{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.9945, 3.5181)",
 "slug": "discovered-lane-43-9945-3-5181",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 40.45767344838964,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 138.0,
   "end_distance_m": 140.0,
   "start_elevation_m": 530.8281861122296,
   "end_elevation_m": 531.6373395811974,
   "min_gradient_pct": -17.41531108656318
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.853114026398544,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 138.0,
   "end_distance_m": 141.0,
   "start_elevation_m": 530.8281861122296,
   "end_elevation_m": 531.7837795330215,
   "min_gradient_pct": -8.55451468174048
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.464224385647867,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 138.0,
   "end_distance_m": 143.0,
   "start_elevation_m": 530.8281861122296,
   "end_elevation_m": 532.001397331512,
   "min_gradient_pct": -3.696074001559282
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.312453200856908,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 58.0,
   "end_distance_m": 68.0,
   "start_elevation_m": 519.3885436384885,
   "end_elevation_m": 521.6197889585742,
   "min_gradient_pct": 4.50965532924215
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.290190996726324,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 55.0,
   "end_distance_m": 75.0,
   "start_elevation_m": 518.7969041043898,
   "end_elevation_m": 523.0549423037351,
   "min_gradient_pct": 6.856165855779182
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.600021917118283,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 58.0,
   "end_distance_m": 83.0,
   "start_elevation_m": 519.3885436384885,
   "end_elevation_m": 524.5385491177681,
   "min_gradient_pct": 9.167208148939608
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.705652400849658,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 38.0,
   "end_distance_m": 88.0,
   "start_elevation_m": 516.0580278270304,
   "end_elevation_m": 525.4108540274552,
   "min_gradient_pct": 10.83466416954866
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.22103535195498,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "start_elevation_m": 509.56885455328626,
   "end_elevation_m": 526.7898899052412,
   "min_gradient_pct": 12.664957083529998
  }
 ],
 "shape": {
  "ascent_concentration": 0.311,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 124.0,
  "shape_class": "sustained"
 },
 "length_m": 277.954740465589,
 "start_elevation_m": 509.56885455328626,
 "end_elevation_m": 549.8333793212983,
 "endpoint_gain_m": 40.264524768011995,
 "overall_gradient_pct": 14.486000382856135,
 "accumulated_ascent_m": 40.674780964822446,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.464224385647867,
   "start_distance_m": 138.0,
   "end_distance_m": 143.0,
   "midpoint_distance_m": 140.5,
   "start_elevation_m": 530.8281861122296,
   "end_elevation_m": 532.001397331512,
   "start_xy": [
    741558.7533762354,
    6321843.460833494
   ],
   "end_xy": [
    741559.3378221582,
    6321848.426558311
   ]
  },
  "max_10m": {
   "gradient_pct": 22.312453200856908,
   "start_distance_m": 58.0,
   "end_distance_m": 68.0,
   "midpoint_distance_m": 63.0,
   "start_elevation_m": 519.3885436384885,
   "end_elevation_m": 521.6197889585742,
   "start_xy": [
    741523.7002020169,
    6321774.141103887
   ],
   "end_xy": [
    741528.5442023646,
    6321782.889570074
   ]
  },
  "max_20m": {
   "gradient_pct": 21.290190996726324,
   "start_distance_m": 55.0,
   "end_distance_m": 75.0,
   "midpoint_distance_m": 65.0,
   "start_elevation_m": 518.7969041043898,
   "end_elevation_m": 523.0549423037351,
   "start_xy": [
    741522.2470019126,
    6321771.516564031
   ],
   "end_xy": [
    741531.935002608,
    6321789.013496405
   ]
  },
  "max_25m": {
   "gradient_pct": 20.600021917118283,
   "start_distance_m": 58.0,
   "end_distance_m": 83.0,
   "midpoint_distance_m": 70.5,
   "start_elevation_m": 519.3885436384885,
   "end_elevation_m": 524.5385491177681,
   "start_xy": [
    741523.7002020169,
    6321774.141103887
   ],
   "end_xy": [
    741535.8102028862,
    6321796.012269355
   ]
  },
  "max_50m": {
   "gradient_pct": 18.705652400849658,
   "start_distance_m": 38.0,
   "end_distance_m": 88.0,
   "midpoint_distance_m": 63.0,
   "start_elevation_m": 516.0580278270304,
   "end_elevation_m": 525.4108540274552,
   "start_xy": [
    741514.0122013214,
    6321756.644171513
   ],
   "end_xy": [
    741539.3975247117,
    6321799.447036088
   ]
  },
  "max_100m": {
   "gradient_pct": 17.22103535195498,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 509.56885455328626,
   "end_elevation_m": 526.7898899052412,
   "start_xy": [
    741495.605,
    6321723.4
   ],
   "end_xy": [
    741548.4233847773,
    6321807.354870816
