{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (41.7099, 8.8324)",
 "slug": "discovered-lane-41-7099-8-8324",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.11908692939842,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 297.0,
   "end_distance_m": 299.0,
   "start_elevation_m": 53.67148170078264,
   "end_elevation_m": 54.29386343937061,
   "min_gradient_pct": -3.9685412284065524
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.423115106026955,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 297.0,
   "end_distance_m": 300.0,
   "start_elevation_m": 53.67148170078264,
   "end_elevation_m": 54.61417515396345,
   "min_gradient_pct": -1.919882021214292
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 29.494440219523597,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 294.0,
   "end_distance_m": 299.0,
   "start_elevation_m": 52.81914142839443,
   "end_elevation_m": 54.29386343937061,
   "min_gradient_pct": -1.5006999806847077
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.704681986004186,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 292.0,
   "end_distance_m": 302.0,
   "start_elevation_m": 52.367511070084284,
   "end_elevation_m": 55.1379792686847,
   "min_gradient_pct": 0.7781097195692421
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.322642008915967,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 161.0,
   "end_distance_m": 181.0,
   "start_elevation_m": 25.051886395066813,
   "end_elevation_m": 29.916414796850006,
   "min_gradient_pct": 1.8015219354366743
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.331829651143053,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 169.0,
   "end_distance_m": 194.0,
   "start_elevation_m": 26.641226601094306,
   "end_elevation_m": 32.47418401388007,
   "min_gradient_pct": 2.1084899101584185
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.11503500640979,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 167.0,
   "end_distance_m": 217.0,
   "start_elevation_m": 26.206662376679557,
   "end_elevation_m": 37.76417987988445,
   "min_gradient_pct": 4.5148478097654925
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.065281988228698,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 160.0,
   "end_distance_m": 260.0,
   "start_elevation_m": 24.8380968745199,
   "end_elevation_m": 45.903378862748596,
   "min_gradient_pct": 11.660326633688506
  }
 ],
 "shape": {
  "ascent_concentration": 0.311,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 266.0,
  "shape_class": "sustained"
 },
 "length_m": 307.9999999998429,
 "start_elevation_m": 2.358351283762097,
 "end_elevation_m": 55.900372113348666,
 "endpoint_gain_m": 53.54202082958657,
 "overall_gradient_pct": 17.383772996627886,
 "accumulated_ascent_m": 53.69662010745631,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 29.494440219523597,
   "start_distance_m": 294.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 296.5,
   "start_elevation_m": 52.81914142839443,
   "end_elevation_m": 54.29386343937061,
   "start_xy": [
    1186297.7751161163,
    6085602.813638709
   ],
   "end_xy": [
    1186302.2281982175,
    6085600.54083354
   ]
  },
  "max_10m": {
   "gradient_pct": 27.704681986004186,
   "start_distance_m": 292.0,
   "end_distance_m": 302.0,
   "midpoint_distance_m": 297.0,
   "start_elevation_m": 52.367511070084284,
   "end_elevation_m": 55.1379792686847,
   "start_xy": [
    1186295.9912425764,
    6085603.717959003
   ],
   "end_xy": [
    1186304.8068411439,
    6085599.007666669
   ]
  },
  "max_20m": {
   "gradient_pct": 24.322642008915967,
   "start_distance_m": 161.0,
   "end_distance_m": 181.0,
   "midpoint_distance_m": 171.0,
   "start_elevation_m": 25.051886395066813,
   "end_elevation_m": 29.916414796850006,
   "start_xy": [
    1186168.7508077144,
    6085611.7524563605
   ],
   "end_xy": [
    1186188.4598953861,
    6085615.020906535
   ]
  },
  "max_25m": {
   "gradient_pct": 23.331829651143053,
   "start_distance_m": 169.0,
   "end_distance_m": 194.0,
   "midpoint_distance_m": 181.5,
   "start_elevation_m": 26.641226601094306,
   "end_elevation_m": 32.47418401388007,
   "start_xy": [
    1186176.5600108134,
    6085613.474186793
   ],
   "end_xy": [
    1186201.2980526714,
    6085613.624735549
   ]
  },
  "max_50m": {
   "gradient_pct": 23.11503500640979,
   "start_distance_m": 167.0,
   "end_distance_m": 217.0,
   "midpoint_distance_m": 192.0,
   "start_elevation_m": 26.206662376679557,
   "end_elevation_m": 37.76417987988445,
   "start_xy": [
    1186174.60076156,
    6085613.083430034
   ],
   "end_xy": [
    1186224.2594055522,
    6085612.682372084
   ]
  },
  "max_100m": {
   "gradient_pct": 21.065281988228698,
   "start_distance_m": 160.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 210.0,
   "start_elevation_m": 24.8380968745199,
   "end_elevation_m": 45.903378862748596,
