{
 "ocl_version": "0.1.0",
 "name": "Route de Mazulellu",
 "slug": "route-de-mazulellu",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 32.95533557188186,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 273.0,
   "end_distance_m": 275.0,
   "start_elevation_m": 39.92202631391736,
   "end_elevation_m": 40.581133025354994,
   "min_gradient_pct": -0.8976157702076826
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.951584279566628,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 494.0,
   "end_distance_m": 497.0,
   "start_elevation_m": 71.45218694900532,
   "end_elevation_m": 72.35073447739232,
   "min_gradient_pct": -0.6158725634772821
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.850924044040482,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 492.0,
   "end_distance_m": 497.0,
   "start_elevation_m": 70.9081882751903,
   "end_elevation_m": 72.35073447739232,
   "min_gradient_pct": -0.12222440667944312
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.42146380240726,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 489.0,
   "end_distance_m": 499.0,
   "start_elevation_m": 70.1344467097492,
   "end_elevation_m": 72.87659308998992,
   "min_gradient_pct": 2.5249841371575066
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.129238754820893,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 481.0,
   "end_distance_m": 501.0,
   "start_elevation_m": 68.16590006496521,
   "end_elevation_m": 73.39174781592939,
   "min_gradient_pct": 3.370637889720385
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.402220883059385,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 482.0,
   "end_distance_m": 507.0,
   "start_elevation_m": 68.39459922998826,
   "end_elevation_m": 74.7451544507531,
   "min_gradient_pct": 3.517461650070743
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.532037812858476,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 463.0,
   "end_distance_m": 513.0,
   "start_elevation_m": 64.1988427643015,
   "end_elevation_m": 75.96486167073074,
   "min_gradient_pct": 4.574818674317328
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.691353217321925,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 430.0,
   "end_distance_m": 530.0,
   "start_elevation_m": 58.155467400562436,
   "end_elevation_m": 78.84682061788436,
   "min_gradient_pct": 6.041150978131634
  }
 ],
 "shape": {
  "ascent_concentration": 0.373,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 143.0,
  "shape_class": "sustained"
 },
 "length_m": 532.5067939959682,
 "start_elevation_m": 12.025879126786057,
 "end_elevation_m": 79.04693563867693,
 "endpoint_gain_m": 67.02105651189088,
 "overall_gradient_pct": 12.585953318822504,
 "accumulated_ascent_m": 67.06024250701859,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.850924044040482,
   "start_distance_m": 492.0,
   "end_distance_m": 497.0,
   "midpoint_distance_m": 494.5,
   "start_elevation_m": 70.9081882751903,
   "end_elevation_m": 72.35073447739232,
   "start_xy": [
    1181286.4586714557,
    6103664.232707557
   ],
   "end_xy": [
    1181291.4574624514,
    6103664.122759475
   ]
  },
  "max_10m": {
   "gradient_pct": 27.42146380240726,
   "start_distance_m": 489.0,
   "end_distance_m": 499.0,
   "midpoint_distance_m": 494.0,
   "start_elevation_m": 70.1344467097492,
   "end_elevation_m": 72.87659308998992,
   "start_xy": [
    1181283.4593968582,
    6103664.298676406
   ],
   "end_xy": [
    1181293.4569788498,
    6103664.078780243
   ]
  },
  "max_20m": {
   "gradient_pct": 26.129238754820893,
   "start_distance_m": 481.0,
   "end_distance_m": 501.0,
   "midpoint_distance_m": 491.0,
   "start_elevation_m": 68.16590006496521,
   "end_elevation_m": 73.39174781592939,
   "start_xy": [
    1181275.461331265,
    6103664.474593337
   ],
   "end_xy": [
    1181295.456495248,
    6103664.03480101
   ]
  },
  "max_25m": {
   "gradient_pct": 25.402220883059385,
   "start_distance_m": 482.0,
   "end_distance_m": 507.0,
   "midpoint_distance_m": 494.5,
   "start_elevation_m": 68.39459922998826,
   "end_elevation_m": 74.7451544507531,
   "start_xy": [
    1181276.4610894641,
    6103664.45260372
   ],
   "end_xy": [
    1181301.455044443,
    6103663.9028633125
   ]
  },
  "max_50m": {
   "gradient_pct": 23.532037812858476,
   "start_distance_m": 463.0,
   "end_distance_m": 513.0,
   "midpoint_distance_m": 488.0,
   "start_elevation_m": 64.1988427643015,
   "end_elevation_m": 75.96486167073074,
   "start_xy": [
    1181257.468378679,
    6103664.970215984
   ],
   "end_xy": [
    1181307.453593638,
    6103663.770925614
   ]
  },
  "max_100m": {
   "gradient_pct": 20.691353217321925,
   "start_distance_m": 430.0,
   "end_distance_m": 530.0,
