{
 "ocl_version": "0.1.0",
 "name": "Mont\u00e9e de la Brolle",
 "slug": "montee-de-la-brolle",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 34.698420385507234,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 271.0,
   "end_distance_m": 273.0,
   "start_elevation_m": 655.5738463870655,
   "end_elevation_m": 656.2678147947756,
   "min_gradient_pct": 0.15872560489356147
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.22889018886887,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 271.0,
   "end_distance_m": 274.0,
   "start_elevation_m": 655.5738463870655,
   "end_elevation_m": 656.6007130927316,
   "min_gradient_pct": 1.207075673031947
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 33.37020861245037,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 270.0,
   "end_distance_m": 275.0,
   "start_elevation_m": 655.2515454621648,
   "end_elevation_m": 656.9200558927873,
   "min_gradient_pct": 1.1238225971465
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 29.52267312925187,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 266.0,
   "end_distance_m": 276.0,
   "start_elevation_m": 654.2593580600104,
   "end_elevation_m": 657.2116253729356,
   "min_gradient_pct": 2.0352775505466525
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.91267014850473,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 257.0,
   "end_distance_m": 277.0,
   "start_elevation_m": 652.2411482498628,
   "end_elevation_m": 657.4236822795638,
   "min_gradient_pct": 2.617972423831816
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.568313618568936,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 252.0,
   "end_distance_m": 277.0,
   "start_elevation_m": 651.2816038749215,
   "end_elevation_m": 657.4236822795638,
   "min_gradient_pct": 3.0778400291501384
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.716506940727186,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 93.0,
   "end_distance_m": 143.0,
   "start_elevation_m": 629.6847061718014,
   "end_elevation_m": 639.042959642165,
   "min_gradient_pct": 4.878737187241541
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.707557093521473,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 88.0,
   "end_distance_m": 188.0,
   "start_elevation_m": 629.1430913038057,
   "end_elevation_m": 644.8506483973272,
   "min_gradient_pct": 6.876344815451603
  }
 ],
 "shape": {
  "ascent_concentration": 0.359,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 103.0,
  "shape_class": "sustained"
 },
 "length_m": 278.63326629917634,
 "start_elevation_m": 624.1779965375994,
 "end_elevation_m": 657.622288437982,
 "endpoint_gain_m": 33.44429190038261,
 "overall_gradient_pct": 12.002978806009667,
 "accumulated_ascent_m": 33.472067495128044,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 33.37020861245037,
   "start_distance_m": 270.0,
   "end_distance_m": 275.0,
   "midpoint_distance_m": 272.5,
   "start_elevation_m": 655.2515454621648,
   "end_elevation_m": 656.9200558927873,
   "start_xy": [
    804807.4396033783,
    6423054.69527744
   ],
   "end_xy": [
    804812.2896776906,
    6423053.48004941
   ]
  },
  "max_10m": {
   "gradient_pct": 29.52267312925187,
   "start_distance_m": 266.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 271.0,
   "start_elevation_m": 654.2593580600104,
   "end_elevation_m": 657.2116253729356,
   "start_xy": [
    804803.5595439286,
    6423055.667459864
   ],
   "end_xy": [
    804813.2596925531,
    6423053.237003803
   ]
  },
  "max_20m": {
   "gradient_pct": 25.91267014850473,
   "start_distance_m": 257.0,
   "end_distance_m": 277.0,
   "midpoint_distance_m": 267.0,
   "start_elevation_m": 652.2411482498628,
   "end_elevation_m": 657.4236822795638,
   "start_xy": [
    804794.8294101665,
    6423057.854870319
   ],
   "end_xy": [
    804814.2297074154,
    6423052.9939581975
   ]
  },
  "max_25m": {
   "gradient_pct": 24.568313618568936,
   "start_distance_m": 252.0,
   "end_distance_m": 277.0,
   "midpoint_distance_m": 264.5,
   "start_elevation_m": 651.2816038749215,
   "end_elevation_m": 657.4236822795638,
   "start_xy": [
    804789.9793358543,
    6423059.07009835
   ],
   "end_xy": [
    804814.2297074154,
    6423052.9939581975
   ]
  },
  "max_50m": {
   "gradient_pct": 18.716506940727186,
   "start_distance_m": 93.0,
   "end_distance_m": 143.0,
   "midpoint_distance_m": 118.0,
   "start_elevation_m": 629.6847061718014,
   "end_elevation_m": 639.042959642165,
   "start_xy": [
    804666.8212658088,
    6423126.985411974
   ],
   "end_xy": [
    804698.3232061472,
    6423088.6160361525
   ]
  },
  "max_100m": {
   "gradient_pct": 15.707557093521473,
   "start_distance_m": 88.0,
   "end_distance_m": 188.0,
   "midpoint_distance_m": 138.0,
