{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.3971, 0.9113)",
 "slug": "discovered-lane-43-3971-0-9113",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.979109333263636,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2273.0,
   "end_distance_m": 2275.0,
   "start_elevation_m": 278.305803041729,
   "end_elevation_m": 278.7653852283943,
   "min_gradient_pct": -11.56871558745678
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.11822833305443,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2273.0,
   "end_distance_m": 2276.0,
   "start_elevation_m": 278.305803041729,
   "end_elevation_m": 278.96934989172064,
   "min_gradient_pct": -11.483195442024416
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.56655660461297,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2270.0,
   "end_distance_m": 2275.0,
   "start_elevation_m": 277.68705739816363,
   "end_elevation_m": 278.7653852283943,
   "min_gradient_pct": -11.245279812918625
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.994215832195664,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2268.0,
   "end_distance_m": 2278.0,
   "start_elevation_m": 277.2780728084358,
   "end_elevation_m": 279.3774943916554,
   "min_gradient_pct": -10.873689878685013
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.43873163516679,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2259.0,
   "end_distance_m": 2279.0,
   "start_elevation_m": 275.4895292054428,
   "end_elevation_m": 279.57727553247616,
   "min_gradient_pct": -10.617062908702763
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.16630879397826,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2259.0,
   "end_distance_m": 2284.0,
   "start_elevation_m": 275.4895292054428,
   "end_elevation_m": 280.5311064039374,
   "min_gradient_pct": -10.579620097476322
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.33100167074258,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2247.0,
   "end_distance_m": 2297.0,
   "start_elevation_m": 273.28376673407564,
   "end_elevation_m": 282.94926756944693,
   "min_gradient_pct": -9.900037345575981
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.13657557979036,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2232.0,
   "end_distance_m": 2332.0,
   "start_elevation_m": 270.83772382079525,
   "end_elevation_m": 288.9742994005856,
   "min_gradient_pct": -7.767584642302239
  }
 ],
 "shape": {
  "ascent_concentration": 0.578,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 275.0,
  "shape_class": "stepped"
 },
 "length_m": 2742.034502151064,
 "start_elevation_m": 198.2626130566448,
 "end_elevation_m": 304.11498537645787,
 "endpoint_gain_m": 105.85237231981307,
 "overall_gradient_pct": 3.8603588772050204,
 "accumulated_ascent_m": 121.74582013886226,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.56655660461297,
   "start_distance_m": 2270.0,
   "end_distance_m": 2275.0,
   "midpoint_distance_m": 2272.5,
   "start_elevation_m": 277.68705739816363,
   "end_elevation_m": 278.7653852283943,
   "start_xy": [
    529800.22799619,
    6257967.51993548
   ],
   "end_xy": [
    529795.7209963222,
    6257969.684872475
   ]
  },
  "max_10m": {
   "gradient_pct": 20.994215832195664,
   "start_distance_m": 2268.0,
   "end_distance_m": 2278.0,
   "midpoint_distance_m": 2273.0,
   "start_elevation_m": 277.2780728084358,
   "end_elevation_m": 279.3774943916554,
   "start_xy": [
    529802.0307961369,
    6257966.653960682
   ],
   "end_xy": [
    529793.0167964016,
    6257970.983834673
   ]
  },
  "max_20m": {
   "gradient_pct": 20.43873163516679,
   "start_distance_m": 2259.0,
   "end_distance_m": 2279.0,
   "midpoint_distance_m": 2269.0,
   "start_elevation_m": 275.4895292054428,
   "end_elevation_m": 279.57727553247616,
   "start_xy": [
    529810.1433958987,
    6257962.757074092
   ],
   "end_xy": [
    529792.1153964282,
    6257971.416822072
   ]
  },
  "max_25m": {
   "gradient_pct": 20.16630879397826,
   "start_distance_m": 2259.0,
   "end_distance_m": 2284.0,
   "midpoint_distance_m": 2271.5,
   "start_elevation_m": 275.4895292054428,
   "end_elevation_m": 280.5311064039374,
   "start_xy": [
    529810.1433958987,
    6257962.757074092
   ],
   "end_xy": [
    529787.6083965604,
    6257973.581759067
   ]
  },
  "max_50m": {
   "gradient_pct": 19.33100167074258,
   "start_distance_m": 2247.0,
   "end_distance_m": 2297.0,
   "midpoint_distance_m": 2272.0,
   "start_elevation_m": 273.28376673407564,
   "end_elevation_m": 282.94926756944693,
   "start_xy": [
    529820.9601955812,
    6257957.561225303
   ],
   "end_xy": [
    529775.8901969044,
    6257979.210595254
   ]
  },
  "max_100m": {
   "gradient_pct": 18.13657557979036,
   "start_distance_m": 2232.0,
   "end_distance_m": 2332.0,
   "midpoint_distance_m": 2282.0,
   "start_elevation_m": 270.83772382079525,
   "end_elevation_m": 288.9742994005856,
   "start_xy": [
    529834.4811951843,
    6257951.066414318
   ],
   "end_xy": [
    529744.3205454042,
    6257994.317455408
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.245279812918625,
   "start_distance_m": 649.0,
   "end_distance_m": 654.0,
   "midpoint_distance_m": 651.5,
   "start_elevation_m": 215.98148329867144,
   "end_elevation_m": 215.4192193080255,
   "start_xy": [
    531284.455370052,
    6257403.522297537
   ],
   "end_xy": [
    531279.8017912955,
    6257401.69358084
   ]
  },
  "min_10m": {
   "gradient_pct": -10.873689878685013,
