{
 "ocl_version": "0.1.0",
 "name": "Strittonu di Carpalonu",
 "slug": "strittonu-di-carpalonu",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.54986167288962,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 413.0,
   "end_distance_m": 415.0,
   "start_elevation_m": 66.48818801093924,
   "end_elevation_m": 67.03918524439703,
   "min_gradient_pct": -3.2290524586088054
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.567863459162783,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 412.0,
   "end_distance_m": 415.0,
   "start_elevation_m": 66.24214934062215,
   "end_elevation_m": 67.03918524439703,
   "min_gradient_pct": -2.2055058080693377
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.938287063087273,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 410.0,
   "end_distance_m": 415.0,
   "start_elevation_m": 65.74227089124267,
   "end_elevation_m": 67.03918524439703,
   "min_gradient_pct": -1.2395306440474485
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.083453411022134,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 407.0,
   "end_distance_m": 417.0,
   "start_elevation_m": 65.0200504197987,
   "end_elevation_m": 67.5283957609009,
   "min_gradient_pct": -0.5201867606093202
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.57367331842761,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 402.0,
   "end_distance_m": 422.0,
   "start_elevation_m": 63.76545414950583,
   "end_elevation_m": 68.68018881319135,
   "min_gradient_pct": -0.1752093563251833
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.050913967372708,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 402.0,
   "end_distance_m": 427.0,
   "start_elevation_m": 63.76545414950583,
   "end_elevation_m": 69.778182641349,
   "min_gradient_pct": -0.08242173375037964
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.82779652149671,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 379.0,
   "end_distance_m": 429.0,
   "start_elevation_m": 58.777961658124624,
   "end_elevation_m": 70.19185991887298,
   "min_gradient_pct": 0.23511190342526334
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.063334769847167,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 323.0,
   "end_distance_m": 423.0,
   "start_elevation_m": 47.85230822790677,
   "end_elevation_m": 68.91564299775393,
   "min_gradient_pct": 1.3756562630692206
  }
 ],
 "shape": {
  "ascent_concentration": 0.402,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 248.0,
  "shape_class": "sustained"
 },
 "length_m": 607.0181542563267,
 "start_elevation_m": 19.30164550073784,
 "end_elevation_m": 95.50653160626476,
 "endpoint_gain_m": 76.20488610552692,
 "overall_gradient_pct": 12.553971503354369,
 "accumulated_ascent_m": 76.46000544439815,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.938287063087273,
   "start_distance_m": 410.0,
   "end_distance_m": 415.0,
   "midpoint_distance_m": 412.5,
   "start_elevation_m": 65.74227089124267,
   "end_elevation_m": 67.03918524439703,
   "start_xy": [
    1225473.1228127433,
    6078334.48282097
   ],
   "end_xy": [
    1225468.292433373,
    6078333.1915289285
   ]
  },
  "max_10m": {
   "gradient_pct": 25.083453411022134,
   "start_distance_m": 407.0,
   "end_distance_m": 417.0,
   "midpoint_distance_m": 412.0,
   "start_elevation_m": 65.0200504197987,
   "end_elevation_m": 67.5283957609009,
   "start_xy": [
    1225476.068221088,
    6078334.188275346
   ],
   "end_xy": [
    1225466.3602816248,
    6078332.675012112
   ]
  },
  "max_20m": {
   "gradient_pct": 24.57367331842761,
   "start_distance_m": 402.0,
   "end_distance_m": 422.0,
   "midpoint_distance_m": 412.0,
   "start_elevation_m": 63.76545414950583,
   "end_elevation_m": 68.68018881319135,
   "start_xy": [
    1225480.993557523,
    6078333.327426345
   ],
   "end_xy": [
    1225461.5299022545,
    6078331.383720069
   ]
  },
  "max_25m": {
   "gradient_pct": 24.050913967372708,
   "start_distance_m": 402.0,
   "end_distance_m": 427.0,
   "midpoint_distance_m": 414.5,
   "start_elevation_m": 63.76545414950583,
   "end_elevation_m": 69.778182641349,
   "start_xy": [
    1225480.993557523,
    6078333.327426345
   ],
   "end_xy": [
    1225456.699522884,
    6078330.092428027
   ]
  },
  "max_50m": {
   "gradient_pct": 22.82779652149671,
   "start_distance_m": 379.0,
   "end_distance_m": 429.0,
   "midpoint_distance_m": 404.0,
   "start_elevation_m": 58.777961658124624,
   "end_elevation_m": 70.19185991887298,
   "start_xy": [
    1225501.658645483,
    6078325.578403478
   ],
   "end_xy": [
    1225454.7673711358,
    6078329.57591121
   ]
  },
  "max_100m": {
   "gradient_pct": 21.063334769847167,
   "start_distance_m": 323.0,
   "end_distance_m": 423.0,