   "start_elevation_m": 629.1430913038057,
   "end_elevation_m": 644.8506483973272,
   "start_xy": [
    804663.1122178999,
    6423130.338237749
   ],
   "end_xy": [
    804728.753726014,
    6423057.551411338
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.1238225971465,
   "start_distance_m": 6.0,
   "end_distance_m": 11.0,
   "midpoint_distance_m": 8.5,
   "start_elevation_m": 624.3713327330544,
   "end_elevation_m": 624.4275238629117,
   "start_xy": [
    804590.2526511499,
    6423121.339533197
   ],
   "end_xy": [
    804594.814027108,
    6423119.291644194
   ]
  },
  "min_10m": {
   "gradient_pct": 2.0352775505466525,
   "start_distance_m": 7.0,
   "end_distance_m": 17.0,
   "midpoint_distance_m": 12.0,
   "start_elevation_m": 624.3689857661709,
   "end_elevation_m": 624.5725135212256,
   "start_xy": [
    804591.1649263415,
    6423120.929955396
   ],
   "end_xy": [
    804600.2876782579,
    6423116.834177391
   ]
  },
  "min_20m": {
   "gradient_pct": 2.617972423831816,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 624.1779965375994,
   "end_elevation_m": 624.7015910223657,
   "start_xy": [
    804584.779,
    6423123.797
   ],
   "end_xy": [
    804603.0245038328,
    6423115.605443989
   ]
  },
  "min_25m": {
   "gradient_pct": 3.0778400291501384,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 624.1779965375994,
   "end_elevation_m": 624.9474565448869,
   "start_xy": [
    804584.779,
    6423123.797
   ],
   "end_xy": [
    804607.5858797911,
    6423113.557554986
   ]
  },
  "min_50m": {
   "gradient_pct": 4.878737187241541,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 624.1779965375994,
   "end_elevation_m": 626.6173651312201,
   "start_xy": [
    804584.779,
    6423123.797
   ],
   "end_xy": [
    804631.4919168216,
    6423110.70897984
   ]
  },
  "min_100m": {
   "gradient_pct": 6.876344815451603,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 624.1779965375994,
   "end_elevation_m": 631.054341353051,
   "start_xy": [
    804584.779,
    6423123.797
   ],
   "end_xy": [
    804671.877706216,
    6423122.1447084695
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 34.698420385507234,
   "start_distance_m": 271.0,
   "end_distance_m": 273.0,
   "midpoint_distance_m": 272.0,
   "start_elevation_m": 655.5738463870655,
   "end_elevation_m": 656.2678147947756,
   "start_xy": [
    804808.4096182408,
    6423054.452231834
   ],
   "end_xy": [
    804810.3496479656,
    6423053.966140622
   ]
  },
  "max_3m": {
   "gradient_pct": 34.22889018886887,
   "start_distance_m": 271.0,
   "end_distance_m": 274.0,
   "midpoint_distance_m": 272.5,
   "start_elevation_m": 655.5738463870655,
   "end_elevation_m": 656.6007130927316,
   "start_xy": [
    804808.4096182408,
    6423054.452231834
   ],
   "end_xy": [
    804811.3196628281,
    6423053.723095016
   ]
  }
 },
 "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": 0.0,
   "obstruction_max_height_m": 0.72,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "076a8e7f889cfb3c2cf6b3de65a6030c7155b1f0",
   "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-mc7",
   "road_pbf": "block-batch-fr-mc7.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_E804-N6423_0m5@22LHD5NN-2025-06-04.tif"
  ],
  "calculated_at": "2026-09-22T12:34:53+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc7.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc7",
  "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": [
   "E804-N6423"
  ],
  "elevation_blocks": [
   "22LHD5NN@2025-06-04"
  ],
  "ign_dalles": [
   "LHD_FXX_0804_6424_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD5NN"
  ],
  "ign_editions": [
   "2025-06-04"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0804_6424_MNT_O_0M50_LAMB93_IGN69": "2025-06-04"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 4,
  "carriageway": {
   "stations": 18,
   "stations_resolved": 18,
   "width_median_m": 4.88,
   "width_p10_m": 3.6,
   "width_min_m": 3.0,
   "width_max_m": 8.75,
   "bounded_share": 0.389,
   "unbounded_share": 0.611,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.5,
   "window_m": [
    252.0,
    277.0
   ],
   "width_at_max25_m": 4.5,
   "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": 18,
    "stations_resolved": 18,
    "width_median_m": 6.12,
    "width_p10_m": 3.35,
    "width_min_m": 3.0,
    "width_max_m": 10.5,
    "bounded_share": 0.722,
    "unbounded_share": 0.278,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.0,
    "window_m": [
     252.0,
     277.0
    ],
    "width_at_max25_m": 6.0,
    "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": "Arcens",
  "county": "Ard\u00e8che",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}