{
 "ocl_version": "0.1.0",
 "name": "Chemin Costa \u00e0 I Peri",
 "slug": "chemin-costa-a-i-peri",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.172854655330013,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 327.0,
   "end_distance_m": 329.0,
   "start_elevation_m": 65.30530135171006,
   "end_elevation_m": 65.82875844481666,
   "min_gradient_pct": -7.094516138955953
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.148619647613184,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 334.0,
   "end_distance_m": 337.0,
   "start_elevation_m": 67.00591775432606,
   "end_elevation_m": 67.76037634375446,
   "min_gradient_pct": -6.017383875905343
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.838343823091265,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 223.0,
   "end_distance_m": 228.0,
   "start_elevation_m": 47.42533635157007,
   "end_elevation_m": 48.66725354272463,
   "min_gradient_pct": -5.206849335706636
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.55074992044402,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 327.0,
   "end_distance_m": 337.0,
   "start_elevation_m": 65.30530135171006,
   "end_elevation_m": 67.76037634375446,
   "min_gradient_pct": -4.703578542211915
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.86676063468002,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 326.0,
   "end_distance_m": 346.0,
   "start_elevation_m": 65.08144366073705,
   "end_elevation_m": 69.85479578767305,
   "min_gradient_pct": -3.803745167010959
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.57772782319978,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 327.0,
   "end_distance_m": 352.0,
   "start_elevation_m": 65.30530135171006,
   "end_elevation_m": 71.19973330751,
   "min_gradient_pct": -3.3966334785750405
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.014715947669544,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 197.0,
   "end_distance_m": 247.0,
   "start_elevation_m": 42.26405666261678,
   "end_elevation_m": 52.77141463645155,
   "min_gradient_pct": -2.742027660034026
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.55057292462981,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 197.0,
   "end_distance_m": 297.0,
   "start_elevation_m": 42.26405666261678,
   "end_elevation_m": 60.81462958724659,
   "min_gradient_pct": 2.050788385787321
  }
 ],
 "shape": {
  "ascent_concentration": 0.482,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 103.0,
  "shape_class": "stepped"
 },
 "length_m": 355.09999999980454,
 "start_elevation_m": 37.11282278646665,
 "end_elevation_m": 71.8240817143571,
 "endpoint_gain_m": 34.711258927890455,
 "overall_gradient_pct": 9.775065876628995,
 "accumulated_ascent_m": 36.19357209103788,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.838343823091265,
   "start_distance_m": 223.0,
   "end_distance_m": 228.0,
   "midpoint_distance_m": 225.5,
   "start_elevation_m": 47.42533635157007,
   "end_elevation_m": 48.66725354272463,
   "start_xy": [
    1186602.1240251262,
    6188690.506086076
   ],
   "end_xy": [
    1186597.1459732503,
    6188690.974059922
   ]
  },
  "max_10m": {
   "gradient_pct": 24.55074992044402,
   "start_distance_m": 327.0,
   "end_distance_m": 337.0,
   "midpoint_distance_m": 332.0,
   "start_elevation_m": 65.30530135171006,
   "end_elevation_m": 67.76037634375446,
   "start_xy": [
    1186513.8159855308,
    6188681.707563129
   ],
   "end_xy": [
    1186506.4518341569,
    6188688.472862423
   ]
  },
  "max_20m": {
   "gradient_pct": 23.86676063468002,
   "start_distance_m": 326.0,
   "end_distance_m": 346.0,
   "midpoint_distance_m": 336.0,
   "start_elevation_m": 65.08144366073705,
   "end_elevation_m": 69.85479578767305,
   "start_xy": [
    1186514.5524006684,
    6188681.031033199
   ],
   "end_xy": [
    1186499.82158169,
    6188694.558891664
   ]
  },
  "max_25m": {
   "gradient_pct": 23.57772782319978,
   "start_distance_m": 327.0,
   "end_distance_m": 352.0,
   "midpoint_distance_m": 339.5,
   "start_elevation_m": 65.30530135171006,
   "end_elevation_m": 71.19973330751,
   "start_xy": [
    1186513.8159855308,
    6188681.707563129
   ],
   "end_xy": [
    1186495.4013761668,
    6188698.6162039675
   ]
  },
  "max_50m": {
   "gradient_pct": 21.014715947669544,
   "start_distance_m": 197.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 222.0,
   "start_elevation_m": 42.26405666261678,
   "end_elevation_m": 52.77141463645155,
   "start_xy": [
    1186627.6859558611,
    6188686.937712753
   ],
   "end_xy": [
    1186578.2293761221,
    6188692.75236054
   ]
  },
  "max_100m": {
   "gradient_pct": 18.55057292462981,
   "start_distance_m": 197.0,
   "end_distance_m": 297.0,
   "midpoint_distance_m": 247.0,
   "start_elevation_m": 42.26405666261678,
   "end_elevation_m": 60.81462958724659,
