{
 "ocl_version": "0.1.0",
 "name": "Meggett Lane",
 "slug": "meggett-lane",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 36.50926384858195,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 262.0,
   "end_distance_m": 264.0,
   "start_elevation_m": 71.52852631620375,
   "end_elevation_m": 72.25871159317539,
   "min_gradient_pct": -36.10468979619128,
   "suppressed_max_gradient_pct": 49.901740942762274,
   "suppressed_location_m": [
    423.0,
    425.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.52918617560374,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 261.0,
   "end_distance_m": 264.0,
   "start_elevation_m": 71.31283600790728,
   "end_elevation_m": 72.25871159317539,
   "min_gradient_pct": -27.274161173896516,
   "suppressed_max_gradient_pct": 46.14421079939556,
   "suppressed_location_m": [
    422.0,
    425.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.00810961801642,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 261.0,
   "end_distance_m": 266.0,
   "start_elevation_m": 71.31283600790728,
   "end_elevation_m": 72.6132414888081,
   "min_gradient_pct": -18.02366051699991,
   "suppressed_max_gradient_pct": 39.450791271052026,
   "suppressed_location_m": [
    421.0,
    426.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.339258189823482,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 499.0,
   "end_distance_m": 509.0,
   "start_elevation_m": 100.16241398061558,
   "end_elevation_m": 102.29633979959793,
   "min_gradient_pct": -16.24439899282116,
   "suppressed_max_gradient_pct": 30.121829060001915,
   "suppressed_location_m": [
    676.0,
    686.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.818217787029866,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 489.0,
   "end_distance_m": 509.0,
   "start_elevation_m": 98.33269624219196,
   "end_elevation_m": 102.29633979959793,
   "min_gradient_pct": -14.51142931697422,
   "suppressed_max_gradient_pct": 25.153668369658817,
   "suppressed_location_m": [
    597.0,
    617.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 19.00215400252756,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 484.0,
   "end_distance_m": 509.0,
   "start_elevation_m": 97.54580129896604,
   "end_elevation_m": 102.29633979959793,
   "min_gradient_pct": -13.42483462239275,
   "suppressed_max_gradient_pct": 23.754980942190628,
   "suppressed_location_m": [
    663.0,
    688.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.14320908817919,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 459.0,
   "end_distance_m": 509.0,
   "start_elevation_m": 93.72473525550834,
   "end_elevation_m": 102.29633979959793,
   "min_gradient_pct": -9.47419859580448,
   "suppressed_max_gradient_pct": 19.613937489832324,
   "suppressed_location_m": [
    567.0,
    617.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.722984361033582,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 435.0,
   "end_distance_m": 535.0,
   "start_elevation_m": 90.07586723423634,
   "end_elevation_m": 105.79885159526992,
   "min_gradient_pct": -6.807727787421811,
   "suppressed_max_gradient_pct": 16.554138476299542,
   "suppressed_location_m": [
    409.0,
    509.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.459,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 127.0,
  "shape_class": "stepped"
 },
 "length_m": 970.1379530347377,
 "start_elevation_m": 69.75832126867539,
 "end_elevation_m": 138.54217995410173,
 "endpoint_gain_m": 68.78385868542634,
 "overall_gradient_pct": 7.090111099175129,
 "accumulated_ascent_m": 84.83265156670362,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.00810961801642,
   "start_distance_m": 261.0,
   "end_distance_m": 266.0,
   "midpoint_distance_m": 263.5,
   "start_elevation_m": 71.31283600790728,
   "end_elevation_m": 72.6132414888081,
   "start_xy": [
    625094.5633517788,
    141605.4567059237
   ],
   "end_xy": [
    625099.1726188762,
    141603.51901355197
   ]
  },
  "max_10m": {
   "gradient_pct": 21.339258189823482,
   "start_distance_m": 499.0,
   "end_distance_m": 509.0,
   "midpoint_distance_m": 504.0,
   "start_elevation_m": 100.16241398061558,
   "end_elevation_m": 102.29633979959793,
   "start_xy": [
    625265.1058347253,
    141451.98955480335
   ],
   "end_xy": [
    625268.4830056186,
    141442.57707903255
   ]
  },
  "max_20m": {
   "gradient_pct": 19.818217787029866,
   "start_distance_m": 489.0,
   "end_distance_m": 509.0,
   "midpoint_distance_m": 499.0,
   "start_elevation_m": 98.33269624219196,
   "end_elevation_m": 102.29633979959793,
   "start_xy": [
    625261.7289821041,
    141461.40214449694
   ],
   "end_xy": [
    625268.4830056186,
    141442.57707903255
   ]
  },
  "max_25m": {
   "gradient_pct": 19.00215400252756,
   "start_distance_m": 484.0,
   "end_distance_m": 509.0,
   "midpoint_distance_m": 496.5,
   "start_elevation_m": 97.54580129896604,
   "end_elevation_m": 102.29633979959793,
   "start_xy": [
    625260.0408395947,
    141466.10854124662
   ],
   "end_xy": [
    625268.4830056186,
    141442.57707903255
   ]
  },
  "max_50m": {
   "gradient_pct": 17.14320908817919,
