{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.9748, 3.6957)",
 "slug": "discovered-lane-43-9748-3-6957",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.625570959777292,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 1062.0,
   "end_distance_m": 1064.0,
   "start_elevation_m": 283.8313129006342,
   "end_elevation_m": 284.42382431982975,
   "min_gradient_pct": -11.188663399286725,
   "suppressed_max_gradient_pct": 62.76507433379379,
   "suppressed_location_m": [
    19.0,
    21.0
   ],
   "suppressed_min_gradient_pct": -67.0919222006134,
   "suppressed_min_location_m": [
    31.0,
    33.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.80404798727439,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 1063.0,
   "end_distance_m": 1066.0,
   "start_elevation_m": 284.0877625909565,
   "end_elevation_m": 284.98188403057475,
   "min_gradient_pct": -8.960185728269229,
   "suppressed_max_gradient_pct": 61.22687568489482,
   "suppressed_location_m": [
    18.0,
    21.0
   ],
   "suppressed_min_gradient_pct": -46.89148313499724,
   "suppressed_min_location_m": [
    31.0,
    34.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.26979012326865,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 1062.0,
   "end_distance_m": 1067.0,
   "start_elevation_m": 283.8313129006342,
   "end_elevation_m": 285.19480240679763,
   "min_gradient_pct": -2.1741546637986175,
   "suppressed_max_gradient_pct": 49.85789723740254,
   "suppressed_location_m": [
    23.0,
    28.0
   ],
   "suppressed_min_gradient_pct": -36.28454052738164,
   "suppressed_min_location_m": [
    31.0,
    36.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.128712613367497,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 1062.0,
   "end_distance_m": 1072.0,
   "start_elevation_m": 283.8313129006342,
   "end_elevation_m": 285.94418416197095,
   "min_gradient_pct": 0.12415222885323374,
   "suppressed_max_gradient_pct": 36.454517236963966,
   "suppressed_location_m": [
    18.0,
    28.0
   ],
   "suppressed_min_gradient_pct": -11.92339588811734,
   "suppressed_min_location_m": [
    31.0,
    41.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 18.34226615590012,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 835.0,
   "end_distance_m": 855.0,
   "start_elevation_m": 252.11021623324598,
   "end_elevation_m": 255.778669464426,
   "min_gradient_pct": 4.134624574993353,
   "suppressed_max_gradient_pct": 28.867128702021603,
   "suppressed_location_m": [
    11.0,
    31.0
   ],
   "suppressed_min_gradient_pct": 2.3125496212050223,
   "suppressed_min_location_m": [
    31.0,
    51.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.98511265300567,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 835.0,
   "end_distance_m": 860.0,
   "start_elevation_m": 252.11021623324598,
   "end_elevation_m": 256.6064943964974,
   "min_gradient_pct": 4.386023872543433,
   "suppressed_max_gradient_pct": 23.727954602344198,
   "suppressed_location_m": [
    6.0,
    31.0
   ],
   "suppressed_min_gradient_pct": 3.9007927032362204,
   "suppressed_min_location_m": [
    31.0,
    56.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.904394899017575,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 835.0,
   "end_distance_m": 885.0,
   "start_elevation_m": 252.11021623324598,
   "end_elevation_m": 260.56241368275477,
   "min_gradient_pct": 5.685557352242199
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.574196839974688,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 776.0,
   "end_distance_m": 876.0,
   "start_elevation_m": 243.72713419706125,
   "end_elevation_m": 259.30133103703594,
   "min_gradient_pct": 6.609449141830339
  }
 ],
 "shape": {
  "ascent_concentration": 0.296,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 467.0,
  "shape_class": "sustained"
 },
 "length_m": 2188.111526881811,
 "start_elevation_m": 171.3910210682374,
 "end_elevation_m": 417.3529280864563,
 "endpoint_gain_m": 245.9619070182189,
 "overall_gradient_pct": 11.240830460261284,
 "accumulated_ascent_m": 249.20482848540047,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.26979012326865,
   "start_distance_m": 1062.0,
   "end_distance_m": 1067.0,
   "midpoint_distance_m": 1064.5,
   "start_elevation_m": 283.8313129006342,
   "end_elevation_m": 285.19480240679763,
   "start_xy": [
    755498.299980708,
    6319648.65607383
   ],
   "end_xy": [
    755503.2240773836,
    6319648.180905052
   ]
  },
  "max_10m": {
   "gradient_pct": 21.128712613367497,
   "start_distance_m": 1062.0,
   "end_distance_m": 1072.0,
   "midpoint_distance_m": 1067.0,
   "start_elevation_m": 283.8313129006342,
   "end_elevation_m": 285.94418416197095,
   "start_xy": [
    755498.299980708,
    6319648.65607383
   ],
   "end_xy": [
    755508.2198116232,
    6319647.974411935
   ]
  },
  "max_20m": {
   "gradient_pct": 18.34226615590012,
   "start_distance_m": 835.0,
   "end_distance_m": 855.0,
   "midpoint_distance_m": 845.0,
   "start_elevation_m": 252.11021623324598,
   "end_elevation_m": 255.778669464426,
   "start_xy": [
    755382.660350035,
    6319682.126705772
   ],
   "end_xy": [
    755397.9517526611,
    6319695.017516675
   ]
  },
  "max_25m": {
   "gradient_pct": 17.98511265300567,
   "start_distance_m": 835.0,
   "end_distance_m": 860.0,
   "midpoint_distance_m": 847.5,
   "start_elevation_m": 252.11021623324598,
   "end_elevation_m": 256.6064943964974,
   "start_xy": [
    755382.660350035,
    6319682.126705772
