{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (45.4061, 3.7200)",
 "slug": "discovered-lane-45-4061-3-7200",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.485199668796213,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 559.0,
   "end_distance_m": 561.0,
   "start_elevation_m": 620.3891924553957,
   "end_elevation_m": 620.9588964487716,
   "min_gradient_pct": -26.931989611261997,
   "suppressed_max_gradient_pct": 50.58078132470882,
   "suppressed_location_m": [
    171.0,
    173.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.59628946179949,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 558.0,
   "end_distance_m": 561.0,
   "start_elevation_m": 620.1310077649176,
   "end_elevation_m": 620.9588964487716,
   "min_gradient_pct": -18.37623599683032,
   "suppressed_max_gradient_pct": 47.831399381448136,
   "suppressed_location_m": [
    170.0,
    173.0
   ],
   "suppressed_min_gradient_pct": -19.23867826977812,
   "suppressed_min_location_m": [
    177.0,
    180.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.760915825526354,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 556.0,
   "end_distance_m": 561.0,
   "start_elevation_m": 619.6708506574953,
   "end_elevation_m": 620.9588964487716,
   "min_gradient_pct": -12.497589551760484,
   "suppressed_max_gradient_pct": 40.64846663650542,
   "suppressed_location_m": [
    170.0,
    175.0
   ],
   "suppressed_min_gradient_pct": -14.128625808966717,
   "suppressed_min_location_m": [
    177.0,
    182.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.041486702593147,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 552.0,
   "end_distance_m": 562.0,
   "start_elevation_m": 618.9612493171944,
   "end_elevation_m": 621.1653979874537,
   "min_gradient_pct": -5.846887992800021,
   "suppressed_max_gradient_pct": 24.765308750028225,
   "suppressed_location_m": [
    167.0,
    177.0
   ],
   "suppressed_min_gradient_pct": -12.156345349714002,
   "suppressed_min_location_m": [
    177.0,
    187.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.070156687470103,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 570.0,
   "end_distance_m": 590.0,
   "start_elevation_m": 622.354731427705,
   "end_elevation_m": 626.568762765199,
   "min_gradient_pct": -1.8643234825998434,
   "suppressed_min_gradient_pct": -8.928952638253804,
   "suppressed_min_location_m": [
    177.0,
    197.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.839158006159323,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 574.0,
   "end_distance_m": 599.0,
   "start_elevation_m": 623.2018206567893,
   "end_elevation_m": 628.4116101583292,
   "min_gradient_pct": -0.36173882977846006,
   "suppressed_min_gradient_pct": -5.79416741302839,
   "suppressed_min_location_m": [
    176.0,
    201.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.210381500409767,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 555.0,
   "end_distance_m": 605.0,
   "start_elevation_m": 619.4674227322805,
   "end_elevation_m": 629.5726134824854,
   "min_gradient_pct": 2.1284973270353476,
   "suppressed_min_gradient_pct": -0.905712737918293,
   "suppressed_min_location_m": [
    177.0,
    227.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.525551701975587,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 509.0,
   "end_distance_m": 609.0,
   "start_elevation_m": 612.7400911624699,
   "end_elevation_m": 630.2656428644455,
   "min_gradient_pct": 2.69630265172259,
   "suppressed_min_gradient_pct": 1.7616131651437854,
   "suppressed_min_location_m": [
    176.0,
    276.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.479,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 142.0,
  "shape_class": "stepped"
 },
 "length_m": 614.3618215097636,
 "start_elevation_m": 585.5215378417881,
 "end_elevation_m": 630.3045494931739,
 "endpoint_gain_m": 44.78301165138578,
 "overall_gradient_pct": 7.289354592597203,
 "accumulated_ascent_m": 48.93823787201734,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.760915825526354,
   "start_distance_m": 556.0,
   "end_distance_m": 561.0,
   "midpoint_distance_m": 558.5,
   "start_elevation_m": 619.6708506574953,
   "end_elevation_m": 620.9588964487716,
   "start_xy": [
    756459.4907553857,
    6478877.2379246885
   ],
   "end_xy": [
    756463.9014455287,
    6478879.534492356
   ]
  },
  "max_10m": {
   "gradient_pct": 22.041486702593147,
   "start_distance_m": 552.0,
   "end_distance_m": 562.0,
   "midpoint_distance_m": 557.0,
   "start_elevation_m": 618.9612493171944,
   "end_elevation_m": 621.1653979874537,
   "start_xy": [
    756456.2646930603,
    6478874.873073346
   ],
   "end_xy": [
    756464.8516408704,
    6478879.79387123
   ]
  },
  "max_20m": {
   "gradient_pct": 21.070156687470103,
   "start_distance_m": 570.0,
   "end_distance_m": 590.0,
   "midpoint_distance_m": 580.0,
   "start_elevation_m": 622.354731427705,
   "end_elevation_m": 626.568762765199,
   "start_xy": [
    756472.83980593,
    6478880.228864313
   ],
   "end_xy": [
    756492.8102185788,
    6478881.31634702
   ]
  },
  "max_25m": {
   "gradient_pct": 20.839158006159323,
   "start_distance_m": 574.0,
   "end_distance_m": 599.0,
   "midpoint_distance_m": 586.5,
   "start_elevation_m": 623.2018206567893,
   "end_elevation_m": 628.4116101583292,
   "start_xy": [
    756476.8338884597,
    6478880.446360854
   ],
   "end_xy": [
    756501.7969042708,
    6478881.805714238
