{
 "ocl_version": "0.1.0",
 "name": "Strada di u Cimone",
 "slug": "strada-di-u-cimone",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.09083060581463,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 18.0,
   "end_distance_m": 20.0,
   "start_elevation_m": 324.8535957758102,
   "end_elevation_m": 325.3954123879265,
   "min_gradient_pct": -7.613214336583951
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.26824768055091,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 84.0,
   "end_distance_m": 87.0,
   "start_elevation_m": 334.7559968771519,
   "end_elevation_m": 335.57404430756844,
   "min_gradient_pct": -3.8135186984372162
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.405234432577345,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 83.0,
   "end_distance_m": 88.0,
   "start_elevation_m": 334.50448652722196,
   "end_elevation_m": 335.8247482488508,
   "min_gradient_pct": -3.031149354713989
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.719135757362665,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 80.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 333.8451007742186,
   "end_elevation_m": 336.3170143499549,
   "min_gradient_pct": 0.3436702191419272
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.166462582973736,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 101.0,
   "end_distance_m": 121.0,
   "start_elevation_m": 338.1385392164089,
   "end_elevation_m": 342.57183173300365,
   "min_gradient_pct": 0.5564082640043466
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.22268763155671,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 99.0,
   "end_distance_m": 124.0,
   "start_elevation_m": 337.797996470449,
   "end_elevation_m": 343.10366837833817,
   "min_gradient_pct": 0.6194086185116703
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.639247537278038,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 77.0,
   "end_distance_m": 127.0,
   "start_elevation_m": 333.27756196262345,
   "end_elevation_m": 343.59718573126247,
   "min_gradient_pct": 2.2391281559466734
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.452135480394475,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 39.0,
   "end_distance_m": 139.0,
   "start_elevation_m": 328.25163364228325,
   "end_elevation_m": 345.7037691226777,
   "min_gradient_pct": 5.336698497795737
  }
 ],
 "shape": {
  "ascent_concentration": 0.439,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 89.0,
  "shape_class": "sustained"
 },
 "length_m": 234.41071493688733,
 "start_elevation_m": 323.2411405689737,
 "end_elevation_m": 350.18561297850397,
 "endpoint_gain_m": 26.94447240953025,
 "overall_gradient_pct": 11.494556644641765,
 "accumulated_ascent_m": 27.25630525874857,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.405234432577345,
   "start_distance_m": 83.0,
   "end_distance_m": 88.0,
   "midpoint_distance_m": 85.5,
   "start_elevation_m": 334.50448652722196,
   "end_elevation_m": 335.8247482488508,
   "start_xy": [
    1232524.2223176302,
    6170107.085527306
   ],
   "end_xy": [
    1232519.3404631237,
    6170106.916294552
   ]
  },
  "max_10m": {
   "gradient_pct": 24.719135757362665,
   "start_distance_m": 80.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 85.0,
   "start_elevation_m": 333.8451007742186,
   "end_elevation_m": 336.3170143499549,
   "start_xy": [
    1232527.1939943314,
    6170106.674263907
   ],
   "end_xy": [
    1232517.7452947905,
    6170105.808128937
   ]
  },
  "max_20m": {
   "gradient_pct": 22.166462582973736,
   "start_distance_m": 101.0,
   "end_distance_m": 121.0,
   "midpoint_distance_m": 111.0,
   "start_elevation_m": 338.1385392164089,
   "end_elevation_m": 342.57183173300365,
   "start_xy": [
    1232509.6189397192,
    6170098.437940927
   ],
   "end_xy": [
    1232491.1697700121,
    6170091.48393487
   ]
  },
  "max_25m": {
   "gradient_pct": 21.22268763155671,
   "start_distance_m": 99.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 111.5,
   "start_elevation_m": 337.797996470449,
   "end_elevation_m": 343.10366837833817,
   "start_xy": [
    1232511.2118571065,
    6170099.647326804
   ],
   "end_xy": [
    1232488.5309890017,
    6170090.071503304
   ]
  },
  "max_50m": {
   "gradient_pct": 20.639247537278038,
   "start_distance_m": 77.0,
   "end_distance_m": 127.0,
   "midpoint_distance_m": 102.0,
   "start_elevation_m": 333.27756196262345,
   "end_elevation_m": 343.59718573126247,
   "start_xy": [
    1232530.1417537106,
    6170106.408065357
   ],
   "end_xy": [
    1232486.2382099968,
    6170088.136777372
   ]
  },
  "max_100m": {
   "gradient_pct": 17.452135480394475,
   "start_distance_m": 39.0,
   "end_distance_m": 139.0,
   "midpoint_distance_m": 89.0,
   "start_elevation_m": 328.25163364228325,
   "end_elevation_m": 345.7037691226777,
   "start_xy": [
    1232557.496832023,
    6170130.995857271
   ],
   "end_xy": [
    1232477.0670939763,