   "start_xy": [
    1186167.7666276507,
    6085611.57528525
   ],
   "end_xy": [
    1186265.3497068211,
    6085612.40445902
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.5006999806847077,
   "start_distance_m": 11.0,
   "end_distance_m": 16.0,
   "midpoint_distance_m": 13.5,
   "start_elevation_m": 2.9306075316341915,
   "end_elevation_m": 2.855572532599956,
   "start_xy": [
    1186031.7088243524,
    6085569.190055755
   ],
   "end_xy": [
    1186036.5202718007,
    6085570.014258081
   ]
  },
  "min_10m": {
   "gradient_pct": 0.7781097195692421,
   "start_distance_m": 10.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 15.0,
   "start_elevation_m": 2.910391480311766,
   "end_elevation_m": 2.9882024522686903,
   "start_xy": [
    1186030.7463020151,
    6085569.400596896
   ],
   "end_xy": [
    1186040.0196881627,
    6085571.909340333
   ]
  },
  "min_20m": {
   "gradient_pct": 1.8015219354366743,
   "start_distance_m": 10.0,
   "end_distance_m": 30.0,
   "midpoint_distance_m": 20.0,
   "start_elevation_m": 2.910391480311766,
   "end_elevation_m": 3.270695867399101,
   "start_xy": [
    1186030.7463020151,
    6085569.400596896
   ],
   "end_xy": [
    1186048.0704184368,
    6085577.767313989
   ]
  },
  "min_25m": {
   "gradient_pct": 2.1084899101584185,
   "start_distance_m": 10.0,
   "end_distance_m": 35.0,
   "midpoint_distance_m": 22.5,
   "start_elevation_m": 2.910391480311766,
   "end_elevation_m": 3.4375139578513707,
   "start_xy": [
    1186030.7463020151,
    6085569.400596896
   ],
   "end_xy": [
    1186052.6831084131,
    6085579.696845327
   ]
  },
  "min_50m": {
   "gradient_pct": 4.5148478097654925,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 2.358351283762097,
   "end_elevation_m": 4.615775188644843,
   "start_xy": [
    1186021.748,
    6085573.763
   ],
   "end_xy": [
    1186066.8442989574,
    6085584.597735301
   ]
  },
  "min_100m": {
   "gradient_pct": 11.660326633688506,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 2.358351283762097,
   "end_elevation_m": 14.018677917450603,
   "start_xy": [
    1186021.748,
    6085573.763
   ],
   "end_xy": [
    1186112.84172864,
    6085600.135465067
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.11908692939842,
   "start_distance_m": 297.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 298.0,
   "start_elevation_m": 53.67148170078264,
   "end_elevation_m": 54.29386343937061,
   "start_xy": [
    1186300.450926426,
    6085601.4571582675
   ],
   "end_xy": [
    1186302.2281982175,
    6085600.54083354
   ]
  },
  "max_3m": {
   "gradient_pct": 31.423115106026955,
   "start_distance_m": 297.0,
   "end_distance_m": 300.0,
   "midpoint_distance_m": 298.5,
   "start_elevation_m": 53.67148170078264,
   "end_elevation_m": 54.61417515396345,
   "start_xy": [
    1186300.450926426,
    6085601.4571582675
   ],
   "end_xy": [
    1186303.0877458595,
    6085600.029777916
   ]
  }
 },
 "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": 0.032,
   "obstruction_max_height_m": 5.03,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "33abfff569d4360542e616d0d42c1b94d0a711fa",
   "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-co1",
   "road_pbf": "block-batch-fr-co1.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": "sha256:2a717d675f2607cc"
  },
  "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_E1186-N6085_0m5@21LHDCorseVU-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:24:54+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co1",
  "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": [
   "E1186-N6085"
  ],
  "elevation_blocks": [
   "21LHDCorseVU@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1186_6086_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseVU"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1186_6086_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "route_summit_trim_m": 26.4,
  "route_summit_trim_loss_m": 4.3,
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 19,
   "stations_resolved": 19,
   "width_median_m": 4.75,
   "width_p10_m": 3.95,
   "width_min_m": 3.75,
   "width_max_m": 12.0,
   "bounded_share": 0.053,
   "unbounded_share": 0.947,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.0,
   "window_m": [
    169.0,
    194.0
   ],
   "width_at_max25_m": 4.75,
   "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": 19,
    "stations_resolved": 19,
    "width_median_m": 4.25,
    "width_p10_m": 2.7,
    "width_min_m": 2.25,
    "width_max_m": 12.0,
    "bounded_share": 0.895,
    "unbounded_share": 0.105,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.0,
    "window_m": [
     169.0,
     194.0
    ],
    "width_at_max25_m": 5.0,
    "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": "Olmeto",
  "county": "Corse-du-Sud",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}