{
 "ocl_version": "0.1.0",
 "name": "Col de Manse from Romette",
 "slug": "col-de-manse-from-romette",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 14.24323509468195,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2717.0,
   "end_distance_m": 2719.0,
   "start_elevation_m": 1123.457118777998,
   "end_elevation_m": 1123.7419834798916,
   "min_gradient_pct": -257.4562888247783,
   "suppressed_max_gradient_pct": 260.79956095336456,
   "suppressed_location_m": [
    1681.0,
    1683.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 12.35329077070825,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2707.0,
   "end_distance_m": 2710.0,
   "start_elevation_m": 1122.7164864845251,
   "end_elevation_m": 1123.0870852076464,
   "min_gradient_pct": -171.6617824219611,
   "suppressed_max_gradient_pct": 173.95901699696878,
   "suppressed_location_m": [
    1681.0,
    1684.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 10.064386363601443,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3522.0,
   "end_distance_m": 3527.0,
   "start_elevation_m": 1162.305677442982,
   "end_elevation_m": 1162.808896761162,
   "min_gradient_pct": -103.12142162654254,
   "suppressed_max_gradient_pct": 105.0233440684724,
   "suppressed_location_m": [
    1681.0,
    1686.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 9.717948751770109,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3521.0,
   "end_distance_m": 3531.0,
   "start_elevation_m": 1162.2064444867608,
   "end_elevation_m": 1163.1782393619378,
   "min_gradient_pct": -51.07770844079596,
   "suppressed_max_gradient_pct": 53.08675296708316,
   "suppressed_location_m": [
    1681.0,
    1691.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 9.419536730559912,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3523.0,
   "end_distance_m": 3543.0,
   "start_elevation_m": 1162.386170648576,
   "end_elevation_m": 1164.2700779946879,
   "min_gradient_pct": -25.87191239215258,
   "suppressed_max_gradient_pct": 27.069331864000787,
   "suppressed_location_m": [
    1681.0,
    1701.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 9.366006898710111,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3520.0,
   "end_distance_m": 3545.0,
   "start_elevation_m": 1162.129252986716,
   "end_elevation_m": 1164.4707547113935,
   "min_gradient_pct": -20.754354167571364,
   "suppressed_max_gradient_pct": 22.0572069301179,
   "suppressed_location_m": [
    1681.0,
    1706.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 9.106536414157745,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3501.0,
   "end_distance_m": 3551.0,
   "start_elevation_m": 1160.459825576191,
   "end_elevation_m": 1165.0130937832698,
   "min_gradient_pct": -10.167399323006975,
   "suppressed_max_gradient_pct": 12.68408412925828,
   "suppressed_location_m": [
    3235.0,
    3285.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 8.817537264089651,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3497.0,
   "end_distance_m": 3597.0,
   "start_elevation_m": 1160.1125879047656,
   "end_elevation_m": 1168.9301251688553,
   "min_gradient_pct": -5.469880123249368,
   "suppressed_max_gradient_pct": 9.75195933060536,
   "suppressed_location_m": [
    3235.0,
    3335.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.353,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 12.0,
  "shape_class": "sustained"
 },
 "length_m": 5864.69849401481,
 "start_elevation_m": 1013.280147017852,
 "end_elevation_m": 1271.3599265478558,
 "endpoint_gain_m": 258.07977953000386,
 "overall_gradient_pct": 4.400563469603526,
 "accumulated_ascent_m": 274.78976245933063,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 10.064386363601443,
   "start_distance_m": 3522.0,
   "end_distance_m": 3527.0,
   "midpoint_distance_m": 3524.5,
   "start_elevation_m": 1162.305677442982,
   "end_elevation_m": 1162.808896761162,
   "start_xy": [
    946993.7756150515,
    6394213.439173381
   ],
   "end_xy": [
    946996.5563558934,
    6394217.594589169
   ]
  },
  "max_10m": {
   "gradient_pct": 9.717948751770109,
   "start_distance_m": 3521.0,
   "end_distance_m": 3531.0,
   "midpoint_distance_m": 3526.0,
   "start_elevation_m": 1162.2064444867608,
   "end_elevation_m": 1163.1782393619378,
   "start_xy": [
    946993.2194668832,