   "midpoint_distance_m": 480.0,
   "start_elevation_m": 58.155467400562436,
   "end_elevation_m": 78.84682061788436,
   "start_xy": [
    1181224.5272096645,
    6103665.039994025
   ],
   "end_xy": [
    1181323.9141016956,
    6103661.11175647
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.12222440667944312,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 12.025879126786057,
   "end_elevation_m": 12.019767906452085,
   "start_xy": [
    1180853.486,
    6103463.491
   ],
   "end_xy": [
    1180857.614149162,
    6103466.312060881
   ]
  },
  "min_10m": {
   "gradient_pct": 2.5249841371575066,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 12.025879126786057,
   "end_elevation_m": 12.278377540501808,
   "start_xy": [
    1180853.486,
    6103463.491
   ],
   "end_xy": [
    1180861.7422983244,
    6103469.133121762
   ]
  },
  "min_20m": {
   "gradient_pct": 3.370637889720385,
   "start_distance_m": 300.0,
   "end_distance_m": 320.0,
   "midpoint_distance_m": 310.0,
   "start_elevation_m": 43.893003206183636,
   "end_elevation_m": 44.56713078412771,
   "start_xy": [
    1181107.3405232404,
    6103622.71174857
   ],
   "end_xy": [
    1181121.4964409333,
    6103636.84008868
   ]
  },
  "min_25m": {
   "gradient_pct": 3.517461650070743,
   "start_distance_m": 299.0,
   "end_distance_m": 324.0,
   "midpoint_distance_m": 311.5,
   "start_elevation_m": 43.871354737533416,
   "end_elevation_m": 44.7507201500511,
   "start_xy": [
    1181106.632727356,
    6103622.005331565
   ],
   "end_xy": [
    1181124.3276244719,
    6103639.665756702
   ]
  },
  "min_50m": {
   "gradient_pct": 4.574818674317328,
   "start_distance_m": 295.0,
   "end_distance_m": 345.0,
   "midpoint_distance_m": 320.0,
   "start_elevation_m": 43.663204945795144,
   "end_elevation_m": 45.95061428295381,
   "start_xy": [
    1181103.7890771863,
    6103619.195453968
   ],
   "end_xy": [
    1181141.1898116586,
    6103651.955117152
   ]
  },
  "min_100m": {
   "gradient_pct": 6.041150978131634,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 12.025879126786057,
   "end_elevation_m": 18.06703010491769,
   "start_xy": [
    1180853.486,
    6103463.491
   ],
   "end_xy": [
    1180937.7905009836,
    6103517.208748088
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 32.95533557188186,
   "start_distance_m": 273.0,
   "end_distance_m": 275.0,
   "midpoint_distance_m": 274.0,
   "start_elevation_m": 39.92202631391736,
   "end_elevation_m": 40.581133025354994,
   "start_xy": [
    1181085.058825121,
    6103607.655191511
   ],
   "end_xy": [
    1181086.7615753089,
    6103608.70430628
   ]
  },
  "max_3m": {
   "gradient_pct": 29.951584279566628,
   "start_distance_m": 494.0,
   "end_distance_m": 497.0,
   "midpoint_distance_m": 495.5,
   "start_elevation_m": 71.45218694900532,
   "end_elevation_m": 72.35073447739232,
   "start_xy": [
    1181288.4581878542,
    6103664.188728324
   ],
   "end_xy": [
    1181291.4574624514,
    6103664.122759475
   ]
  }
 },
 "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": 0.092,
   "obstruction_max_height_m": 6.42,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50
   ]
  },
  "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_E1180-N6103_0m5@21LHDCorseUT-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1181-N6103_0m5@21LHDCorseUT-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:21:15+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": [
   "E1180-N6103",
   "E1181-N6103"
  ],
  "elevation_blocks": [
   "21LHDCorseUT@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1180_6104_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1181_6104_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseUT"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1180_6104_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1181_6104_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 28,
   "stations_resolved": 28,
   "width_median_m": 5.38,
   "width_p10_m": 3.42,
   "width_min_m": 1.75,
   "width_max_m": 12.0,
   "bounded_share": 0.25,
   "unbounded_share": 0.75,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.5,
   "window_m": [
    482.0,
    507.0
   ],
   "width_at_max25_m": 6.0,
   "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": 28,
    "stations_resolved": 28,
    "width_median_m": 3.25,
    "width_p10_m": 1.43,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.893,
    "unbounded_share": 0.107,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.0,
    "window_m": [
     482.0,
     507.0
    ],
    "width_at_max25_m": 2.0,
    "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": "Grosseto-Prugna",
  "county": "Corse-du-Sud",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}