   ],
   "end_xy": [
    755401.7746033177,
    6319698.2402194
   ]
  },
  "max_50m": {
   "gradient_pct": 16.904394899017575,
   "start_distance_m": 835.0,
   "end_distance_m": 885.0,
   "midpoint_distance_m": 860.0,
   "start_elevation_m": 252.11021623324598,
   "end_elevation_m": 260.56241368275477,
   "start_xy": [
    755382.660350035,
    6319682.126705772
   ],
   "end_xy": [
    755420.8888566005,
    6319714.353733029
   ]
  },
  "max_100m": {
   "gradient_pct": 15.574196839974688,
   "start_distance_m": 776.0,
   "end_distance_m": 876.0,
   "midpoint_distance_m": 826.0,
   "start_elevation_m": 243.72713419706125,
   "end_elevation_m": 259.30133103703594,
   "start_xy": [
    755370.5980565378,
    6319624.510216997
   ],
   "end_xy": [
    755414.0077254187,
    6319708.552868122
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.1741546637986175,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 171.3910210682374,
   "end_elevation_m": 171.28231333504746,
   "start_xy": [
    755511.357,
    6319284.369
   ],
   "end_xy": [
    755514.396763619,
    6319288.338866136
   ]
  },
  "min_10m": {
   "gradient_pct": 0.12415222885323374,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 171.3910210682374,
   "end_elevation_m": 171.40343629112272,
   "start_xy": [
    755511.357,
    6319284.369
   ],
   "end_xy": [
    755517.393607418,
    6319292.341159111
   ]
  },
  "min_20m": {
   "gradient_pct": 4.134624574993353,
   "start_distance_m": 457.0,
   "end_distance_m": 477.0,
   "midpoint_distance_m": 467.0,
   "start_elevation_m": 211.83681799509145,
   "end_elevation_m": 212.66374291009012,
   "start_xy": [
    755538.7788471412,
    6319392.343007357
   ],
   "end_xy": [
    755547.5922190514,
    6319403.493895116
   ]
  },
  "min_25m": {
   "gradient_pct": 4.386023872543433,
   "start_distance_m": 459.0,
   "end_distance_m": 484.0,
   "midpoint_distance_m": 471.5,
   "start_elevation_m": 211.94476245376137,
   "end_elevation_m": 213.04126842189723,
   "start_xy": [
    755540.2499863844,
    6319391.575680028
   ],
   "end_xy": [
    755542.0360818903,
    6319407.652966942
   ]
  },
  "min_50m": {
   "gradient_pct": 5.685557352242199,
   "start_distance_m": 443.0,
   "end_distance_m": 493.0,
   "midpoint_distance_m": 468.0,
   "start_elevation_m": 210.9114476967639,
   "end_elevation_m": 213.754226372885,
   "start_xy": [
    755529.8528436703,
    6319403.128481942
   ],
   "end_xy": [
    755534.7161727212,
    6319412.889275732
   ]
  },
  "min_100m": {
   "gradient_pct": 6.609449141830339,
   "start_distance_m": 387.0,
   "end_distance_m": 487.0,
   "midpoint_distance_m": 437.0,
   "start_elevation_m": 206.64770646535402,
   "end_elevation_m": 213.25715560718436,
   "start_xy": [
    755477.5365231156,
    6319423.037214782
   ],
   "end_xy": [
    755539.5961121672,
    6319409.398403205
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.625570959777292,
   "start_distance_m": 1062.0,
   "end_distance_m": 1064.0,
   "midpoint_distance_m": 1063.0,
   "start_elevation_m": 283.8313129006342,
   "end_elevation_m": 284.42382431982975,
   "start_xy": [
    755498.299980708,
    6319648.65607383
   ],
   "end_xy": [
    755500.2266368399,
    6319648.304800923
   ]
  },
  "max_3m": {
   "gradient_pct": 29.80404798727439,
   "start_distance_m": 1063.0,
   "end_distance_m": 1066.0,
   "midpoint_distance_m": 1064.5,
   "start_elevation_m": 284.0877625909565,
   "end_elevation_m": 284.98188403057475,
   "start_xy": [
    755499.227489992,
    6319648.346099547
   ],
   "end_xy": [
    755502.2249305358,
    6319648.222203676
   ]
  }
 },
 "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": 0.009,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.332,
   "obstruction_max_height_m": 22.91,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    17.0,
    35.0
   ]
  ],
  "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-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_E755-N6319_0m5@21LHD4MP-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E756-N6319_0m5@21LHD4MP-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T17:17:11+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": [
   "E755-N6319",
   "E756-N6319"
  ],
  "elevation_blocks": [
   "21LHD4MP@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0755_6320_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0756_6320_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MP"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0755_6320_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0756_6320_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 93,
   "stations_resolved": 93,
   "width_median_m": 5.0,
   "width_p10_m": 3.25,
   "width_min_m": 1.25,
   "width_max_m": 12.0,
   "bounded_share": 0.527,
   "unbounded_share": 0.473,
   "confidence_median": 0.531,
   "width_median_bounded_m": 5.25,
   "window_m": [
    835.0,
    860.0
   ],
   "width_at_max25_m": 4.62,
   "window_stations": 6,
   "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": 93,
    "stations_resolved": 93,
    "width_median_m": 2.75,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.946,
    "unbounded_share": 0.054,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     835.0,
     860.0
    ],
    "width_at_max25_m": 2.88,
    "window_stations": 6,
    "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-Julien-de-la-Nef",
  "county": "Gard",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}