    6170080.397873642
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.031149354713989,
   "start_distance_m": 222.0,
   "end_distance_m": 227.0,
   "midpoint_distance_m": 224.5,
   "start_elevation_m": 349.35794846380816,
   "end_elevation_m": 349.20639099607246,
   "start_xy": [
    1232428.0043194692,
    6170013.919032935
   ],
   "end_xy": [
    1232426.034521801,
    6170009.323394008
   ]
  },
  "min_10m": {
   "gradient_pct": 0.3436702191419272,
   "start_distance_m": 217.0,
   "end_distance_m": 227.0,
   "midpoint_distance_m": 222.0,
   "start_elevation_m": 349.17202397415826,
   "end_elevation_m": 349.20639099607246,
   "start_xy": [
    1232429.9741171377,
    6170018.514671861
   ],
   "end_xy": [
    1232426.034521801,
    6170009.323394008
   ]
  },
  "min_20m": {
   "gradient_pct": 0.5564082640043466,
   "start_distance_m": 207.0,
   "end_distance_m": 227.0,
   "midpoint_distance_m": 217.0,
   "start_elevation_m": 349.0951093432716,
   "end_elevation_m": 349.20639099607246,
   "start_xy": [
    1232435.1502083654,
    6170027.004550893
   ],
   "end_xy": [
    1232426.034521801,
    6170009.323394008
   ]
  },
  "min_25m": {
   "gradient_pct": 0.6194086185116703,
   "start_distance_m": 202.0,
   "end_distance_m": 227.0,
   "midpoint_distance_m": 214.5,
   "start_elevation_m": 349.05153884144454,
   "end_elevation_m": 349.20639099607246,
   "start_xy": [
    1232438.0839648328,
    6170031.053386897
   ],
   "end_xy": [
    1232426.034521801,
    6170009.323394008
   ]
  },
  "min_50m": {
   "gradient_pct": 2.2391281559466734,
   "start_distance_m": 177.0,
   "end_distance_m": 227.0,
   "midpoint_distance_m": 202.0,
   "start_elevation_m": 348.0868269180991,
   "end_elevation_m": 349.20639099607246,
   "start_xy": [
    1232452.7527471702,
    6170051.297566918
   ],
   "end_xy": [
    1232426.034521801,
    6170009.323394008
   ]
  },
  "min_100m": {
   "gradient_pct": 5.336698497795737,
   "start_distance_m": 134.0,
   "end_distance_m": 234.0,
   "midpoint_distance_m": 184.0,
   "start_elevation_m": 344.791036016131,
   "end_elevation_m": 350.1277345139267,
   "start_xy": [
    1232480.8883923183,
    6170083.622416862
   ],
   "end_xy": [
    1232423.276805065,
    6170002.889499511
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.09083060581463,
   "start_distance_m": 18.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 19.0,
   "start_elevation_m": 324.8535957758102,
   "end_elevation_m": 325.3954123879265,
   "start_xy": [
    1232571.2585930857,
    6170143.517682825
   ],
   "end_xy": [
    1232569.8305669166,
    6170142.163995749
   ]
  },
  "max_3m": {
   "gradient_pct": 27.26824768055091,
   "start_distance_m": 84.0,
   "end_distance_m": 87.0,
   "midpoint_distance_m": 85.5,
   "start_elevation_m": 334.7559968771519,
   "end_elevation_m": 335.57404430756844,
   "start_xy": [
    1232523.2317587298,
    6170107.222615107
   ],
   "end_xy": [
    1232520.2948650497,
    6170107.2148191985
   ]
  }
 },
 "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": 0.042,
   "obstruction_max_height_m": 6.95,
   "flagged_windows_m": [
    2,
    10
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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-co4",
   "road_pbf": "block-batch-fr-co4.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_E1232-N6169_0m5@21LHDCorseVS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1232-N6170_0m5@21LHDCorseVS-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:19:26+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co4",
  "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": [
   "E1232-N6169",
   "E1232-N6170"
  ],
  "elevation_blocks": [
   "21LHDCorseVS@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1232_6170_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1232_6171_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseVS"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1232_6170_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1232_6171_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 16,
   "stations_resolved": 16,
   "width_median_m": 3.62,
   "width_p10_m": 2.12,
   "width_min_m": 1.75,
   "width_max_m": 9.25,
   "bounded_share": 0.562,
   "unbounded_share": 0.438,
   "confidence_median": 0.597,
   "width_median_bounded_m": 3.25,
   "window_m": [
    99.0,
    124.0
   ],
   "width_at_max25_m": 3.75,
   "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": 16,
    "stations_resolved": 16,
    "width_median_m": 4.38,
    "width_p10_m": 1.62,
    "width_min_m": 1.0,
    "width_max_m": 8.0,
    "bounded_share": 0.938,
    "unbounded_share": 0.062,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.0,
    "window_m": [
     99.0,
     124.0
    ],
    "width_at_max25_m": 4.0,
    "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": "Taglio-Isolaccio",
  "county": "Haute-Corse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}