{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (48.5153, 0.5438)",
 "slug": "discovered-lane-48-5153-0-5438",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 34.90217615705831,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 838.0,
   "end_distance_m": 840.0,
   "start_elevation_m": 240.65053061130456,
   "end_elevation_m": 241.34857413444573,
   "min_gradient_pct": -15.88914608082348,
   "suppressed_max_gradient_pct": 61.127652891590856,
   "suppressed_location_m": [
    899.0,
    901.0
   ],
   "suppressed_min_gradient_pct": -32.10229374619331,
   "suppressed_min_location_m": [
    901.0,
    903.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 30.305519695783307,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 853.0,
   "end_distance_m": 856.0,
   "start_elevation_m": 243.36519179082586,
   "end_elevation_m": 244.27435738169936,
   "min_gradient_pct": -10.08980810617667,
   "suppressed_max_gradient_pct": 43.86885577397379,
   "suppressed_location_m": [
    898.0,
    901.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.082474154198167,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 837.0,
   "end_distance_m": 842.0,
   "start_elevation_m": 240.5088122214763,
   "end_elevation_m": 241.7629359291862,
   "min_gradient_pct": -4.78675809581091,
   "suppressed_max_gradient_pct": 31.076895791422885,
   "suppressed_location_m": [
    896.0,
    901.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.8735464514358,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 853.0,
   "end_distance_m": 863.0,
   "start_elevation_m": 243.36519179082586,
   "end_elevation_m": 245.65254643596944,
   "min_gradient_pct": -0.5531974431158915
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.564065398206566,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 822.0,
   "end_distance_m": 842.0,
   "start_elevation_m": 237.65012284954489,
   "end_elevation_m": 241.7629359291862,
   "min_gradient_pct": 0.7941312024006209
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.008063298659522,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 838.0,
   "end_distance_m": 863.0,
   "start_elevation_m": 240.65053061130456,
   "end_elevation_m": 245.65254643596944,
   "min_gradient_pct": 0.9814158862942577
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.039080828941223,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 815.0,
   "end_distance_m": 865.0,
   "start_elevation_m": 236.6028243638632,
   "end_elevation_m": 246.1223647783338,
   "min_gradient_pct": 1.0828383651245304
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.685105068330415,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 779.0,
   "end_distance_m": 879.0,
   "start_elevation_m": 231.99362369750037,
   "end_elevation_m": 247.67872876583078,
   "min_gradient_pct": 1.363723939496424,
   "suppressed_max_gradient_pct": 16.113894419942568,
   "suppressed_location_m": [
    801.0,
    901.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.48,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 100.0,
  "shape_class": "stepped"
 },
 "length_m": 952.5000000002174,
 "start_elevation_m": 193.35512249755703,
 "end_elevation_m": 253.57793811548575,
 "endpoint_gain_m": 60.22281561792872,
 "overall_gradient_pct": 6.322605314216795,
 "accumulated_ascent_m": 62.21281495945425,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.082474154198167,
   "start_distance_m": 837.0,
   "end_distance_m": 842.0,
   "midpoint_distance_m": 839.5,
   "start_elevation_m": 240.5088122214763,
   "end_elevation_m": 241.7629359291862,
   "start_xy": [
    518562.4722245849,
    6827183.022007407
   ],
   "end_xy": [
    518563.80907465017,
    6827187.839976916
   ]
  },
  "max_10m": {
   "gradient_pct": 22.8735464514358,
   "start_distance_m": 853.0,
   "end_distance_m": 863.0,
   "midpoint_distance_m": 858.0,
   "start_elevation_m": 243.36519179082586,
   "end_elevation_m": 245.65254643596944,
   "start_xy": [
    518566.75072440784,
    6827198.439349383
   ],
   "end_xy": [
    518568.4202578511,
    6827208.279918149
   ]
  },
  "max_20m": {
   "gradient_pct": 20.564065398206566,
   "start_distance_m": 822.0,
   "end_distance_m": 842.0,
   "midpoint_distance_m": 832.0,
   "start_elevation_m": 237.65012284954489,
   "end_elevation_m": 241.7629359291862,
   "start_xy": [
    518558.4797429085,
    6827168.563097003
   ],
   "end_xy": [
    518563.80907465017,
    6827187.839976916
   ]
  },
  "max_25m": {
   "gradient_pct": 20.008063298659522,
   "start_distance_m": 838.0,
   "end_distance_m": 863.0,
   "midpoint_distance_m": 850.5,
   "start_elevation_m": 240.65053061130456,
   "end_elevation_m": 245.65254643596944,
   "start_xy": [
    518562.7393838292,
    6827183.985659655
   ],
   "end_xy": [
    518568.4202578511,
    6827208.279918149
   ]
  },
  "max_50m": {
   "gradient_pct": 19.039080828941223,
   "start_distance_m": 815.0,
   "end_distance_m": 865.0,
   "midpoint_distance_m": 840.0,
   "start_elevation_m": 236.6028243638632,
   "end_elevation_m": 246.1223647783338,
   "start_xy": [
    518556.61658479285,
    6827161.815605481
   ],
   "end_xy": [
    518568.6823271162,
    6827210.262673732
   ]
  },
  "max_100m": {
   "gradient_pct": 15.685105068330415,
   "start_distance_m": 779.0,
   "end_distance_m": 879.0,
   "midpoint_distance_m": 829.0,
   "start_elevation_m": 231.99362369750037,