    6394212.608090224
   ],
   "end_xy": [
    946999.0202113825,
    6394220.735970533
   ]
  },
  "max_20m": {
   "gradient_pct": 9.419536730559912,
   "start_distance_m": 3523.0,
   "end_distance_m": 3543.0,
   "midpoint_distance_m": 3533.0,
   "start_elevation_m": 1162.386170648576,
   "end_elevation_m": 1164.2700779946879,
   "start_xy": [
    946994.3317632199,
    6394214.270256539
   ],
   "end_xy": [
    947006.9158310528,
    6394229.770228928
   ]
  },
  "max_25m": {
   "gradient_pct": 9.366006898710111,
   "start_distance_m": 3520.0,
   "end_distance_m": 3545.0,
   "midpoint_distance_m": 3532.5,
   "start_elevation_m": 1162.129252986716,
   "end_elevation_m": 1164.4707547113935,
   "start_xy": [
    946992.6633187148,
    6394211.777007066
   ],
   "end_xy": [
    947008.4042227298,
    6394231.106151911
   ]
  },
  "max_50m": {
   "gradient_pct": 9.106536414157745,
   "start_distance_m": 3501.0,
   "end_distance_m": 3551.0,
   "midpoint_distance_m": 3526.0,
   "start_elevation_m": 1160.459825576191,
   "end_elevation_m": 1165.0130937832698,
   "start_xy": [
    946983.2857740552,
    6394195.289769895
   ],
   "end_xy": [
    947012.869397761,
    6394235.113920859
   ]
  },
  "max_100m": {
   "gradient_pct": 8.817537264089651,
   "start_distance_m": 3497.0,
   "end_distance_m": 3597.0,
   "midpoint_distance_m": 3547.0,
   "start_elevation_m": 1160.1125879047656,
   "end_elevation_m": 1168.9301251688553,
   "start_xy": [
    946981.4740149591,
    6394191.723605433
   ],
   "end_xy": [
    947051.8436905374,
    6394259.056662618
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -103.12142162654254,
   "start_distance_m": 1676.0,
   "end_distance_m": 1681.0,
   "midpoint_distance_m": 1678.5,
   "start_elevation_m": 1074.6124399980188,
   "end_elevation_m": 1069.4563689166916,
   "start_xy": [
    945676.121272449,
    6393522.089728035
   ],
   "end_xy": [
    945681.0969381102,
    6393522.248957043
   ]
  },
  "min_10m": {
   "gradient_pct": -51.07770844079596,
   "start_distance_m": 1671.0,
   "end_distance_m": 1681.0,
   "midpoint_distance_m": 1676.0,
   "start_elevation_m": 1074.5641397607712,
   "end_elevation_m": 1069.4563689166916,
   "start_xy": [
    945671.3423989076,
    6393520.998057676
   ],
   "end_xy": [
    945681.0969381102,
    6393522.248957043
   ]
  },
  "min_20m": {
   "gradient_pct": -25.87191239215258,
   "start_distance_m": 1661.0,
   "end_distance_m": 1681.0,
   "midpoint_distance_m": 1671.0,
   "start_elevation_m": 1074.6307513951222,
   "end_elevation_m": 1069.4563689166916,
   "start_xy": [
    945664.202584243,
    6393514.210106951
   ],
   "end_xy": [
    945681.0969381102,
    6393522.248957043
   ]
  },
  "min_25m": {
   "gradient_pct": -20.754354167571364,
   "start_distance_m": 1656.0,
   "end_distance_m": 1681.0,
   "midpoint_distance_m": 1668.5,
   "start_elevation_m": 1074.6449574585845,
   "end_elevation_m": 1069.4563689166916,
   "start_xy": [
    945662.3464095306,
    6393509.625458379
   ],
   "end_xy": [
    945681.0969381102,
    6393522.248957043
   ]
  },
  "min_50m": {
   "gradient_pct": -10.167399323006975,
   "start_distance_m": 1631.0,
   "end_distance_m": 1681.0,
   "midpoint_distance_m": 1656.0,
   "start_elevation_m": 1074.5400685781951,
   "end_elevation_m": 1069.4563689166916,
   "start_xy": [
    945665.7030775851,
    6393485.176217321
   ],
   "end_xy": [
    945681.0969381102,
    6393522.248957043
   ]
  },
  "min_100m": {
   "gradient_pct": -5.469880123249368,
   "start_distance_m": 1581.0,
   "end_distance_m": 1681.0,
   "midpoint_distance_m": 1631.0,
   "start_elevation_m": 1074.926249039941,
   "end_elevation_m": 1069.4563689166916,
   "start_xy": [
    945668.3058088593,
    6393435.957515595
   ],
   "end_xy": [
    945681.0969381102,
    6393522.248957043
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 14.24323509468195,
   "start_distance_m": 2717.0,
   "end_distance_m": 2719.0,
   "midpoint_distance_m": 2718.0,
   "start_elevation_m": 1123.457118777998,
   "end_elevation_m": 1123.7419834798916,
   "start_xy": [
    946593.5429147724,
    6393670.138783193
   ],
   "end_xy": [
    946595.1276307877,
    6393671.358895955
   ]
  },
  "max_3m": {
   "gradient_pct": 12.35329077070825,
   "start_distance_m": 2707.0,
   "end_distance_m": 2710.0,
