": 14,
   "stations_resolved": 14,
   "width_median_m": 4.12,
   "width_p10_m": 1.55,
   "width_min_m": 1.25,
   "width_max_m": 10.75,
   "bounded_share": 0.357,
   "unbounded_share": 0.643,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.0,
   "window_m": [
    175.0,
    200.0
   ],
   "width_at_max25_m": 4.38,
   "window_stations": 6,
   "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": 14,
    "stations_resolved": 14,
    "width_median_m": 3.38,
    "width_p10_m": 1.32,
    "width_min_m": 0.5,
    "width_max_m": 10.75,
    "bounded_share": 0.714,
    "unbounded_share": 0.286,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.38,
    "window_m": [
     175.0,
     200.0
    ],
    "width_at_max25_m": 4.38,
    "window_stations": 6,
    "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": "Camps-la-Source",
  "county": "Var",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}