   "end_elevation_m": 247.67872876583078,
   "start_xy": [
    518564.6488538205,
    6827132.4651677795
   ],
   "end_xy": [
    518571.5261980575,
    6827223.850596243
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.78675809581091,
   "start_distance_m": 549.0,
   "end_distance_m": 554.0,
   "midpoint_distance_m": 551.5,
   "start_elevation_m": 215.03373601318663,
   "end_elevation_m": 214.79439810839608,
   "start_xy": [
    518620.9146304941,
    6826939.105862845
   ],
   "end_xy": [
    518621.8633495577,
    6826944.015031016
   ]
  },
  "min_10m": {
   "gradient_pct": -0.5531974431158915,
   "start_distance_m": 549.0,
   "end_distance_m": 559.0,
   "midpoint_distance_m": 554.0,
   "start_elevation_m": 215.03373601318663,
   "end_elevation_m": 214.97841626887504,
   "start_xy": [
    518620.9146304941,
    6826939.105862845
   ],
   "end_xy": [
    518622.8120686213,
    6826948.924199188
   ]
  },
  "min_20m": {
   "gradient_pct": 0.7941312024006209,
   "start_distance_m": 7.0,
   "end_distance_m": 27.0,
   "midpoint_distance_m": 17.0,
   "start_elevation_m": 193.4645018129291,
   "end_elevation_m": 193.6233280534092,
   "start_xy": [
    518599.2990406805,
    6826420.4048164785
   ],
   "end_xy": [
    518605.50201405335,
    6826439.418577846
   ]
  },
  "min_25m": {
   "gradient_pct": 0.9814158862942577,
   "start_distance_m": 2.0,
   "end_distance_m": 27.0,
   "midpoint_distance_m": 14.5,
   "start_elevation_m": 193.37797408183565,
   "end_elevation_m": 193.6233280534092,
   "start_xy": [
    518597.7482973373,
    6826415.651376137
   ],
   "end_xy": [
    518605.50201405335,
    6826439.418577846
   ]
  },
  "min_50m": {
   "gradient_pct": 1.0828383651245304,
   "start_distance_m": 7.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 32.0,
   "start_elevation_m": 193.4645018129291,
   "end_elevation_m": 194.00592099549135,
   "start_xy": [
    518599.2990406805,
    6826420.4048164785
   ],
   "end_xy": [
    518613.8361501237,
    6826468.227785585
   ]
  },
  "min_100m": {
   "gradient_pct": 1.363723939496424,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 193.35512249755703,
   "end_elevation_m": 194.71884643705346,
   "start_xy": [
    518597.128,
    6826413.75
   ],
   "end_xy": [
    518625.1077776624,
    6826509.724149114
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 34.90217615705831,
   "start_distance_m": 838.0,
   "end_distance_m": 840.0,
   "midpoint_distance_m": 839.0,
   "start_elevation_m": 240.65053061130456,
   "end_elevation_m": 241.34857413444573,
   "start_xy": [
    518562.7393838292,
    6827183.985659655
   ],
   "end_xy": [
    518563.2742292397,
    6827185.912818286
   ]
  },
  "max_3m": {
   "gradient_pct": 30.305519695783307,
   "start_distance_m": 853.0,
   "end_distance_m": 856.0,
   "midpoint_distance_m": 854.5,
   "start_elevation_m": 243.36519179082586,
   "end_elevation_m": 244.27435738169936,
   "start_xy": [
    518566.75072440784,
    6827198.439349383
   ],
   "end_xy": [
    518567.5030154231,
    6827201.34027361
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.008,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.309,
   "obstruction_max_height_m": 23.68,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    897.0,
    904.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "11607044e533e467c5c753c7fffd2d09371a473e",
   "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-no6",
   "road_pbf": "block-batch-fr-no6.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": "sha256:396cc16291f947a7"
  },
  "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_E518-N6826_0m5@23LHD3HF-2024-12-16.tif",
   "data/cache/fr/ign-lidarhd_dtm_E518-N6827_0m5@23LHD3HF-2024-12-16.tif"
  ],
  "calculated_at": "2026-09-26T01:04:21+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-no6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-no6",
  "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": [
   "E518-N6826",
   "E518-N6827"
  ],
  "elevation_blocks": [
   "23LHD3HF@2024-12-16"
  ],
  "ign_dalles": [
   "LHD_FXX_0518_6827_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0518_6828_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "23LHD3HF"
  ],
  "ign_editions": [
   "2024-12-16"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0518_6827_MNT_O_0M50_LAMB93_IGN69": "2024-12-16",
   "LHD_FXX_0518_6828_MNT_O_0M50_LAMB93_IGN69": "2024-12-16"
  },
  "route_cut_m": 952.5,
  "climb_origin": "discovered",
  "structure_own_ways": 4,
  "carriageway": {
   "stations": 45,
   "stations_resolved": 45,
   "width_median_m": 4.75,
   "width_p10_m": 2.25,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.267,
   "unbounded_share": 0.733,
   "confidence_median": 0.0,
   "width_median_bounded_m": 2.5,
   "window_m": [
    838.0,
    863.0
   ],
   "width_at_max25_m": 3.0,
   "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": 45,
    "stations_resolved": 45,
    "width_median_m": 3.25,
    "width_p10_m": 1.1,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.778,
    "unbounded_share": 0.222,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.5,
    "window_m": [
     838.0,
     863.0
    ],
    "width_at_max25_m": 1.75,
    "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": "Saint-Langis-l\u00e8s-Mortagne",
  "county": "Orne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}