{
 "ocl_version": "0.1.0",
 "name": "Col du Pr\u00e9 from Beaubois",
 "slug": "col-du-pre-from-beaubois",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 16.941104976342558,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 1449.0,
   "end_distance_m": 1451.0,
   "start_elevation_m": 1643.4635497780484,
   "end_elevation_m": 1643.8023718775753,
   "min_gradient_pct": -1.4957375641756698,
   "suppressed_max_gradient_pct": 2804.1037878471343,
   "suppressed_location_m": [
    83.0,
    85.0
   ],
   "suppressed_min_gradient_pct": -2569.046980373912,
   "suppressed_min_location_m": [
    88.0,
    90.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 16.699503455705173,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 1448.0,
   "end_distance_m": 1451.0,
   "start_elevation_m": 1643.3013867739041,
   "end_elevation_m": 1643.8023718775753,
   "min_gradient_pct": -0.8450882989867144,
   "suppressed_max_gradient_pct": 2077.0838308299894,
   "suppressed_location_m": [
    83.0,
    86.0
   ],
   "suppressed_min_gradient_pct": -1875.4727919839827,
   "suppressed_min_location_m": [
    88.0,
    91.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 14.86316732569776,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 1446.0,
   "end_distance_m": 1451.0,
   "start_elevation_m": 1643.0592135112904,
   "end_elevation_m": 1643.8023718775753,
   "min_gradient_pct": -0.5637785683484253,
   "suppressed_max_gradient_pct": 1376.5574307826682,
   "suppressed_location_m": [
    81.0,
    86.0
   ],
   "suppressed_min_gradient_pct": -1198.4323819541714,
   "suppressed_min_location_m": [
    86.0,
    91.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 12.950889440560331,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 1599.0,
   "end_distance_m": 1609.0,
   "start_elevation_m": 1660.0872114476194,
   "end_elevation_m": 1661.3823003916755,
   "min_gradient_pct": -0.09682257346639744,
   "suppressed_max_gradient_pct": 702.1520655189056,
   "suppressed_location_m": [
    76.0,
    86.0
   ],
   "suppressed_min_gradient_pct": -598.9414563709761,
   "suppressed_min_location_m": [
    86.0,
    96.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 12.40581392357285,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 1599.0,
   "end_distance_m": 1619.0,
   "start_elevation_m": 1660.0872114476194,
   "end_elevation_m": 1662.568374232334,
   "min_gradient_pct": 0.15758492655436385,
   "suppressed_max_gradient_pct": 375.73392837070855,
   "suppressed_location_m": [
    67.0,
    87.0
   ],
   "suppressed_min_gradient_pct": -249.3762565347447,
   "suppressed_min_location_m": [
    49.0,
    69.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 12.154470404580024,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 1595.0,
   "end_distance_m": 1620.0,
   "start_elevation_m": 1659.6517756121116,
   "end_elevation_m": 1662.6903932132566,
   "min_gradient_pct": 0.21602893239560217,
   "suppressed_max_gradient_pct": 290.1420284456717,
   "suppressed_location_m": [
    62.0,
    87.0
   ],
   "suppressed_min_gradient_pct": -186.72521641444382,
   "suppressed_min_location_m": [
    49.0,
    74.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 11.664838688420787,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 1491.0,
   "end_distance_m": 1541.0,
   "start_elevation_m": 1648.068136831784,
   "end_elevation_m": 1653.9005561759943,
   "min_gradient_pct": 0.9144489062500725,
   "suppressed_max_gradient_pct": 176.16067585390877,
   "suppressed_location_m": [
    0.0,
    50.0
   ],
   "suppressed_min_gradient_pct": -65.07953893805416,
   "suppressed_min_location_m": [
    49.0,
    99.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 11.394044619286205,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 1446.0,
   "end_distance_m": 1546.0,
   "start_elevation_m": 1643.0592135112904,
   "end_elevation_m": 1654.4532581305766,
   "min_gradient_pct": 1.5311248811931364,
   "suppressed_max_gradient_pct": 76.75132410634319,
   "suppressed_location_m": [
    5.0,
    105.0
   ],
   "suppressed_min_gradient_pct": -7.425270103043886,
   "suppressed_min_location_m": [
    86.0,