   ]
  },
  "max_50m": {
   "gradient_pct": 20.210381500409767,
   "start_distance_m": 555.0,
   "end_distance_m": 605.0,
   "midpoint_distance_m": 580.0,
   "start_elevation_m": 619.4674227322805,
   "end_elevation_m": 629.5726134824854,
   "start_xy": [
    756458.6842398044,
    6478876.646711853
   ],
   "end_xy": [
    756507.7880280653,
    6478882.13195905
   ]
  },
  "max_100m": {
   "gradient_pct": 17.525551701975587,
   "start_distance_m": 509.0,
   "end_distance_m": 609.0,
   "midpoint_distance_m": 559.0,
   "start_elevation_m": 612.7400911624699,
   "end_elevation_m": 630.2656428644455,
   "start_xy": [
    756420.5694167417,
    6478850.908507781
   ],
   "end_xy": [
    756511.7821105951,
    6478882.349455591
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.497589551760484,
   "start_distance_m": 222.0,
   "end_distance_m": 227.0,
   "midpoint_distance_m": 224.5,
   "start_elevation_m": 593.7754236020219,
   "end_elevation_m": 593.1505441244338,
   "start_xy": [
    756186.6447333046,
    6478687.651430897
   ],
   "end_xy": [
    756190.0839801326,
    6478691.280698215
   ]
  },
  "min_10m": {
   "gradient_pct": -5.846887992800021,
   "start_distance_m": 222.0,
   "end_distance_m": 232.0,
   "midpoint_distance_m": 227.0,
   "start_elevation_m": 593.7754236020219,
   "end_elevation_m": 593.1907348027419,
   "start_xy": [
    756186.6447333046,
    6478687.651430897
   ],
   "end_xy": [
    756193.5232269607,
    6478694.909965531
   ]
  },
  "min_20m": {
   "gradient_pct": -1.8643234825998434,
   "start_distance_m": 213.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 223.0,
   "start_elevation_m": 593.5509522115822,
   "end_elevation_m": 593.1780875150622,
   "start_xy": [
    756179.9943959768,
    6478681.614388032
   ],
   "end_xy": [
    756194.2110763262,
    6478695.635818995
   ]
  },
  "min_25m": {
   "gradient_pct": -0.36173882977846006,
   "start_distance_m": 213.0,
   "end_distance_m": 238.0,
   "midpoint_distance_m": 225.5,
   "start_elevation_m": 593.5509522115822,
   "end_elevation_m": 593.4605175041376,
   "start_xy": [
    756179.9943959768,
    6478681.614388032
   ],
   "end_xy": [
    756197.6503231542,
    6478699.265086311
   ]
  },
  "min_50m": {
   "gradient_pct": 2.1284973270353476,
   "start_distance_m": 213.0,
   "end_distance_m": 263.0,
   "midpoint_distance_m": 238.0,
   "start_elevation_m": 593.5509522115822,
   "end_elevation_m": 594.6152008750998,
   "start_xy": [
    756179.9943959768,
    6478681.614388032
   ],
   "end_xy": [
    756215.6633848054,
    6478716.518203092
   ]
  },
  "min_100m": {
   "gradient_pct": 2.69630265172259,
   "start_distance_m": 1.0,
   "end_distance_m": 101.0,
   "midpoint_distance_m": 51.0,
   "start_elevation_m": 585.5655307686695,
   "end_elevation_m": 588.2618334203921,
   "start_xy": [
    756079.9866085575,
    6478793.633515652
   ],
   "end_xy": [
    756099.0281813483,
    6478710.642674322
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.485199668796213,
   "start_distance_m": 559.0,
   "end_distance_m": 561.0,
   "midpoint_distance_m": 560.0,
   "start_elevation_m": 620.3891924553957,
   "end_elevation_m": 620.9588964487716,
   "start_xy": [
    756462.0660910989,
    6478878.739838898
   ],
   "end_xy": [
    756463.9014455287,
    6478879.534492356
   ]
  },
  "max_3m": {
   "gradient_pct": 27.59628946179949,
   "start_distance_m": 558.0,
   "end_distance_m": 561.0,
   "midpoint_distance_m": 559.5,
   "start_elevation_m": 620.1310077649176,
   "end_elevation_m": 620.9588964487716,
   "start_xy": [
    756461.1484138841,
    6478878.34251217
   ],
   "end_xy": [
    756463.9014455287,
    6478879.534492356
   ]
  }
 },
 "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": {
  "no_bench_suppression": {
   "masked_fraction": 0.05,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.586,
   "obstruction_max_height_m": 27.5,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    170.0,
    200.0
   ]
  ],
  "review": [],
  "extent": [
   "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_E756-N6478_0m5@21LHD4MM-2025-03-12.tif"
  ],
  "calculated_at": "2026-09-22T17:17:06+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": [
   "E756-N6478"
  ],
  "elevation_blocks": [
   "21LHD4MM@2025-03-12"
  ],
  "ign_dalles": [
   "LHD_FXX_0756_6479_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MM"
  ],
  "ign_editions": [
   "2025-03-12"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0756_6479_MNT_O_0M50_LAMB93_IGN69": "2025-03-12"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 31,
   "stations_resolved": 31,
   "width_median_m": 4.25,
   "width_p10_m": 3.25,
   "width_min_m": 2.5,
   "width_max_m": 9.0,
   "bounded_share": 0.581,
   "unbounded_share": 0.419,
   "confidence_median": 0.587,
   "width_median_bounded_m": 4.25,
   "window_m": [
    574.0,
    599.0
   ],
   "width_at_max25_m": 4.0,
   "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": 31,
    "stations_resolved": 31,
    "width_median_m": 3.5,
    "width_p10_m": 0.5,
    "width_min_m": 0.5,
    "width_max_m": 8.25,
    "bounded_share": 1.0,
    "unbounded_share": 0.0,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.5,
    "window_m": [
     574.0,
     599.0
    ],
    "width_at_max25_m": 0.75,
    "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": "Arlanc",
  "county": "Puy-de-D\u00f4me",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}