{
 "ocl_version": "0.1.0",
 "name": "Fell Foot Brow",
 "slug": "fell-foot-brow",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 37.509447799435236,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 714.0,
   "end_distance_m": 716.0,
   "start_elevation_m": 108.70717589011447,
   "end_elevation_m": 109.45736484610318,
   "min_gradient_pct": -29.150868148751385,
   "suppressed_max_gradient_pct": 74.46845382700005,
   "suppressed_location_m": [
    389.0,
    391.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 36.31002421319636,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 714.0,
   "end_distance_m": 717.0,
   "start_elevation_m": 108.70717589011447,
   "end_elevation_m": 109.79647661651036,
   "min_gradient_pct": -25.745464758617704,
   "suppressed_max_gradient_pct": 73.00108072684992,
   "suppressed_location_m": [
    389.0,
    392.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.39580541367633,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 714.0,
   "end_distance_m": 719.0,
   "start_elevation_m": 108.70717589011447,
   "end_elevation_m": 110.42696616079829,
   "min_gradient_pct": -25.149222137638674,
   "suppressed_max_gradient_pct": 68.0119960966195,
   "suppressed_location_m": [
    388.0,
    393.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.33831015036938,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 710.0,
   "end_distance_m": 720.0,
   "start_elevation_m": 108.36002284263782,
   "end_elevation_m": 110.39385385767476,
   "min_gradient_pct": -18.338500645798632,
   "suppressed_max_gradient_pct": 54.57054244738301,
   "suppressed_location_m": [
    383.0,
    393.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 18.928423660912443,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1562.0,
   "end_distance_m": 1582.0,
   "start_elevation_m": 212.29987088305444,
   "end_elevation_m": 216.08555561523693,
   "min_gradient_pct": -12.812265566242544,
   "suppressed_max_gradient_pct": 37.75025719763072,
   "suppressed_location_m": [
    377.0,
    397.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 18.755261329919563,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1561.0,
   "end_distance_m": 1586.0,
   "start_elevation_m": 212.11133509593623,
   "end_elevation_m": 216.80015042841612,
   "min_gradient_pct": -11.483999767246473,
   "suppressed_max_gradient_pct": 31.743512475631686,
   "suppressed_location_m": [
    376.0,
    401.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.902062912839995,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1543.0,
   "end_distance_m": 1593.0,
   "start_elevation_m": 209.0551756514413,
   "end_elevation_m": 218.0062071078613,
   "min_gradient_pct": -10.192904570121243,
   "suppressed_max_gradient_pct": 21.87978299211281,
   "suppressed_location_m": [
    742.0,
    792.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.46079373832697,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1498.0,
   "end_distance_m": 1598.0,
   "start_elevation_m": 202.25714524277015,
   "end_elevation_m": 218.71793898109712,
   "min_gradient_pct": -8.6682153110211,
   "suppressed_max_gradient_pct": 17.4189965313185,
   "suppressed_location_m": [
    294.0,
    394.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.339,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 394.0,
  "shape_class": "sustained"
 },
 "length_m": 1881.7187872427044,
 "start_elevation_m": 47.705735394043046,
 "end_elevation_m": 220.79815737594626,
 "endpoint_gain_m": 173.09242198190321,
 "overall_gradient_pct": 9.198633884903533,
 "accumulated_ascent_m": 187.2920029003207,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.39580541367633,
   "start_distance_m": 714.0,
   "end_distance_m": 719.0,
   "midpoint_distance_m": 716.5,
   "start_elevation_m": 108.70717589011447,
   "end_elevation_m": 110.42696616079829,
   "start_xy": [
    338500.7240322384,
    487105.2089502105
   ],
   "end_xy": [
    338503.6005325914,
    487109.298662017
   ]
  },
  "max_10m": {
   "gradient_pct": 20.33831015036938,
   "start_distance_m": 710.0,
   "end_distance_m": 720.0,
   "midpoint_distance_m": 715.0,
   "start_elevation_m": 108.36002284263782,
   "end_elevation_m": 110.39385385767476,
   "start_xy": [
    338498.42245232547,
    487101.9374479206
   ],
   "end_xy": [
    338504.1756519901,
    487110.1167314721
   ]
  },
  "max_20m": {
   "gradient_pct": 18.928423660912443,
   "start_distance_m": 1562.0,
   "end_distance_m": 1582.0,
   "midpoint_distance_m": 1572.0,
   "start_elevation_m": 212.29987088305444,
   "end_elevation_m": 216.08555561523693,
   "start_xy": [
    339047.46389047685,
    487743.2040803202
   ],
   "end_xy": [
    339062.357882979,
    487756.55207359727
   ]
  },
  "max_25m": {
   "gradient_pct": 18.755261329919563,
   "start_distance_m": 1561.0,
   "end_distance_m": 1586.0,
   "midpoint_distance_m": 1573.5,
   "start_elevation_m": 212.11133509593623,
   "end_elevation_m": 216.80015042841612,
   "start_xy": [
    339046.7193084336,
    487742.53654936183
   ],
   "end_xy": [
    339065.33661530097,
    487759.22174551105
   ]
  },
  "max_50m": {
   "gradient_pct": 17.902062912839995,
   "start_distance_m": 1543.0,
   "end_distance_m": 1593.0,
   "midpoint_distance_m": 1568.0,
   "start_elevation_m": 209.0551756514413,
   "end_elevation_m": 218.0062071078613,
   "start_xy": [
    339033.31447719375,
    487730.5236218634
   ],
   "end_xy": [
    339070.10629825393,
    487764.33938691387