   "start_distance_m": 647.0,
   "end_distance_m": 657.0,
   "midpoint_distance_m": 652.0,
   "start_elevation_m": 216.18076762464077,
   "end_elevation_m": 215.09339863677226,
   "start_xy": [
    531286.3168015546,
    6257404.253784215
   ],
   "end_xy": [
    531277.0096440417,
    6257400.596350822
   ]
  },
  "min_20m": {
   "gradient_pct": -10.617062908702763,
   "start_distance_m": 637.0,
   "end_distance_m": 657.0,
   "midpoint_distance_m": 647.0,
   "start_elevation_m": 217.21681121851282,
   "end_elevation_m": 215.09339863677226,
   "start_xy": [
    531295.3375709635,
    6257408.552130742
   ],
   "end_xy": [
    531277.0096440417,
    6257400.596350822
   ]
  },
  "min_25m": {
   "gradient_pct": -10.579620097476322,
   "start_distance_m": 633.0,
   "end_distance_m": 658.0,
   "midpoint_distance_m": 645.5,
   "start_elevation_m": 217.64753682091336,
   "end_elevation_m": 215.00263179654428,
   "start_xy": [
    531298.911023964,
    6257410.349471459
   ],
   "end_xy": [
    531276.0789282904,
    6257400.230607483
   ]
  },
  "min_50m": {
   "gradient_pct": -9.900037345575981,
   "start_distance_m": 620.0,
   "end_distance_m": 670.0,
   "midpoint_distance_m": 645.0,
   "start_elevation_m": 218.8879928072008,
   "end_elevation_m": 213.9379741344128,
   "start_xy": [
    531310.5273858431,
    6257416.185577248
   ],
   "end_xy": [
    531264.9103392748,
    6257395.84168741
   ]
  },
  "min_100m": {
   "gradient_pct": -7.767584642302239,
   "start_distance_m": 610.0,
   "end_distance_m": 710.0,
   "midpoint_distance_m": 660.0,
   "start_elevation_m": 219.49970787362548,
   "end_elevation_m": 211.73212323132324,
   "start_xy": [
    531318.4306464035,
    6257422.18222767
   ],
   "end_xy": [
    531225.1152737435,
    6257392.528601837
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.979109333263636,
   "start_distance_m": 2273.0,
   "end_distance_m": 2275.0,
   "midpoint_distance_m": 2274.0,
   "start_elevation_m": 278.305803041729,
   "end_elevation_m": 278.7653852283943,
   "start_xy": [
    529797.5237962693,
    6257968.818897678
   ],
   "end_xy": [
    529795.7209963222,
    6257969.684872475
   ]
  },
  "max_3m": {
   "gradient_pct": 22.11822833305443,
   "start_distance_m": 2273.0,
   "end_distance_m": 2276.0,
   "midpoint_distance_m": 2274.5,
   "start_elevation_m": 278.305803041729,
   "end_elevation_m": 278.96934989172064,
   "start_xy": [
    529797.5237962693,
    6257968.818897678
   ],
   "end_xy": [
    529794.8195963487,
    6257970.117859875
   ]
  }
 },
 "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": 0.175,
   "obstruction_max_height_m": 32.0,
   "flagged_windows_m": [
    50,
    100
   ]
  },
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "06fa4c370391597f015858e97dcf01ca2f5b3640",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:0048c2bbb24ab95e",
   "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-pyr2",
   "road_pbf": "block-batch-fr-pyr2.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:c54ac68b3f57b41b"
  },
  "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_E529-N6257_0m5@22LHD1HQ-2025-03-25.tif",
   "data/cache/fr/ign-lidarhd_dtm_E529-N6258_0m5@22LHD1HQ-2025-03-25.tif",
   "data/cache/fr/ign-lidarhd_dtm_E530-N6257_0m5@22LHD1HQ-2025-03-25.tif",
   "data/cache/fr/ign-lidarhd_dtm_E530-N6258_0m5@22LHD1HQ-2025-03-25.tif",
   "data/cache/fr/ign-lidarhd_dtm_E531-N6257_0m5@22LHD1HQ-2026-03-20.tif"
  ],
  "calculated_at": "2026-09-20T07:02:05+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pyr2",
  "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": [
   "E529-N6257",
   "E529-N6258",
   "E530-N6257",
   "E530-N6258",
   "E531-N6257"
  ],
  "elevation_blocks": [
   "22LHD1HQ@2025-03-25",
   "22LHD1HQ@2026-03-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0529_6258_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0529_6259_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0530_6258_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0530_6259_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0531_6258_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD1HQ"
  ],
  "ign_editions": [
   "2025-03-25",
   "2026-03-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0529_6258_MNT_O_0M50_LAMB93_IGN69": "2025-03-25",
   "LHD_FXX_0529_6259_MNT_O_0M50_LAMB93_IGN69": "2025-03-25",
   "LHD_FXX_0530_6258_MNT_O_0M50_LAMB93_IGN69": "2025-03-25",
   "LHD_FXX_0530_6259_MNT_O_0M50_LAMB93_IGN69": "2025-03-25",
   "LHD_FXX_0531_6258_MNT_O_0M50_LAMB93_IGN69": "2026-03-20"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 116,
   "stations_resolved": 116,
   "width_median_m": 5.0,
   "width_p10_m": 3.75,
   "width_min_m": 1.5,
   "width_max_m": 12.0,
   "bounded_share": 0.31,
   "unbounded_share": 0.69,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.25,
   "window_m": [
    2259.0,
    2284.0
   ],
   "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": 116,
    "stations_resolved": 116,
    "width_median_m": 6.75,
    "width_p10_m": 1.25,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.75,
    "unbounded_share": 0.25,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.75,
    "window_m": [
     2259.0,
     2284.0
    ],
    "width_at_max25_m": 8.5,
    "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": "Frontignan-Sav\u00e8s",
  "county": "Haute-Garonne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}