{
 "ocl_version": "0.1.0",
 "name": "Crancombe Lane",
 "slug": "crancombe-lane",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.13206194678706,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 115.0,
   "end_distance_m": 117.0,
   "start_elevation_m": 23.365468579885707,
   "end_elevation_m": 24.02810981882145,
   "min_gradient_pct": -18.584285328599393,
   "suppressed_max_gradient_pct": 72.41712028986669,
   "suppressed_location_m": [
    634.0,
    636.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.075061750934207,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 114.0,
   "end_distance_m": 117.0,
   "start_elevation_m": 23.275857966293422,
   "end_elevation_m": 24.02810981882145,
   "min_gradient_pct": -15.370560704335409,
   "suppressed_max_gradient_pct": 61.315843142505365,
   "suppressed_location_m": [
    633.0,
    636.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 18.553543332295845,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 369.0,
   "end_distance_m": 374.0,
   "start_elevation_m": 47.41388549132453,
   "end_elevation_m": 48.34156265793932,
   "min_gradient_pct": -14.515500777853276,
   "suppressed_max_gradient_pct": 43.099732142618166,
   "suppressed_location_m": [
    633.0,
    638.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 13.818388307650446,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 140.0,
   "end_distance_m": 150.0,
   "start_elevation_m": 24.61993764108965,
   "end_elevation_m": 26.001776471854694,
   "min_gradient_pct": -10.423792598741386,
   "suppressed_max_gradient_pct": 31.16625865871988,
   "suppressed_location_m": [
    101.0,
    111.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 12.608860473754344,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 139.0,
   "end_distance_m": 159.0,
   "start_elevation_m": 24.50160129723894,
   "end_elevation_m": 27.023373391989807,
   "min_gradient_pct": -2.339307399387991,
   "suppressed_max_gradient_pct": 25.530314031105874,
   "suppressed_location_m": [
    91.0,
    111.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 12.509931731934941,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 138.0,
   "end_distance_m": 163.0,
   "start_elevation_m": 24.37072007485985,
   "end_elevation_m": 27.498203007843586,
   "min_gradient_pct": -0.09258695915673343,
   "suppressed_max_gradient_pct": 23.838454148100865,
   "suppressed_location_m": [
    78.0,
    103.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 11.448813071606047,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 136.0,
   "end_distance_m": 186.0,
   "start_elevation_m": 24.207147261762323,
   "end_elevation_m": 29.931553797565346,
   "min_gradient_pct": 2.5293242299194247,
   "suppressed_max_gradient_pct": 21.315935527567326,
   "suppressed_location_m": [
    67.0,
    117.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 10.870952874396203,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 135.0,
   "end_distance_m": 235.0,
   "start_elevation_m": 24.068513813550553,
   "end_elevation_m": 34.939466687946755,
   "min_gradient_pct": 3.7382120909186654,
   "suppressed_max_gradient_pct": 14.651655928130966,
   "suppressed_location_m": [
    70.0,
    170.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.379,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 62.0,
  "shape_class": "sustained"
 },
 "length_m": 674.9600931421744,
 "start_elevation_m": 9.233352402038333,
 "end_elevation_m": 65.57984365248949,
 "endpoint_gain_m": 56.34649125045115,
 "overall_gradient_pct": 8.348121884975244,
 "accumulated_ascent_m": 60.15018632902817,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 18.553543332295845,
   "start_distance_m": 369.0,
   "end_distance_m": 374.0,
   "midpoint_distance_m": 371.5,
   "start_elevation_m": 47.41388549132453,
   "end_elevation_m": 48.34156265793932,
   "start_xy": [
    333644.557356382,
    140243.6550837019
   ],
   "end_xy": [
    333646.662441911,
    140248.19034717444
   ]
  },
  "max_10m": {
   "gradient_pct": 13.818388307650446,
   "start_distance_m": 140.0,
   "end_distance_m": 150.0,
   "midpoint_distance_m": 145.0,
   "start_elevation_m": 24.61993764108965,
   "end_elevation_m": 26.001776471854694,
   "start_xy": [
    333530.2496137799,
    140049.01103662467
   ],
   "end_xy": [
    333533.96232293104,
    140058.2962441886
   ]
  },
  "max_20m": {
   "gradient_pct": 12.608860473754344,
   "start_distance_m": 139.0,
   "end_distance_m": 159.0,
   "midpoint_distance_m": 149.0,
   "start_elevation_m": 24.50160129723894,
   "end_elevation_m": 27.023373391989807,
   "start_xy": [
    333529.8778807948,
    140048.0826969312
   ],
   "end_xy": [
    333538.3745061271,
    140066.14043156625
   ]
  },
  "max_25m": {
   "gradient_pct": 12.509931731934941,
   "start_distance_m": 138.0,
   "end_distance_m": 163.0,
   "midpoint_distance_m": 150.5,
   "start_elevation_m": 24.37072007485985,
   "end_elevation_m": 27.498203007843586,
   "start_xy": [
    333529.50666002394,
    140047.154152297
   ],