    186.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.682,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 100.0,
  "shape_class": "stepped"
 },
 "length_m": 2775.8910549967113,
 "start_elevation_m": 1443.4112256116284,
 "end_elevation_m": 1734.7401447675802,
 "endpoint_gain_m": 291.3289191559518,
 "overall_gradient_pct": 10.494969484899217,
 "accumulated_ascent_m": 476.324598801868,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 14.86316732569776,
   "start_distance_m": 1446.0,
   "end_distance_m": 1451.0,
   "midpoint_distance_m": 1448.5,
   "start_elevation_m": 1643.0592135112904,
   "end_elevation_m": 1643.8023718775753,
   "start_xy": [
    981128.3765098483,
    6515586.067578737
   ],
   "end_xy": [
    981124.3903351775,
    6515589.002457727
   ]
  },
  "max_10m": {
   "gradient_pct": 12.950889440560331,
   "start_distance_m": 1599.0,
   "end_distance_m": 1609.0,
   "midpoint_distance_m": 1604.0,
   "start_elevation_m": 1660.0872114476194,
   "end_elevation_m": 1661.3823003916755,
   "start_xy": [
    981067.6424849876,
    6515724.780082068
   ],
   "end_xy": [
    981065.4770444013,
    6515734.5207074415
   ]
  },
  "max_20m": {
   "gradient_pct": 12.40581392357285,
   "start_distance_m": 1599.0,
   "end_distance_m": 1619.0,
   "midpoint_distance_m": 1609.0,
   "start_elevation_m": 1660.0872114476194,
   "end_elevation_m": 1662.568374232334,
   "start_xy": [
    981067.6424849876,
    6515724.780082068
   ],
   "end_xy": [
    981061.9162911398,
    6515743.849356424
   ]
  },
  "max_25m": {
   "gradient_pct": 12.154470404580024,
   "start_distance_m": 1595.0,
   "end_distance_m": 1620.0,
   "midpoint_distance_m": 1607.5,
   "start_elevation_m": 1659.6517756121116,
   "end_elevation_m": 1662.6903932132566,
   "start_xy": [
    981068.420872706,
    6515720.860401131
   ],
   "end_xy": [
    981061.459286713,
    6515744.7388208145
   ]
  },
  "max_50m": {
   "gradient_pct": 11.664838688420787,
   "start_distance_m": 1491.0,
   "end_distance_m": 1541.0,
   "midpoint_distance_m": 1516.0,
   "start_elevation_m": 1648.068136831784,
   "end_elevation_m": 1653.9005561759943,
   "start_xy": [
    981113.3461900392,
    6515627.317080219
   ],
   "end_xy": [
    981092.8259767467,
    6515672.832569335
   ]
  },
  "max_100m": {
   "gradient_pct": 11.394044619286205,
   "start_distance_m": 1446.0,
   "end_distance_m": 1546.0,
   "midpoint_distance_m": 1496.0,
   "start_elevation_m": 1643.0592135112904,
   "end_elevation_m": 1654.4532581305766,
   "start_xy": [
    981128.3765098483,
    6515586.067578737
   ],
   "end_xy": [
    981090.916043284,
    6515677.453408391
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.5637785683484253,
   "start_distance_m": 2494.0,
   "end_distance_m": 2499.0,
   "midpoint_distance_m": 2496.5,
   "start_elevation_m": 1726.2956746450163,
   "end_elevation_m": 1726.267485716599,
   "start_xy": [
    980735.8747102838,
    6515997.759326978
   ],
   "end_xy": [
    980732.4083857322,
    6516001.362740097
   ]
  },
  "min_10m": {
   "gradient_pct": -0.09682257346639744,
   "start_distance_m": 2486.0,
   "end_distance_m": 2496.0,
   "midpoint_distance_m": 2491.0,
   "start_elevation_m": 1726.2867425016293,
   "end_elevation_m": 1726.2770602442827,
   "start_xy": [
    980741.4210165616,
    6515991.994044754
   ],
   "end_xy": [
    980734.4883108928,
    6515999.200817959
   ]
  },
  "min_20m": {
   "gradient_pct": 0.15758492655436385,
   "start_distance_m": 2486.0,
   "end_distance_m": 2506.0,
   "midpoint_distance_m": 2496.0,
   "start_elevation_m": 1726.2867425016293,
   "end_elevation_m": 1726.3182594869402,
   "start_xy": [
    980741.4210165616,
    6515991.994044754
   ],
   "end_xy": [
    980727.5550668054,
    6516006.40707191
   ]
  },
  "min_25m": {
   "gradient_pct": 0.21602893239560217,
   "start_distance_m": 2477.0,
   "end_distance_m": 2502.0,
   "midpoint_distance_m": 2489.5,
   "start_elevation_m": 1726.2250030114028,
   "end_elevation_m": 1726.2790102445017,
   "start_xy": [
    980747.6603131383,
    6515985.507815624
   ],
   "end_xy": [
    980730.3284226789,
    6516003.524625788
   ]
  },
  "min_50m": {
   "gradient_pct": 0.9144489062500725,
   "start_distance_m": 2468.0,
   "end_distance_m": 2518.0,