   "midpoint_distance_m": 373.0,
   "start_elevation_m": 47.85230822790677,
   "end_elevation_m": 68.91564299775393,
   "start_xy": [
    1225542.1287341581,
    6078362.023001882
   ],
   "end_xy": [
    1225460.5638263803,
    6078331.12546166
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.2395306440474485,
   "start_distance_m": 27.0,
   "end_distance_m": 32.0,
   "midpoint_distance_m": 29.5,
   "start_elevation_m": 19.37477099281229,
   "end_elevation_m": 19.31279446060992,
   "start_xy": [
    1225742.9825928982,
    6078519.476841703
   ],
   "end_xy": [
    1225743.344554546,
    6078514.489960537
   ]
  },
  "min_10m": {
   "gradient_pct": -0.5201867606093202,
   "start_distance_m": 27.0,
   "end_distance_m": 37.0,
   "midpoint_distance_m": 32.0,
   "start_elevation_m": 19.37477099281229,
   "end_elevation_m": 19.32275231675136,
   "start_xy": [
    1225742.9825928982,
    6078519.476841703
   ],
   "end_xy": [
    1225743.706516194,
    6078509.503079371
   ]
  },
  "min_20m": {
   "gradient_pct": -0.1752093563251833,
   "start_distance_m": 18.0,
   "end_distance_m": 38.0,
   "midpoint_distance_m": 28.0,
   "start_elevation_m": 19.360392086046804,
   "end_elevation_m": 19.325350214781768,
   "start_xy": [
    1225742.3310619323,
    6078528.453227802
   ],
   "end_xy": [
    1225743.7789085235,
    6078508.505703137
   ]
  },
  "min_25m": {
   "gradient_pct": -0.08242173375037964,
   "start_distance_m": 18.0,
   "end_distance_m": 43.0,
   "midpoint_distance_m": 30.5,
   "start_elevation_m": 19.360392086046804,
   "end_elevation_m": 19.33978665260921,
   "start_xy": [
    1225742.3310619323,
    6078528.453227802
   ],
   "end_xy": [
    1225744.1408701714,
    6078503.5188219715
   ]
  },
  "min_50m": {
   "gradient_pct": 0.23511190342526334,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 19.30164550073784,
   "end_elevation_m": 19.419201452450473,
   "start_xy": [
    1225741.028,
    6078546.406
   ],
   "end_xy": [
    1225744.9216797675,
    6078496.565867523
   ]
  },
  "min_100m": {
   "gradient_pct": 1.3756562630692206,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 19.30164550073784,
   "end_elevation_m": 20.677301763807062,
   "start_xy": [
    1225741.028,
    6078546.406
   ],
   "end_xy": [
    1225747.6780650988,
    6078447.968896682
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.54986167288962,
   "start_distance_m": 413.0,
   "end_distance_m": 415.0,
   "midpoint_distance_m": 414.0,
   "start_elevation_m": 66.48818801093924,
   "end_elevation_m": 67.03918524439703,
   "start_xy": [
    1225470.224585121,
    6078333.708045745
   ],
   "end_xy": [
    1225468.292433373,
    6078333.1915289285
   ]
  },
  "max_3m": {
   "gradient_pct": 26.567863459162783,
   "start_distance_m": 412.0,
   "end_distance_m": 415.0,
   "midpoint_distance_m": 413.5,
   "start_elevation_m": 66.24214934062215,
   "end_elevation_m": 67.03918524439703,
   "start_xy": [
    1225471.1906609952,
    6078333.966304153
   ],
   "end_xy": [
    1225468.292433373,
    6078333.1915289285
   ]
  }
 },
 "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": 0.246,
   "obstruction_max_height_m": 9.61,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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-co3",
   "road_pbf": "block-batch-fr-co3.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_E1225-N6078_0m5@21LHDCorseVU-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:49:46+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co3",
  "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": [
   "E1225-N6078"
  ],
  "elevation_blocks": [
   "21LHDCorseVU@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1225_6079_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseVU"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1225_6079_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 31,
   "stations_resolved": 31,
   "width_median_m": 5.75,
   "width_p10_m": 4.0,
   "width_min_m": 3.5,
   "width_max_m": 12.0,
   "bounded_share": 0.194,
   "unbounded_share": 0.806,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.5,
   "window_m": [
    402.0,
    427.0
   ],
   "width_at_max25_m": 6.25,
   "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": 31,
    "stations_resolved": 31,
    "width_median_m": 2.0,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.935,
    "unbounded_share": 0.065,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.0,
    "window_m": [
     402.0,
     427.0
    ],
    "width_at_max25_m": 1.75,
    "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": "Porto-Vecchio",
  "county": "Corse-du-Sud",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}