   "end_xy": [
    333540.3407221773,
    140069.62381913912
   ]
  },
  "max_50m": {
   "gradient_pct": 11.448813071606047,
   "start_distance_m": 136.0,
   "end_distance_m": 186.0,
   "midpoint_distance_m": 161.0,
   "start_elevation_m": 24.207147261762323,
   "end_elevation_m": 29.931553797565346,
   "start_xy": [
    333528.76456843293,
    140045.2969231962
   ],
   "end_xy": [
    333551.6468655689,
    140089.65307298888
   ]
  },
  "max_100m": {
   "gradient_pct": 10.870952874396203,
   "start_distance_m": 135.0,
   "end_distance_m": 235.0,
   "midpoint_distance_m": 185.0,
   "start_elevation_m": 24.068513813550553,
   "end_elevation_m": 34.939466687946755,
   "start_xy": [
    333528.39283538476,
    140044.368583528
   ],
   "end_xy": [
    333580.1266722116,
    140129.135329506
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -14.515500777853276,
   "start_distance_m": 645.0,
   "end_distance_m": 650.0,
   "midpoint_distance_m": 647.5,
   "start_elevation_m": 64.9144926491325,
   "end_elevation_m": 64.18871761023983,
   "start_xy": [
    333754.80190103804,
    140495.37754438806
   ],
   "end_xy": [
    333757.44503140217,
    140499.62181753866
   ]
  },
  "min_10m": {
   "gradient_pct": -10.423792598741386,
   "start_distance_m": 640.0,
   "end_distance_m": 650.0,
   "midpoint_distance_m": 645.0,
   "start_elevation_m": 65.23109687011397,
   "end_elevation_m": 64.18871761023983,
   "start_xy": [
    333752.1598827642,
    140491.13257853556
   ],
   "end_xy": [
    333757.44503140217,
    140499.62181753866
   ]
  },
  "min_20m": {
   "gradient_pct": -2.339307399387991,
   "start_distance_m": 640.0,
   "end_distance_m": 660.0,
   "midpoint_distance_m": 650.0,
   "start_elevation_m": 65.23109687011397,
   "end_elevation_m": 64.76323539023637,
   "start_xy": [
    333752.1598827642,
    140491.13257853556
   ],
   "end_xy": [
    333762.57951845275,
    140508.1976309493
   ]
  },
  "min_25m": {
   "gradient_pct": -0.09258695915673343,
   "start_distance_m": 640.0,
   "end_distance_m": 665.0,
   "midpoint_distance_m": 652.5,
   "start_elevation_m": 65.23109687011397,
   "end_elevation_m": 65.20795013032479,
   "start_xy": [
    333752.1598827642,
    140491.13257853556
   ],
   "end_xy": [
    333764.8885172991,
    140512.63255161102
   ]
  },
  "min_50m": {
   "gradient_pct": 2.5293242299194247,
   "start_distance_m": 583.0,
   "end_distance_m": 633.0,
   "midpoint_distance_m": 608.0,
   "start_elevation_m": 61.30581356039696,
   "end_elevation_m": 62.570475675356676,
   "start_xy": [
    333728.8532330097,
    140439.33254315448
   ],
   "end_xy": [
    333748.46095287567,
    140485.18969127166
   ]
  },
  "min_100m": {
   "gradient_pct": 3.7382120909186654,
   "start_distance_m": 533.0,
   "end_distance_m": 633.0,
   "midpoint_distance_m": 583.0,
   "start_elevation_m": 58.83226358443801,
   "end_elevation_m": 62.570475675356676,
   "start_xy": [
    333715.24505092367,
    140391.2332887281
   ],
   "end_xy": [
    333748.46095287567,
    140485.18969127166
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.13206194678706,
   "start_distance_m": 115.0,
   "end_distance_m": 117.0,
   "midpoint_distance_m": 116.0,
   "start_elevation_m": 23.365468579885707,
   "end_elevation_m": 24.02810981882145,
   "start_xy": [
    333520.96881142556,
    140025.79753588772
   ],
   "end_xy": [
    333521.7109073527,
    140027.6547632545
   ]
  },
  "max_3m": {
   "gradient_pct": 25.075061750934207,
   "start_distance_m": 114.0,
   "end_distance_m": 117.0,
   "midpoint_distance_m": 115.5,
   "start_elevation_m": 23.275857966293422,
   "end_elevation_m": 24.02810981882145,
   "start_xy": [
    333520.5975949539,
    140024.86898953427
   ],
   "end_xy": [
    333521.7109073527,
    140027.6547632545
   ]
  }
 },
 "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
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.067,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 78.0,
     "end_m": 103.0,
     "raw_pct": 23.84,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 91.0,
     "end_m": 111.0,
     "raw_pct": 25.53,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 101.0,
     "end_m": 111.0,
     "raw_pct": 31.17,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 106.0,
     "end_m": 111.0,
     "raw_pct": 34.89,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.109,
   "obstruction_max_height_m": 10.88,
   "flagged_windows_m": [
    2,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    76.0,
    113.0
   ],
   [
    632.0,
    638.0
   ]
  ],
  "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:27700",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/england/bulk_dtm_1m/ST3035.tif",
   "data/cache/england/bulk_dtm_1m/ST3040.tif"
  ],
  "calculated_at": "2026-09-11T23:24:55+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk03.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": [
   "ST3035.tif",
   "ST3040.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Bawdrip",
  "county": "Somerset"
 }
}