   "midpoint_distance_m": 2493.0,
   "start_elevation_m": 1726.0593038788547,
   "end_elevation_m": 1726.5165283319798,
   "start_xy": [
    980752.9478659055,
    6515978.239942635
   ],
   "end_xy": [
    980719.2353654695,
    6516015.054761178
   ]
  },
  "min_100m": {
   "gradient_pct": 1.5311248811931364,
   "start_distance_m": 2451.0,
   "end_distance_m": 2551.0,
   "midpoint_distance_m": 2501.0,
   "start_elevation_m": 1725.6292908094538,
   "end_elevation_m": 1727.160415690647,
   "start_xy": [
    980761.8006128569,
    6515963.745008962
   ],
   "end_xy": [
    980697.7085630049,
    6516040.054725624
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 16.941104976342558,
   "start_distance_m": 1449.0,
   "end_distance_m": 1451.0,
   "midpoint_distance_m": 1450.0,
   "start_elevation_m": 1643.4635497780484,
   "end_elevation_m": 1643.8023718775753,
   "start_xy": [
    981125.9146193779,
    6515587.715455896
   ],
   "end_xy": [
    981124.3903351775,
    6515589.002457727
   ]
  },
  "max_3m": {
   "gradient_pct": 16.699503455705173,
   "start_distance_m": 1448.0,
   "end_distance_m": 1451.0,
   "midpoint_distance_m": 1449.5,
   "start_elevation_m": 1643.3013867739041,
   "end_elevation_m": 1643.8023718775753,
   "start_xy": [
    981126.7037540894,
    6515587.101235741
   ],
   "end_xy": [
    981124.3903351775,
    6515589.002457727
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.093,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "minima_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.093,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "placement_suppression": {
   "masked_fraction": 0.093,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.061,
   "obstruction_max_height_m": 112.89,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    258.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "8f4becd2ed8ab26772f5cd961ca7d1d0c2823252",
   "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": "remeasure-valley-260921-fr",
   "road_pbf": "batch-france-chunk000.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:d38241ff74fc66bb"
  },
  "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_E980-N6515_0m5@21LHD5QL2-2025-03-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E980-N6516_0m5@21LHD5QL2-2025-03-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E981-N6515_0m5@21LHD5QL2-2025-03-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E981-N6516_0m5@21LHD5QL2-2025-03-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E982-N6515_0m5@21LHD5QL2-2025-03-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E982-N6516_0m5@21LHD5QL2-2025-03-26.tif"
  ],
  "calculated_at": "2026-09-22T00:13:40+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/valley-260921/fr/batch-france-chunk000.pbf",
  "osm_snapshot": "",
  "run_id": "remeasure-valley-260921-fr",
  "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": [
   "E980-N6515",
   "E980-N6516",
   "E981-N6515",
   "E981-N6516",
   "E982-N6515",
   "E982-N6516"
  ],
  "elevation_blocks": [
   "21LHD5QL2@2025-03-26"
  ],
  "ign_dalles": [
   "LHD_FXX_0980_6516_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0980_6517_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0981_6516_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0981_6517_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0982_6516_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0982_6517_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD5QL2"
  ],
  "ign_editions": [
   "2025-03-26"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0980_6516_MNT_O_0M50_LAMB93_IGN69": "2025-03-26",
   "LHD_FXX_0980_6517_MNT_O_0M50_LAMB93_IGN69": "2025-03-26",
   "LHD_FXX_0981_6516_MNT_O_0M50_LAMB93_IGN69": "2025-03-26",
   "LHD_FXX_0981_6517_MNT_O_0M50_LAMB93_IGN69": "2025-03-26",
   "LHD_FXX_0982_6516_MNT_O_0M50_LAMB93_IGN69": "2025-03-26",
   "LHD_FXX_0982_6517_MNT_O_0M50_LAMB93_IGN69": "2025-03-26"
  },
  "route_base_cut_m": 583.0,
  "climb_origin": "named-pass",
  "structure_own_ways": 3,
  "structure_own_ways_source": "map-matched to the road network: the entry carried no way list, so the ways the route runs along were found by geometry (ukclimb.batch.own_ways_by_geometry)",
