{
 "ocl_version": "0.1.0",
 "name": "Mont\u00e9e du Ch\u00e2teau d'Eau",
 "slug": "montee-du-chateau-d-eau",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.513055678800356,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 428.0,
   "end_distance_m": 430.0,
   "start_elevation_m": 617.8239488296606,
   "end_elevation_m": 618.3342099432366,
   "min_gradient_pct": -5.837327962331074
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.74843923974201,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 452.0,
   "end_distance_m": 455.0,
   "start_elevation_m": 623.0141981647039,
   "end_elevation_m": 623.7566513418961,
   "min_gradient_pct": -5.329752855463236
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.645333849201506,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 448.0,
   "end_distance_m": 453.0,
   "start_elevation_m": 622.0916097783024,
   "end_elevation_m": 623.2738764707625,
   "min_gradient_pct": -2.5940795424207863
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.21765209434716,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 445.0,
   "end_distance_m": 455.0,
   "start_elevation_m": 621.4348861324614,
   "end_elevation_m": 623.7566513418961,
   "min_gradient_pct": 5.133147806807301
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.221684997185776,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 436.0,
   "end_distance_m": 456.0,
   "start_elevation_m": 619.5088989024005,
   "end_elevation_m": 623.9532359018376,
   "min_gradient_pct": 7.162382545302535
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.838216776218815,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 438.0,
   "end_distance_m": 463.0,
   "start_elevation_m": 619.9219954457072,
   "end_elevation_m": 625.3815496397619,
   "min_gradient_pct": 7.457143624326818
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.67298420214638,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 413.0,
   "end_distance_m": 463.0,
   "start_elevation_m": 614.5450575386888,
   "end_elevation_m": 625.3815496397619,
   "min_gradient_pct": 8.456938534813162
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.647188863839006,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 371.0,
   "end_distance_m": 471.0,
   "start_elevation_m": 607.3124608264445,
   "end_elevation_m": 626.9596496902835,
   "min_gradient_pct": 10.21353600537941
  }
 ],
 "shape": {
  "ascent_concentration": 0.317,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 343.0,
  "shape_class": "sustained"
 },
 "length_m": 665.0000000000964,
 "start_elevation_m": 559.4201446416045,
 "end_elevation_m": 654.0093147418306,
 "endpoint_gain_m": 94.58917010022617,
 "overall_gradient_pct": 14.223935353415406,
 "accumulated_ascent_m": 94.75669819179302,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.645333849201506,
   "start_distance_m": 448.0,
   "end_distance_m": 453.0,
   "midpoint_distance_m": 450.5,
   "start_elevation_m": 622.0916097783024,
   "end_elevation_m": 623.2738764707625,
   "start_xy": [
    814043.0786461299,
    6552743.498623113
   ],
   "end_xy": [
    814038.1802595118,
    6552744.501523178
   ]
  },
  "max_10m": {
   "gradient_pct": 23.21765209434716,
   "start_distance_m": 445.0,
   "end_distance_m": 455.0,
   "midpoint_distance_m": 450.0,
   "start_elevation_m": 621.4348861324614,
   "end_elevation_m": 623.7566513418961,
   "start_xy": [
    814046.0176781008,
    6552742.896883075
   ],
   "end_xy": [
    814036.2193120942,
    6552744.893336765
   ]
  },
  "max_20m": {
   "gradient_pct": 22.221684997185776,
   "start_distance_m": 436.0,
   "end_distance_m": 456.0,
   "midpoint_distance_m": 446.0,
   "start_elevation_m": 619.5088989024005,
   "end_elevation_m": 623.9532359018376,
   "start_xy": [
    814053.5730297721,
    6552738.618844075
   ],
   "end_xy": [
    814035.2284966174,
    6552745.028557662
   ]
  },
  "max_25m": {
   "gradient_pct": 21.838216776218815,
   "start_distance_m": 438.0,
   "end_distance_m": 463.0,
   "midpoint_distance_m": 450.5,
   "start_elevation_m": 619.9219954457072,
   "end_elevation_m": 625.3815496397619,
   "start_xy": [
    814052.0983475366,
    6552739.969885267
   ],
   "end_xy": [
    814028.2927882803,
    6552745.975103944
   ]
  },
  "max_50m": {
   "gradient_pct": 21.67298420214638,
   "start_distance_m": 413.0,
   "end_distance_m": 463.0,
   "midpoint_distance_m": 438.0,
   "start_elevation_m": 614.5450575386888,
   "end_elevation_m": 625.3815496397619,
   "start_xy": [
    814060.5124179086,
    6552717.183880387
   ],
   "end_xy": [
    814028.2927882803,
    6552745.975103944
   ]
  },
  "max_100m": {
   "gradient_pct": 19.647188863839006,
   "start_distance_m": 371.0,
   "end_distance_m": 471.0,
   "midpoint_distance_m": 421.0,
   "start_elevation_m": 607.3124608264445,