   "midpoint_distance_m": 2708.5,
   "start_elevation_m": 1122.7164864845251,
   "end_elevation_m": 1123.0870852076464,
   "start_xy": [
    946584.8299293737,
    6393665.302517706
   ],
   "end_xy": [
    946587.5178496654,
    6393666.634840679
   ]
  }
 },
 "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": 0.01,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.006,
   "obstruction_max_height_m": 15.08,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    1674.0,
    1688.0
   ],
   [
    3227.0,
    3241.0
   ],
   [
    5238.0,
    5266.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "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_E944-N6392_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E944-N6393_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E945-N6392_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E945-N6393_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E946-N6393_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E946-N6394_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E947-N6393_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E947-N6394_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E947-N6395_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E948-N6394_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E948-N6395_0m5.tif"
  ],
  "calculated_at": "2026-09-17T04:49:44+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps3",
  "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": [
   "E944-N6392",
   "E944-N6393",
   "E945-N6392",
   "E945-N6393",
   "E946-N6393",
   "E946-N6394",
   "E947-N6393",
   "E947-N6394",
   "E947-N6395",
   "E948-N6394",
   "E948-N6395"
  ],
  "elevation_blocks": [
   "21LHD8QN@2025-02-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0944_6393_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0944_6394_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0945_6393_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0945_6394_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0946_6394_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0946_6395_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0947_6394_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0947_6395_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0947_6396_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0948_6395_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0948_6396_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD8QN"
  ],
  "ign_editions": [
   "2025-02-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0944_6393_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0944_6394_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0945_6393_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0945_6394_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0946_6394_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0946_6395_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0947_6394_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0947_6395_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0947_6396_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0948_6395_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0948_6396_MNT_O_0M50_LAMB93_IGN69": "2025-02-20"
  },
  "climb_origin": "named-pass",
  "structure_own_ways": 9,
  "structure_mask_ranges_m": [
   [
    5243.8,
    5261.4
   ]
  ],
  "carriageway": {
   "stations": 240,
   "stations_resolved": 240,
   "width_median_m": 9.25,
   "width_p10_m": 7.5,
   "width_min_m": 2.0,
   "width_max_m": 12.0,
   "bounded_share": 0.104,
   "unbounded_share": 0.896,
   "confidence_median": 0.0,
   "width_median_bounded_m": 9.0,
   "window_m": [
    3520.0,
    3545.0
   ],
   "width_at_max25_m": 11.0,
   "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": 240,
    "stations_resolved": 240,
    "width_median_m": 11.5,
    "width_p10_m": 9.75,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.15,
    "unbounded_share": 0.85,
    "confidence_median": 0.0,
    "width_median_bounded_m": 10.12,
    "window_m": [
     3520.0,
     3545.0
    ],
    "width_at_max25_m": 12.0,
    "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
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Gap",
  "county": "Hautes-Alpes",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}