   "start_xy": [
    1186627.6859558611,
    6188686.937712753
   ],
   "end_xy": [
    1186538.4873393732,
    6188665.963592486
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.206849335706636,
   "start_distance_m": 153.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 155.5,
   "start_elevation_m": 43.35481022891846,
   "end_elevation_m": 43.09446776213313,
   "start_xy": [
    1186643.0230565465,
    6188646.315546032
   ],
   "end_xy": [
    1186640.8011578335,
    6188650.794738606
   ]
  },
  "min_10m": {
   "gradient_pct": -4.703578542211915,
   "start_distance_m": 148.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 153.0,
   "start_elevation_m": 43.56482561635432,
   "end_elevation_m": 43.09446776213313,
   "start_xy": [
    1186645.2449552591,
    6188641.836353458
   ],
   "end_xy": [
    1186640.8011578335,
    6188650.794738606
   ]
  },
  "min_20m": {
   "gradient_pct": -3.803745167010959,
   "start_distance_m": 147.0,
   "end_distance_m": 167.0,
   "midpoint_distance_m": 157.0,
   "start_elevation_m": 43.57991536438314,
   "end_elevation_m": 42.81916633098095,
   "start_xy": [
    1186645.6893350016,
    6188640.940514944
   ],
   "end_xy": [
    1186636.8017401504,
    6188658.857285238
   ]
  },
  "min_25m": {
   "gradient_pct": -3.3966334785750405,
   "start_distance_m": 147.0,
   "end_distance_m": 172.0,
   "midpoint_distance_m": 159.5,
   "start_elevation_m": 43.57991536438314,
   "end_elevation_m": 42.73075699473938,
   "start_xy": [
    1186645.6893350016,
    6188640.940514944
   ],
   "end_xy": [
    1186634.5798414377,
    6188663.3364778105
   ]
  },
  "min_50m": {
   "gradient_pct": -2.742027660034026,
   "start_distance_m": 144.0,
   "end_distance_m": 194.0,
   "midpoint_distance_m": 169.0,
   "start_elevation_m": 43.62354831122847,
   "end_elevation_m": 42.252534481211455,
   "start_xy": [
    1186647.0224742293,
    6188638.2529994
   ],
   "end_xy": [
    1186628.2251444948,
    6188684.0772886155
   ]
  },
  "min_100m": {
   "gradient_pct": 2.050788385787321,
   "start_distance_m": 97.0,
   "end_distance_m": 197.0,
   "midpoint_distance_m": 147.0,
   "start_elevation_m": 40.21326827682946,
   "end_elevation_m": 42.26405666261678,
   "start_xy": [
    1186677.0990251468,
    6188602.920235775
   ],
   "end_xy": [
    1186627.6859558611,
    6188686.937712753
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.172854655330013,
   "start_distance_m": 327.0,
   "end_distance_m": 329.0,
   "midpoint_distance_m": 328.0,
   "start_elevation_m": 65.30530135171006,
   "end_elevation_m": 65.82875844481666,
   "start_xy": [
    1186513.8159855308,
    6188681.707563129
   ],
   "end_xy": [
    1186512.343155256,
    6188683.060622987
   ]
  },
  "max_3m": {
   "gradient_pct": 25.148619647613184,
   "start_distance_m": 334.0,
   "end_distance_m": 337.0,
   "midpoint_distance_m": 335.5,
   "start_elevation_m": 67.00591775432606,
   "end_elevation_m": 67.76037634375446,
   "start_xy": [
    1186508.661079569,
    6188686.443272635
   ],
   "end_xy": [
    1186506.4518341569,
    6188688.472862423
   ]
  }
 },
 "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": 0.036,
   "obstruction_max_height_m": 4.47,
   "flagged_windows_m": []
  },
  "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-co2",
   "road_pbf": "block-batch-fr-co2.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_E1186-N6188_0m5@21LHDCorseUS-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:49:50+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co2",
  "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": [
   "E1186-N6188"
  ],
  "elevation_blocks": [
   "21LHDCorseUS@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1186_6189_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseUS"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1186_6189_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "route_cut_m": 355.1,
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 21,
   "stations_resolved": 21,
   "width_median_m": 5.5,
   "width_p10_m": 3.0,
   "width_min_m": 2.75,
   "width_max_m": 12.0,
   "bounded_share": 0.381,
   "unbounded_share": 0.619,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.88,
   "window_m": [
    327.0,
    352.0
   ],
   "width_at_max25_m": 3.25,
   "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": 21,
    "stations_resolved": 21,
    "width_median_m": 3.75,
    "width_p10_m": 1.25,
    "width_min_m": 0.75,
    "width_max_m": 12.0,
    "bounded_share": 0.857,
    "unbounded_share": 0.143,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.0,
    "window_m": [
     327.0,
     352.0
    ],
    "width_at_max25_m": 2.75,
    "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": "L'\u00cele-Rousse",
  "county": "Haute-Corse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}