{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.5549, 5.5812)",
 "slug": "discovered-lane-43-5549-5-5812",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 30.93956210557849,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 52.0,
   "end_distance_m": 54.0,
   "start_elevation_m": 377.3375149650923,
   "end_elevation_m": 377.95630620720385,
   "min_gradient_pct": -4.725462346729614
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 30.009403905205545,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 51.0,
   "end_distance_m": 54.0,
   "start_elevation_m": 377.0560240900477,
   "end_elevation_m": 377.95630620720385,
   "min_gradient_pct": -4.659585387594234
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.525223399462902,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 35.0,
   "end_distance_m": 40.0,
   "start_elevation_m": 373.2479437169337,
   "end_elevation_m": 374.67420488690686,
   "min_gradient_pct": -4.165184628975567
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.777298185058157,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 33.0,
   "end_distance_m": 43.0,
   "start_elevation_m": 372.84697567756143,
   "end_elevation_m": 375.42470549606725,
   "min_gradient_pct": -3.0355374477579744
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.926345102880703,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 35.0,
   "end_distance_m": 55.0,
   "start_elevation_m": 373.2479437169337,
   "end_elevation_m": 378.23321273750986,
   "min_gradient_pct": -2.0513812968616207
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.680850433384876,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 32.0,
   "end_distance_m": 57.0,
   "start_elevation_m": 372.6575861066176,
   "end_elevation_m": 378.5777987149638,
   "min_gradient_pct": -1.4373729522073972
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.85343547735181,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 19.0,
   "end_distance_m": 69.0,
   "start_elevation_m": 370.0212925622962,
   "end_elevation_m": 380.9480103009721,
   "min_gradient_pct": 0.02957701054822337
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.634298991318246,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 239.0,
   "end_distance_m": 339.0,
   "start_elevation_m": 390.0378567339037,
   "end_elevation_m": 406.67215572522196,
   "min_gradient_pct": 2.4225373508368193
  }
 ],
 "shape": {
  "ascent_concentration": 0.392,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 120.0,
  "shape_class": "sustained"
 },
 "length_m": 339.9215305034873,
 "start_elevation_m": 368.12384488281486,
 "end_elevation_m": 406.84455806247206,
 "endpoint_gain_m": 38.720713179657196,
 "overall_gradient_pct": 11.391074028851477,
 "accumulated_ascent_m": 39.29120315238532,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.525223399462902,
   "start_distance_m": 35.0,
   "end_distance_m": 40.0,
   "midpoint_distance_m": 37.5,
   "start_elevation_m": 373.2479437169337,
   "end_elevation_m": 374.67420488690686,
   "start_xy": [
    908565.5717209826,
    6276181.823348406
   ],
   "end_xy": [
    908567.8276039701,
    6276186.285521861
   ]
  },
  "max_10m": {
   "gradient_pct": 25.777298185058157,
   "start_distance_m": 33.0,
   "end_distance_m": 43.0,
   "midpoint_distance_m": 38.0,
   "start_elevation_m": 372.84697567756143,
   "end_elevation_m": 375.42470549606725,
   "start_xy": [
    908564.7240149928,
    6276180.012074275
   ],
   "end_xy": [
    908569.1811337627,
    6276188.962825934
   ]
  },
  "max_20m": {
   "gradient_pct": 24.926345102880703,
   "start_distance_m": 35.0,
   "end_distance_m": 55.0,
   "midpoint_distance_m": 45.0,
   "start_elevation_m": 373.2479437169337,
   "end_elevation_m": 378.23321273750986,
   "start_xy": [
    908565.5717209826,
    6276181.823348406
   ],
   "end_xy": [
    908574.5952529329,
    6276199.672042227
   ]
  },
  "max_25m": {
   "gradient_pct": 23.680850433384876,
   "start_distance_m": 32.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 44.5,
   "start_elevation_m": 372.6575861066176,
   "end_elevation_m": 378.5777987149638,
   "start_xy": [
    908564.304780197,
    6276179.104196483
   ],
   "end_xy": [
    908575.4976061279,
    6276201.4569116095
   ]
  },
  "max_50m": {
   "gradient_pct": 21.85343547735181,
   "start_distance_m": 19.0,
   "end_distance_m": 69.0,
   "midpoint_distance_m": 44.0,
   "start_elevation_m": 370.0212925622962,
   "end_elevation_m": 380.9480103009721,
   "start_xy": [
    908558.8521819919,
    6276167.302960412
   ],
   "end_xy": [
    908581.314259252,
    6276211.948488995
   ]
  },
  "max_100m": {
   "gradient_pct": 16.634298991318246,
   "start_distance_m": 239.0,
   "end_distance_m": 339.0,
   "midpoint_distance_m": 289.0,
   "start_elevation_m": 390.0378567339037,