   "start_distance_m": 459.0,
   "end_distance_m": 509.0,
   "midpoint_distance_m": 484.0,
   "start_elevation_m": 93.72473525550834,
   "end_elevation_m": 102.29633979959793,
   "start_xy": [
    625250.500970356,
    141489.2140346151
   ],
   "end_xy": [
    625268.4830056186,
    141442.57707903255
   ]
  },
  "max_100m": {
   "gradient_pct": 15.722984361033582,
   "start_distance_m": 435.0,
   "end_distance_m": 535.0,
   "midpoint_distance_m": 485.0,
   "start_elevation_m": 90.07586723423634,
   "end_elevation_m": 105.79885159526992,
   "start_xy": [
    625236.6708589942,
    141508.58728635285
   ],
   "end_xy": [
    625277.2620139803,
    141418.10405575298
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -18.02366051699991,
   "start_distance_m": 105.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 107.5,
   "start_elevation_m": 64.41783384499425,
   "end_elevation_m": 63.51665081914425,
   "start_xy": [
    624970.4967771224,
    141684.9632769086
   ],
   "end_xy": [
    624973.6340138529,
    141681.06998283826
   ]
  },
  "min_10m": {
   "gradient_pct": -16.24439899282116,
   "start_distance_m": 107.0,
   "end_distance_m": 117.0,
   "midpoint_distance_m": 112.0,
   "start_elevation_m": 64.12196230456739,
   "end_elevation_m": 62.497522405285274,
   "start_xy": [
    624971.7518906198,
    141683.40613589666
   ],
   "end_xy": [
    624978.0269706505,
    141675.62003635973
   ]
  },
  "min_20m": {
   "gradient_pct": -14.51142931697422,
   "start_distance_m": 105.0,
   "end_distance_m": 125.0,
   "midpoint_distance_m": 115.0,
   "start_elevation_m": 64.41783384499425,
   "end_elevation_m": 61.515547981599404,
   "start_xy": [
    624970.4967771224,
    141684.9632769086
   ],
   "end_xy": [
    624983.0463312435,
    141669.39058911038
   ]
  },
  "min_25m": {
   "gradient_pct": -13.42483462239275,
   "start_distance_m": 104.0,
   "end_distance_m": 129.0,
   "midpoint_distance_m": 116.5,
   "start_elevation_m": 64.50245217531874,
   "end_elevation_m": 61.14624351972055,
   "start_xy": [
    624969.8697674925,
    141685.74228841293
   ],
   "end_xy": [
    624985.5560699679,
    141666.27591320852
   ]
  },
  "min_50m": {
   "gradient_pct": -9.47419859580448,
   "start_distance_m": 78.0,
   "end_distance_m": 128.0,
   "midpoint_distance_m": 103.0,
   "start_elevation_m": 65.90837671003793,
   "end_elevation_m": 61.17127741213569,
   "start_xy": [
    624953.5552430253,
    141705.9866985403
   ],
   "end_xy": [
    624984.9290604952,
    141667.05492483932
   ]
  },
  "min_100m": {
   "gradient_pct": -6.807727787421811,
   "start_distance_m": 27.0,
   "end_distance_m": 127.0,
   "midpoint_distance_m": 77.0,
   "start_elevation_m": 68.03834585003365,
   "end_elevation_m": 61.23061806261184,
   "start_xy": [
    624921.5550223498,
    141745.69797223216
   ],
   "end_xy": [
    624984.300956403,
    141667.833054166
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 36.50926384858195,
   "start_distance_m": 262.0,
   "end_distance_m": 264.0,
   "midpoint_distance_m": 263.0,
   "start_elevation_m": 71.52852631620375,
   "end_elevation_m": 72.25871159317539,
   "start_xy": [
    625095.4853694249,
    141605.069558203
   ],
   "end_xy": [
    625097.3291478014,
    141604.2946514675
   ]
  },
  "max_3m": {
   "gradient_pct": 31.52918617560374,
   "start_distance_m": 261.0,
   "end_distance_m": 264.0,
   "midpoint_distance_m": 262.5,
   "start_elevation_m": 71.31283600790728,
   "end_elevation_m": 72.25871159317539,
   "start_xy": [
    625094.5633517788,
    141605.4567059237
   ],
   "end_xy": [
    625097.3291478014,
    141604.2946514675
   ]
  }
 },
 "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": 0.082,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 663.0,
     "end_m": 688.0,
     "raw_pct": 23.75,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 597.0,
     "end_m": 617.0,
     "raw_pct": 25.15,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 676.0,
     "end_m": 686.0,
     "raw_pct": 30.12,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 421.0,
     "end_m": 426.0,
     "raw_pct": 39.45,
     "reason": "short-step"
    },
    {
     "window_m": 10.0,
     "start_m": 293.0,
     "end_m": 303.0,
     "raw_pct": 25.43,
     "reason": "hump+short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 297.0,
     "end_m": 302.0,
     "raw_pct": 36.23,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "excluded_ranges_m": [
   [
    291.0,
    305.0
   ],
   [
    419.0,
    428.0
   ],
   [
    595.0,
    619.0
   ],
   [
    661.0,
    690.0
   ]
  ],
  "review": [],
  "extent": [
   "descends_at_start"
  ]
 },
 "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/TR2040.tif",
   "data/cache/england/bulk_dtm_1m/TR2540.tif"
  ],
  "calculated_at": "2026-09-11T23:37:28+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": [
   "TR2040.tif",
   "TR2540.tif"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 surface model missing: unexpected zip contents for TR2040: []",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Alkham",
  "county": "Kent"
 }
}