{
 "ocl_version": "0.1.0",
 "name": "Chitcombe Rocks Lane",
 "slug": "chitcombe-rocks-lane",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 37.91815688989004,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 255.0,
   "end_distance_m": 257.0,
   "start_elevation_m": 267.4655496342092,
   "end_elevation_m": 268.223912772007,
   "min_gradient_pct": -18.42664117242805,
   "suppressed_max_gradient_pct": 45.51740087497507,
   "suppressed_location_m": [
    130.0,
    132.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 35.009571481634794,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 254.0,
   "end_distance_m": 257.0,
   "start_elevation_m": 267.17362562755795,
   "end_elevation_m": 268.223912772007,
   "min_gradient_pct": -12.759592538871326,
   "suppressed_max_gradient_pct": 42.83663523320721,
   "suppressed_location_m": [
    130.0,
    133.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.44595048922133,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 253.0,
   "end_distance_m": 258.0,
   "start_elevation_m": 266.9752071765097,
   "end_elevation_m": 268.49750470097075,
   "min_gradient_pct": -6.623228813343758,
   "suppressed_max_gradient_pct": 35.617930519136394,
   "suppressed_location_m": [
    129.0,
    134.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.694892161914595,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 248.0,
   "end_distance_m": 258.0,
   "start_elevation_m": 266.2280154847793,
   "end_elevation_m": 268.49750470097075,
   "min_gradient_pct": -2.5391119748843494,
   "suppressed_max_gradient_pct": 29.052959553965536,
   "suppressed_location_m": [
    123.0,
    133.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.21478198059316,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 247.0,
   "end_distance_m": 267.0,
   "start_elevation_m": 266.12813836744516,
   "end_elevation_m": 269.5710947635638,
   "min_gradient_pct": -2.1886765786828732,
   "suppressed_max_gradient_pct": 26.516807958294066,
   "suppressed_location_m": [
    114.0,
    134.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 15.48902796522043,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 242.0,
   "end_distance_m": 267.0,
   "start_elevation_m": 265.6988377722587,
   "end_elevation_m": 269.5710947635638,
   "min_gradient_pct": -2.0715357923570537,
   "suppressed_max_gradient_pct": 23.971374430435503,
   "suppressed_location_m": [
    109.0,
    134.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 14.001609249020134,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 539.0,
   "end_distance_m": 589.0,
   "start_elevation_m": 300.1583296773172,
   "end_elevation_m": 307.1591343018273,
   "min_gradient_pct": -1.8288935776745348,
   "suppressed_max_gradient_pct": 16.614759661765788,
   "suppressed_location_m": [
    117.0,
    167.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.246188918633152,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 427.0,
   "end_distance_m": 527.0,
   "start_elevation_m": 286.1609096907878,
   "end_elevation_m": 299.4070986094209,
   "min_gradient_pct": -1.7062684857503427,
   "suppressed_max_gradient_pct": 14.9742808917145,
   "suppressed_location_m": [
    95.0,
    195.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.401,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 131.0,
  "shape_class": "sustained"
 },
 "length_m": 1121.6746346243074,
 "start_elevation_m": 241.88335729357954,
 "end_elevation_m": 324.1626931930547,
 "endpoint_gain_m": 82.27933589947514,
 "overall_gradient_pct": 7.3354013151089665,
 "accumulated_ascent_m": 88.38888087124201,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.44595048922133,
   "start_distance_m": 253.0,
   "end_distance_m": 258.0,
   "midpoint_distance_m": 255.5,
   "start_elevation_m": 266.9752071765097,
   "end_elevation_m": 268.49750470097075,
   "start_xy": [
    302503.6622955237,
    130831.82474782343
   ],
   "end_xy": [
    302507.9195462418,
    130829.20257185804
   ]
  },
  "max_10m": {
   "gradient_pct": 22.694892161914595,
   "start_distance_m": 248.0,
   "end_distance_m": 258.0,
   "midpoint_distance_m": 253.0,
   "start_elevation_m": 266.2280154847793,
   "end_elevation_m": 268.49750470097075,
   "start_xy": [
    302499.4050350853,
    130834.44690799917
   ],
   "end_xy": [
    302507.9195462418,
    130829.20257185804
   ]
  },
  "max_20m": {
   "gradient_pct": 17.21478198059316,
   "start_distance_m": 247.0,
   "end_distance_m": 267.0,
   "midpoint_distance_m": 257.0,
   "start_elevation_m": 266.12813836744516,
   "end_elevation_m": 269.5710947635638,
   "start_xy": [
    302498.5539457613,
    130834.97192887816
   ],
   "end_xy": [
    302515.5825472268,
    130824.48257125112
   ]
  },
  "max_25m": {
   "gradient_pct": 15.48902796522043,
   "start_distance_m": 242.0,
   "end_distance_m": 267.0,
   "midpoint_distance_m": 254.5,
   "start_elevation_m": 265.6988377722587,
   "end_elevation_m": 269.5710947635638,
   "start_xy": [
    302494.2966948285,
    130837.59410447691
   ],
   "end_xy": [
    302515.5825472268,
    130824.48257125112
   ]
  },
  "max_50m": {