  "structure_mask_ranges_m": [
   [
    0.0,
    17.8
   ],
   [
    0.0,
    19.1
   ],
   [
    4.9,
    34.9
   ],
   [
    6.0,
    36.0
   ],
   [
    11.6,
    41.6
   ],
   [
    12.2,
    42.2
   ],
   [
    28.8,
    58.8
   ],
   [
    30.1,
    60.1
   ],
   [
    36.3,
    66.3
   ],
   [
    45.9,
    75.9
   ],
   [
    47.8,
    77.8
   ],
   [
    52.7,
    82.7
   ],
   [
    59.4,
    89.4
   ],
   [
    69.8,
    99.8
   ],
   [
    76.5,
    106.5
   ],
   [
    81.5,
    111.5
   ],
   [
    82.4,
    112.4
   ],
   [
    85.6,
    115.6
   ],
   [
    172.6,
    202.6
   ],
   [
    169.1,
    199.1
   ],
   [
    35.5,
    65.5
   ],
   [
    181.1,
    211.1
   ],
   [
    184.7,
    214.7
   ],
   [
    99.9,
    129.9
   ],
   [
    79.0,
    109.0
   ],
   [
    97.7,
    127.7
   ],
   [
    192.8,
    222.8
   ],
   [
    86.3,
    116.3
   ],
   [
    177.1,
    207.1
   ],
   [
    193.2,
    223.2
   ],
   [
    176.6,
    206.6
   ],
   [
    173.1,
    203.1
   ],
   [
    185.1,
    215.1
   ],
   [
    108.0,
    138.0
   ],
   [
    200.9,
    230.9
   ],
   [
    220.4,
    250.4
   ],
   [
    108.0,
    138.0
   ],
   [
    103.9,
    133.9
   ],
   [
    197.1,
    227.1
   ],
   [
    214.5,
    244.5
   ],
   [
    217.4,
    247.4
   ],
   [
    89.6,
    119.6
   ],
   [
    223.3,
    253.3
   ],
   [
    203.0,
    233.0
   ],
   [
    102.2,
    132.2
   ],
   [
    213.8,
    243.8
   ],
   [
    72.1,
    102.1
   ],
   [
    94.3,
    124.3
   ],
   [
    201.1,
    231.1
   ],
   [
    180.7,
    210.7
   ],
   [
    213.0,
    243.0
   ],
   [
    168.5,
    198.5
   ],
   [
    216.8,
    246.8
   ],
   [
    204.0,
    234.0
   ],
   [
    164.5,
    194.5
   ],
   [
    189.2,
    219.2
   ],
   [
    161.2,
    191.2
   ],
   [
    148.4,
    178.4
   ],
   [
    160.5,
    190.5
   ],
   [
    156.4,
    186.4
   ],
   [
    153.2,
    183.2
   ],
   [
    152.4,
    182.4
   ],
   [
    104.1,
    134.1
   ],
   [
    145.2,
    175.2
   ],
   [
    54.2,
    84.2
   ],
   [
    144.3,
    174.3
   ],
   [
    106.2,
    136.2
   ],
   [
    105.8,
    135.8
   ],
   [
    60.4,
    90.4
   ],
   [
    221.3,
    251.3
   ],
   [
    101.7,
    131.7
   ],
   [
    100.1,
    130.1
   ],
   [
    188.7,
    218.7
   ],
   [
    98.3,
    128.3
   ],
   [
    157.2,
    187.2
   ],
   [
    95.8,
    125.8
   ],
   [
    165.2,
    195.2
   ],
   [
    149.2,
    179.2
   ],
   [
    93.6,
    123.6
   ],
   [
    196.8,
    226.8
   ],
   [
    219.8,
    249.8
   ],
   [
    96.2,
    126.2
   ],
   [
    90.3,
    120.3
   ]
  ],
  "prior_doc": {
   "slug": "col-du-pre-from-beaubois",
   "calculated_at": "2026-09-17T07:09:48+00:00",
   "code_git_sha": null,
   "analysis_version": "0.1.0",
   "run_id": "fr-alps4-cols",
   "path": "/root/uk-climbs/output/valley-260921/fr/priors/col-du-pre-from-beaubois/col-du-pre-from-beaubois.json",
   "spans": 2,
   "sources": [
    "excluded_ranges_m"
   ]
  },
  "carriageway": {
   "stations": 117,
   "stations_resolved": 117,
   "width_median_m": 5.25,
   "width_p10_m": 3.75,
   "width_min_m": 0.5,
   "width_max_m": 10.75,
   "bounded_share": 0.59,
   "unbounded_share": 0.41,
   "confidence_median": 0.643,
   "width_median_bounded_m": 4.75,
   "window_m": [
    1595.0,
    1620.0
   ],
   "width_at_max25_m": 4.38,
   "window_stations": 6,
   "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": 117,
    "stations_resolved": 117,
    "width_median_m": 7.0,
    "width_p10_m": 4.9,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.718,
    "unbounded_share": 0.282,
    "confidence_median": 1.0,
    "width_median_bounded_m": 6.12,
    "window_m": [
     1595.0,
     1620.0
    ],
    "width_at_max25_m": 5.62,
    "window_stations": 6,
    "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
   }
  },
  "remeasured": {
   "on": "2026-09-22",
   "why": "valley-crossing extent re-measure 2026-09-22: low-to-summit (583.0 m -> 3360.0 m)",
   "published_max25_pct": 12.17,
   "max25_pct": 12.15
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Beaufort",
  "county": "Savoie",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}