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.696074001559282,
   "start_distance_m": 133.0,
   "end_distance_m": 138.0,
   "midpoint_distance_m": 135.5,
   "start_elevation_m": 531.0129898123075,
   "end_elevation_m": 530.8281861122296,
   "start_xy": [
    741558.1689303125,
    6321838.495108676
   ],
   "end_xy": [
    741558.7533762354,
    6321843.460833494
   ]
  },
  "min_10m": {
   "gradient_pct": 4.50965532924215,
   "start_distance_m": 127.0,
   "end_distance_m": 137.0,
   "midpoint_distance_m": 132.0,
   "start_elevation_m": 530.305535641441,
   "end_elevation_m": 530.7565011743652,
   "start_xy": [
    741557.467595205,
    6321832.536238896
   ],
   "end_xy": [
    741558.6364870508,
    6321842.467688531
   ]
  },
  "min_20m": {
   "gradient_pct": 6.856165855779182,
   "start_distance_m": 118.0,
   "end_distance_m": 138.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 529.4569529410737,
   "end_elevation_m": 530.8281861122296,
   "start_xy": [
    741555.1081326426,
    6321823.908467037
   ],
   "end_xy": [
    741558.7533762354,
    6321843.460833494
   ]
  },
  "min_25m": {
   "gradient_pct": 9.167208148939608,
   "start_distance_m": 225.0,
   "end_distance_m": 250.0,
   "midpoint_distance_m": 237.5,
   "start_elevation_m": 543.696146110261,
   "end_elevation_m": 545.9879481474959,
   "start_xy": [
    741551.8961863216,
    6321929.92259864
   ],
   "end_xy": [
    741549.9279717905,
    6321954.839866094
   ]
  },
  "min_50m": {
   "gradient_pct": 10.83466416954866,
   "start_distance_m": 88.0,
   "end_distance_m": 138.0,
   "midpoint_distance_m": 113.0,
   "start_elevation_m": 525.4108540274552,
   "end_elevation_m": 530.8281861122296,
   "start_xy": [
    741539.3975247117,
    6321799.447036088
   ],
   "end_xy": [
    741558.7533762354,
    6321843.460833494
   ]
  },
  "min_100m": {
   "gradient_pct": 12.664957083529998,
   "start_distance_m": 173.0,
   "end_distance_m": 273.0,
   "midpoint_distance_m": 223.0,
   "start_elevation_m": 536.6306973265209,
   "end_elevation_m": 549.2956544100509,
   "start_xy": [
    741557.0432200207,
    6321878.191129968
   ],
   "end_xy": [
    741549.9803111955,
    6321977.600306047
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 40.45767344838964,
   "start_distance_m": 138.0,
   "end_distance_m": 140.0,
   "midpoint_distance_m": 139.0,
   "start_elevation_m": 530.8281861122296,
   "end_elevation_m": 531.6373395811974,
   "start_xy": [
    741558.7533762354,
    6321843.460833494
   ],
   "end_xy": [
    741558.9871546045,
    6321845.44712342
   ]
  },
  "max_3m": {
   "gradient_pct": 31.853114026398544,
   "start_distance_m": 138.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 139.5,
   "start_elevation_m": 530.8281861122296,
   "end_elevation_m": 531.7837795330215,
   "start_xy": [
    741558.7533762354,
    6321843.460833494
   ],
   "end_xy": [
    741559.1040437891,
    6321846.440268384
   ]
  }
 },
 "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": 0.43,
   "obstruction_max_height_m": 13.13,
   "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": "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-mc5",
   "road_pbf": "block-batch-fr-mc5.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_E741-N6321_0m5@21LHD4MP-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E741-N6322_0m5@21LHD4MP-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T16:23:09+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc5.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc5",
  "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": [
   "E741-N6321",
   "E741-N6322"
  ],
  "elevation_blocks": [
   "21LHD4MP@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0741_6322_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0741_6323_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MP"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0741_6322_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0741_6323_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 18,
   "stations_resolved": 18,
   "width_median_m": 4.88,
   "width_p10_m": 2.7,
   "width_min_m": 1.25,
   "width_max_m": 10.75,
   "bounded_share": 0.222,
   "unbounded_share": 0.778,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.5,
   "window_m": [
    58.0,
    83.0
   ],
   "width_at_max25_m": 5.0,
   "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": 18,
    "stations_resolved": 18,
    "width_median_m": 2.38,
    "width_p10_m": 0.93,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.889,
    "unbounded_share": 0.111,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.25,
    "window_m": [
     58.0,
     83.0
    ],
    "width_at_max25_m": 1.5,
    "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": "Aumessas",
  "county": "Gard",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}