   "end_elevation_m": 626.9596496902835,
   "start_xy": [
    814063.2808653554,
    6552675.380073917
   ],
   "end_xy": [
    814020.3662644665,
    6552747.056871123
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.5940795424207863,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 559.4201446416045,
   "end_elevation_m": 559.2904406644834,
   "start_xy": [
    814254.774,
    6552386.549
   ],
   "end_xy": [
    814250.5578956441,
    6552389.236836315
   ]
  },
  "min_10m": {
   "gradient_pct": 5.133147806807301,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 559.4201446416045,
   "end_elevation_m": 559.9334594222852,
   "start_xy": [
    814254.774,
    6552386.549
   ],
   "end_xy": [
    814246.3417912881,
    6552391.924672632
   ]
  },
  "min_20m": {
   "gradient_pct": 7.162382545302535,
   "start_distance_m": 151.0,
   "end_distance_m": 171.0,
   "midpoint_distance_m": 161.0,
   "start_elevation_m": 581.522061850218,
   "end_elevation_m": 582.9545383592786,
   "start_xy": [
    814134.4010863809,
    6552476.96034178
   ],
   "end_xy": [
    814120.0867827133,
    6552489.600057421
   ]
  },
  "min_25m": {
   "gradient_pct": 7.457143624326818,
   "start_distance_m": 152.0,
   "end_distance_m": 177.0,
   "midpoint_distance_m": 164.5,
   "start_elevation_m": 581.6270436021201,
   "end_elevation_m": 583.4913295082018,
   "start_xy": [
    814133.53829271,
    6552477.46589799
   ],
   "end_xy": [
    814117.7918812945,
    6552495.1336370595
   ]
  },
  "min_50m": {
   "gradient_pct": 8.456938534813162,
   "start_distance_m": 279.0,
   "end_distance_m": 329.0,
   "midpoint_distance_m": 304.0,
   "start_elevation_m": 596.1511628594976,
   "end_elevation_m": 600.3796321269042,
   "start_xy": [
    814082.3129399767,
    6552586.026025986
   ],
   "end_xy": [
    814074.8302400664,
    6552635.180945675
   ]
  },
  "min_100m": {
   "gradient_pct": 10.21353600537941,
   "start_distance_m": 234.0,
   "end_distance_m": 334.0,
   "midpoint_distance_m": 284.0,
   "start_elevation_m": 590.7648197853543,
   "end_elevation_m": 600.9783557907338,
   "start_xy": [
    814109.2623383238,
    6552550.395358029
   ],
   "end_xy": [
    814073.7667292149,
    6552640.066531071
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.513055678800356,
   "start_distance_m": 428.0,
   "end_distance_m": 430.0,
   "midpoint_distance_m": 429.0,
   "start_elevation_m": 617.8239488296606,
   "end_elevation_m": 618.3342099432366,
   "start_xy": [
    814057.2292340136,
    6552731.774806521
   ],
   "end_xy": [
    814056.6144630685,
    6552733.677976688
   ]
  },
  "max_3m": {
   "gradient_pct": 24.74843923974201,
   "start_distance_m": 452.0,
   "end_distance_m": 455.0,
   "midpoint_distance_m": 453.5,
   "start_elevation_m": 623.0141981647039,
   "end_elevation_m": 623.7566513418961,
   "start_xy": [
    814039.1599368354,
    6552744.300943165
   ],
   "end_xy": [
    814036.2193120942,
    6552744.893336765
   ]
  }
 },
 "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": 0.153,
   "obstruction_max_height_m": 21.21,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "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_E813-N6552_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E814-N6552_0m5@21LHD5NK-2025-02-20.tif"
  ],
  "calculated_at": "2026-09-22T15:49:53+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": [
   "E813-N6552",
   "E814-N6552"
  ],
  "elevation_blocks": [
   "21LHD5NK@2025-02-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0813_6553_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0814_6553_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD5NK"
  ],
  "ign_editions": [
   "2025-02-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0813_6553_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0814_6553_MNT_O_0M50_LAMB93_IGN69": "2025-02-20"
  },
  "route_summit_trim_m": 68.4,
  "route_summit_trim_loss_m": 6.4,
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 33,
   "stations_resolved": 33,
   "width_median_m": 4.25,
   "width_p10_m": 2.85,
   "width_min_m": 1.5,
   "width_max_m": 12.0,
   "bounded_share": 0.121,
   "unbounded_share": 0.879,
   "confidence_median": 0.0,
   "width_median_bounded_m": 2.38,
   "window_m": [
    438.0,
    463.0
   ],
   "width_at_max25_m": 5.0,
   "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": 33,
    "stations_resolved": 33,
    "width_median_m": 6.5,
    "width_p10_m": 1.05,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.606,
    "unbounded_share": 0.394,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.0,
    "window_m": [
     438.0,
     463.0
    ],
    "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": "Saint-Nizier-d'Azergues",
  "county": "Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}