   ]
  },
  "max_100m": {
   "gradient_pct": 16.46079373832697,
   "start_distance_m": 1498.0,
   "end_distance_m": 1598.0,
   "midpoint_distance_m": 1548.0,
   "start_elevation_m": 202.25714524277015,
   "end_elevation_m": 218.71793898109712,
   "start_xy": [
    338997.2164526218,
    487703.7450779059
   ],
   "end_xy": [
    339073.4645816137,
    487768.04369936866
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -25.149222137638674,
   "start_distance_m": 865.0,
   "end_distance_m": 870.0,
   "midpoint_distance_m": 867.5,
   "start_elevation_m": 128.44384602932462,
   "end_elevation_m": 127.18638492244268,
   "start_xy": [
    338587.79433944024,
    487228.3982461063
   ],
   "end_xy": [
    338591.08335667325,
    487232.1641938829
   ]
  },
  "min_10m": {
   "gradient_pct": -18.338500645798632,
   "start_distance_m": 864.0,
   "end_distance_m": 874.0,
   "midpoint_distance_m": 869.0,
   "start_elevation_m": 128.6269791300241,
   "end_elevation_m": 126.79312906544423,
   "start_xy": [
    338587.13636621484,
    487227.64520480216
   ],
   "end_xy": [
    338593.715392206,
    487235.1762345457
   ]
  },
  "min_20m": {
   "gradient_pct": -12.812265566242544,
   "start_distance_m": 859.0,
   "end_distance_m": 879.0,
   "midpoint_distance_m": 869.0,
   "start_elevation_m": 129.01615883325368,
   "end_elevation_m": 126.45370572000517,
   "start_xy": [
    338583.846321799,
    487223.8801539736
   ],
   "end_xy": [
    338597.0049005013,
    487238.9417535426
   ]
  },
  "min_25m": {
   "gradient_pct": -11.483999767246473,
   "start_distance_m": 1812.0,
   "end_distance_m": 1837.0,
   "midpoint_distance_m": 1824.5,
   "start_elevation_m": 226.80564902619707,
   "end_elevation_m": 223.93464908438546,
   "start_xy": [
    339262.855002107,
    487853.78346888785
   ],
   "end_xy": [
    339275.67607342434,
    487875.15077516745
   ]
  },
  "min_50m": {
   "gradient_pct": -10.192904570121243,
   "start_distance_m": 1786.0,
   "end_distance_m": 1836.0,
   "midpoint_distance_m": 1811.0,
   "start_elevation_m": 229.13947680756905,
   "end_elevation_m": 224.04302452250843,
   "start_xy": [
    339240.98721371585,
    487841.1238749154
   ],
   "end_xy": [
    339275.2141226195,
    487874.2638696179
   ]
  },
  "min_100m": {
   "gradient_pct": -8.6682153110211,
   "start_distance_m": 1781.0,
   "end_distance_m": 1881.0,
   "midpoint_distance_m": 1831.0,
   "start_elevation_m": 229.5053939436723,
   "end_elevation_m": 220.8371786326512,
   "start_xy": [
    339236.0206261435,
    487840.5468116883
   ],
   "end_xy": [
    339299.5610702622,
    487911.9560017627
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 37.509447799435236,
   "start_distance_m": 714.0,
   "end_distance_m": 716.0,
   "midpoint_distance_m": 715.0,
   "start_elevation_m": 108.70717589011447,
   "end_elevation_m": 109.45736484610318,
   "start_xy": [
    338500.7240322384,
    487105.2089502105
   ],
   "end_xy": [
    338501.8742233153,
    487106.84512269427
   ]
  },
  "max_3m": {
   "gradient_pct": 36.31002421319636,
   "start_distance_m": 714.0,
   "end_distance_m": 717.0,
   "midpoint_distance_m": 715.5,
   "start_elevation_m": 108.70717589011447,
   "end_elevation_m": 109.79647661651036,
   "start_xy": [
    338500.7240322384,
    487105.2089502105
   ],
   "end_xy": [
    338502.4499178663,
    487107.6627875038
   ]
  }
 },
 "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": 0.012,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.047,
   "windows_resited": [
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 677.0,
     "end_m": 702.0,
     "raw_pct": 21.76,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 680.0,
     "end_m": 700.0,
     "raw_pct": 23.95,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 682.0,
     "end_m": 692.0,
     "raw_pct": 28.07,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 380.0,
     "end_m": 385.0,
     "raw_pct": 35.88,
     "reason": "mask-edge"
    },
    {
     "window_m": 25.0,
     "start_m": 757.0,
     "end_m": 782.0,
     "raw_pct": 20.05,
     "reason": "mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 762.0,
     "end_m": 782.0,
     "raw_pct": 20.57,
     "reason": "mask-edge"
    },
    {
     "window_m": 10.0,
     "start_m": 772.0,
     "end_m": 782.0,
     "raw_pct": 21.57,
     "reason": "mask-edge"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.091,
   "obstruction_max_height_m": 23.91,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    283.0,
    288.0
   ],
   [
    378.0,
    395.0
   ],
   [
    675.0,
    704.0
   ],
   [
    755.0,
    788.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "extent": [
   "descends_at_end"
  ]
 },
 "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:27700",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/england/bulk_dtm_1m/SD3585.tif"
  ],
  "calculated_at": "2026-09-11T23:36:18+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk05.pbf",
  "osm_snapshot": "",
  "run_id": "texture-uk-england-260911",
  "elevation_provider": "Environment Agency",
  "elevation_dataset": "EA LIDAR Composite DTM 1m (2022)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Environment Agency",
  "elevation_coverage_id": "13787b9a-26a4-4775-8523-806d13af58fc__Lidar_Composite_Elevation_DTM_1m",
  "elevation_tile_ids": [
   "SD3585.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Staveley-in-Cartmel",
  "county": "Westmorland and Furness"
 }
}