   "end_elevation_m": 406.67215572522196,
   "start_xy": [
    908565.1023873435,
    6276356.090704391
   ],
   "end_xy": [
    908585.4298244236,
    6276453.174859919
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.165184628975567,
   "start_distance_m": 141.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 143.5,
   "start_elevation_m": 385.9856904181887,
   "end_elevation_m": 385.77743118673993,
   "start_xy": [
    908612.8195072578,
    6276275.4879006
   ],
   "end_xy": [
    908611.2729048423,
    6276280.242689867
   ]
  },
  "min_10m": {
   "gradient_pct": -3.0355374477579744,
   "start_distance_m": 141.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 146.0,
   "start_elevation_m": 385.9856904181887,
   "end_elevation_m": 385.6821366734129,
   "start_xy": [
    908612.8195072578,
    6276275.4879006
   ],
   "end_xy": [
    908608.6866885679,
    6276284.368519848
   ]
  },
  "min_20m": {
   "gradient_pct": -2.0513812968616207,
   "start_distance_m": 138.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 148.0,
   "start_elevation_m": 386.03449050539655,
   "end_elevation_m": 385.6242142460242,
   "start_xy": [
    908613.7474687072,
    6276272.63502704
   ],
   "end_xy": [
    908603.7952448189,
    6276289.375892218
   ]
  },
  "min_25m": {
   "gradient_pct": -1.4373729522073972,
   "start_distance_m": 138.0,
   "end_distance_m": 163.0,
   "midpoint_distance_m": 150.5,
   "start_elevation_m": 386.03449050539655,
   "end_elevation_m": 385.6751472673447,
   "start_xy": [
    908613.7474687072,
    6276272.63502704
   ],
   "end_xy": [
    908600.3013564268,
    6276292.952586768
   ]
  },
  "min_50m": {
   "gradient_pct": 0.02957701054822337,
   "start_distance_m": 138.0,
   "end_distance_m": 188.0,
   "midpoint_distance_m": 163.0,
   "start_elevation_m": 386.03449050539655,
   "end_elevation_m": 386.04927901067066,
   "start_xy": [
    908613.7474687072,
    6276272.63502704
   ],
   "end_xy": [
    908582.8319144665,
    6276310.836059518
   ]
  },
  "min_100m": {
   "gradient_pct": 2.4225373508368193,
   "start_distance_m": 96.0,
   "end_distance_m": 196.0,
   "midpoint_distance_m": 146.0,
   "start_elevation_m": 383.90063853510514,
   "end_elevation_m": 386.32317588594196,
   "start_xy": [
    908594.7027504353,
    6276235.388585049
   ],
   "end_xy": [
    908577.2416930391,
    6276316.558770798
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 30.93956210557849,
   "start_distance_m": 52.0,
   "end_distance_m": 54.0,
   "midpoint_distance_m": 53.0,
   "start_elevation_m": 377.3375149650923,
   "end_elevation_m": 377.95630620720385,
   "start_xy": [
    908573.2417231404,
    6276196.994738154
   ],
   "end_xy": [
    908574.1440763354,
    6276198.779607536
   ]
  },
  "max_3m": {
   "gradient_pct": 30.009403905205545,
   "start_distance_m": 51.0,
   "end_distance_m": 54.0,
   "midpoint_distance_m": 52.5,
   "start_elevation_m": 377.0560240900477,
   "end_elevation_m": 377.95630620720385,
   "start_xy": [
    908572.7905465427,
    6276196.102303463
   ],
   "end_xy": [
    908574.1440763354,
    6276198.779607536
   ]
  }
 },
 "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": 0.66,
   "obstruction_max_height_m": 18.64,
   "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": "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-pr4",
   "road_pbf": "block-batch-fr-pr4.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_E908-N6276_0m5@21LHD7PQ-2025-03-14.tif"
  ],
  "calculated_at": "2026-09-25T09:28:37+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr4",
  "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": [
   "E908-N6276"
  ],
  "elevation_blocks": [
   "21LHD7PQ@2025-03-14"
  ],
  "ign_dalles": [
   "LHD_FXX_0908_6277_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD7PQ"
  ],
  "ign_editions": [
   "2025-03-14"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0908_6277_MNT_O_0M50_LAMB93_IGN69": "2025-03-14"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 20,
   "stations_resolved": 20,
   "width_median_m": 5.12,
   "width_p10_m": 2.93,
   "width_min_m": 1.5,
   "width_max_m": 12.0,
   "bounded_share": 0.1,
   "unbounded_share": 0.9,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.5,
   "window_m": [
    32.0,
    57.0
   ],
   "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": 20,
    "stations_resolved": 20,
    "width_median_m": 2.38,
    "width_p10_m": 0.73,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.95,
    "unbounded_share": 0.05,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.25,
    "window_m": [
     32.0,
     57.0
    ],
    "width_at_max25_m": 2.25,
    "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": "Vauvenargues",
  "county": "Bouches-du-Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}