   "gradient_pct": 14.001609249020134,
   "start_distance_m": 539.0,
   "end_distance_m": 589.0,
   "midpoint_distance_m": 564.0,
   "start_elevation_m": 300.1583296773172,
   "end_elevation_m": 307.1591343018273,
   "start_xy": [
    302710.3680954302,
    130638.46293290915
   ],
   "end_xy": [
    302717.3012752657,
    130590.39691389086
   ]
  },
  "max_100m": {
   "gradient_pct": 13.246188918633152,
   "start_distance_m": 427.0,
   "end_distance_m": 527.0,
   "midpoint_distance_m": 477.0,
   "start_elevation_m": 286.1609096907878,
   "end_elevation_m": 299.4070986094209,
   "start_xy": [
    302640.25956601324,
    130725.4875684186
   ],
   "end_xy": [
    302703.69600891636,
    130648.43706221311
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.623228813343758,
   "start_distance_m": 809.0,
   "end_distance_m": 814.0,
   "midpoint_distance_m": 811.5,
   "start_elevation_m": 324.52098513246534,
   "end_elevation_m": 324.18982369179815,
   "start_xy": [
    302571.2944543269,
    130451.47663810753
   ],
   "end_xy": [
    302566.5365440284,
    130449.93966703436
   ]
  },
  "min_10m": {
   "gradient_pct": -2.5391119748843494,
   "start_distance_m": 914.0,
   "end_distance_m": 924.0,
   "midpoint_distance_m": 919.0,
   "start_elevation_m": 325.79789300815617,
   "end_elevation_m": 325.54398181066773,
   "start_xy": [
    302509.0625406191,
    130385.15936772795
   ],
   "end_xy": [
    302508.87353678036,
    130375.16115446405
   ]
  },
  "min_20m": {
   "gradient_pct": -2.1886765786828732,
   "start_distance_m": 910.0,
   "end_distance_m": 930.0,
   "midpoint_distance_m": 920.0,
   "start_elevation_m": 325.86684466412015,
   "end_elevation_m": 325.4291093483836,
   "start_xy": [
    302509.13840672135,
    130389.1586481384
   ],
   "end_xy": [
    302508.6924783194,
    130369.16397937531
   ]
  },
  "min_25m": {
   "gradient_pct": -2.0715357923570537,
   "start_distance_m": 901.0,
   "end_distance_m": 926.0,
   "midpoint_distance_m": 913.5,
   "start_elevation_m": 326.00684048551807,
   "end_elevation_m": 325.4889565374288,
   "start_xy": [
    302509.30839780107,
    130398.15704216127
   ],
   "end_xy": [
    302508.82649868913,
    130373.16173304305
   ]
  },
  "min_50m": {
   "gradient_pct": -1.8288935776745348,
   "start_distance_m": 910.0,
   "end_distance_m": 960.0,
   "midpoint_distance_m": 935.0,
   "start_elevation_m": 325.86684466412015,
   "end_elevation_m": 324.9523978752829,
   "start_xy": [
    302509.13840672135,
    130389.1586481384
   ],
   "end_xy": [
    302507.68847201276,
    130339.1807882641
   ]
  },
  "min_100m": {
   "gradient_pct": -1.7062684857503427,
   "start_distance_m": 877.0,
   "end_distance_m": 977.0,
   "midpoint_distance_m": 927.0,
   "start_elevation_m": 326.3681266294566,
   "end_elevation_m": 324.66185814370624,
   "start_xy": [
    302512.30485684343,
    130421.87686644272
   ],
   "end_xy": [
    302508.1634701721,
    130322.20816287512
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 37.91815688989004,
   "start_distance_m": 255.0,
   "end_distance_m": 257.0,
   "midpoint_distance_m": 256.0,
   "start_elevation_m": 267.4655496342092,
   "end_elevation_m": 268.223912772007,
   "start_xy": [
    302505.36516522674,
    130830.77582795915
   ],
   "end_xy": [
    302507.06802911294,
    130829.72689864255
   ]
  },
  "max_3m": {
   "gradient_pct": 35.009571481634794,
   "start_distance_m": 254.0,
   "end_distance_m": 257.0,
   "midpoint_distance_m": 255.5,
   "start_elevation_m": 267.17362562755795,
   "end_elevation_m": 268.223912772007,
   "start_xy": [
    302504.5140757925,
    130831.30084865914
   ],
   "end_xy": [
    302507.06802911294,
    130829.72689864255
   ]
  }
 },
 "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": {
  "texture_suppression": {
   "masked_fraction": 0.053,
   "windows_resited": [
    20.0,
    25.0,
    50.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 109.0,
     "end_m": 134.0,
     "raw_pct": 23.97,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 114.0,
     "end_m": 134.0,
     "raw_pct": 26.52,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 123.0,
     "end_m": 133.0,
     "raw_pct": 29.05,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 129.0,
     "end_m": 134.0,
     "raw_pct": 35.62,
     "reason": "hump+short-step"
    },
    {
     "window_m": 25.0,
     "start_m": 156.0,
     "end_m": 181.0,
     "raw_pct": 18.99,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 161.0,
     "end_m": 181.0,
     "raw_pct": 20.09,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.191,
   "obstruction_max_height_m": 14.18,
   "flagged_windows_m": [
    10,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    107.0,
    136.0
   ],
   [
    154.0,
    183.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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/ST0030.tif"
  ],
  "calculated_at": "2026-09-11T23:27:07+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk02.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": [
   "ST0030.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Stolford",
  "county": "Somerset"
 }
}