{
 "ocl_version": "0.1.0",
 "name": "Molland Hill",
 "slug": "molland-hill",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 37.29423096987148,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1376.0,
   "end_distance_m": 1378.0,
   "start_elevation_m": 238.60343861059562,
   "end_elevation_m": 239.34932322999305,
   "min_gradient_pct": -16.43716651990843,
   "suppressed_max_gradient_pct": 79.39364235994759,
   "suppressed_location_m": [
    193.0,
    195.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.0373237669581,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1375.0,
   "end_distance_m": 1378.0,
   "start_elevation_m": 238.3582035169843,
   "end_elevation_m": 239.34932322999305,
   "min_gradient_pct": -11.729390090256212,
   "suppressed_max_gradient_pct": 61.76655838274693,
   "suppressed_location_m": [
    192.0,
    195.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.242557595612652,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1373.0,
   "end_distance_m": 1378.0,
   "start_elevation_m": 237.78719535021241,
   "end_elevation_m": 239.34932322999305,
   "min_gradient_pct": -12.306226089364145,
   "suppressed_max_gradient_pct": 46.61685351419976,
   "suppressed_location_m": [
    190.0,
    195.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.071249570717328,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 84.0,
   "end_distance_m": 94.0,
   "start_elevation_m": 167.60424234570772,
   "end_elevation_m": 169.71136730277945,
   "min_gradient_pct": -10.609442734593415,
   "suppressed_max_gradient_pct": 30.11995409198363,
   "suppressed_location_m": [
    185.0,
    195.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 18.33969198876332,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 380.0,
   "end_distance_m": 400.0,
   "start_elevation_m": 207.00171797749005,
   "end_elevation_m": 210.6696563752427,
   "min_gradient_pct": -10.410059840510684,
   "suppressed_max_gradient_pct": 23.74188495503745,
   "suppressed_location_m": [
    334.0,
    354.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.315442146488977,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 375.0,
   "end_distance_m": 400.0,
   "start_elevation_m": 206.34079583862047,
   "end_elevation_m": 210.6696563752427,
   "min_gradient_pct": -10.28012699288729,
   "suppressed_max_gradient_pct": 20.65367074904725,
   "suppressed_location_m": [
    331.0,
    356.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 13.366285524255261,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 440.0,
   "end_distance_m": 490.0,
   "start_elevation_m": 214.1967571940544,
   "end_elevation_m": 220.87989995618204,
   "min_gradient_pct": -9.577462640436238,
   "suppressed_max_gradient_pct": 17.516363767153905,
   "suppressed_location_m": [
    206.0,
    256.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 12.414780112668893,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 423.0,
   "end_distance_m": 523.0,
   "start_elevation_m": 212.10763536676433,
   "end_elevation_m": 224.52241547943322,
   "min_gradient_pct": -7.393972716955886,
   "suppressed_max_gradient_pct": 15.623279804270423,
   "suppressed_location_m": [
    218.0,
    318.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.502,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 61.0,
  "shape_class": "stepped"
 },
 "length_m": 1801.842156125944,
 "start_elevation_m": 160.60220856933415,
 "end_elevation_m": 259.798272442444,
 "endpoint_gain_m": 99.19606387310984,
 "overall_gradient_pct": 5.505258245616066,
 "accumulated_ascent_m": 121.2483605038801,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.242557595612652,
   "start_distance_m": 1373.0,
   "end_distance_m": 1378.0,
   "midpoint_distance_m": 1375.5,
   "start_elevation_m": 237.78719535021241,
   "end_elevation_m": 239.34932322999305,
   "start_xy": [
    270866.08230227424,
    133575.1438939991
   ],
   "end_xy": [
    270868.89926552074,
    133571.01294792158
   ]
  },
  "max_10m": {
   "gradient_pct": 21.071249570717328,
   "start_distance_m": 84.0,
   "end_distance_m": 94.0,
   "midpoint_distance_m": 89.0,
   "start_elevation_m": 167.60424234570772,
   "end_elevation_m": 169.71136730277945,
   "start_xy": [
    270089.661292105,
    134478.71971153544
   ],
   "end_xy": [
    270087.7938590258,
    134468.93950430155
   ]
  },
  "max_20m": {
   "gradient_pct": 18.33969198876332,
   "start_distance_m": 380.0,
   "end_distance_m": 400.0,
   "midpoint_distance_m": 390.0,
   "start_elevation_m": 207.00171797749005,
   "end_elevation_m": 210.6696563752427,
   "start_xy": [
    270279.2576381709,
    134351.6085465013
   ],
   "end_xy": [
    270293.8305000002,
    134337.91067651077
   ]
  },
  "max_25m": {
   "gradient_pct": 17.315442146488977,
   "start_distance_m": 375.0,
   "end_distance_m": 400.0,
   "midpoint_distance_m": 387.5,
   "start_elevation_m": 206.34079583862047,
   "end_elevation_m": 210.6696563752427,
   "start_xy": [
    270275.6138999716,
    134355.03245750273
   ],
   "end_xy": [
    270293.8305000002,
    134337.91067651077
   ]
  },
  "max_50m": {
   "gradient_pct": 13.366285524255261,
   "start_distance_m": 440.0,
   "end_distance_m": 490.0,
   "midpoint_distance_m": 465.0,
   "start_elevation_m": 214.1967571940544,
   "end_elevation_m": 220.87989995618204,
   "start_xy": [
    270322.6151867561,
    134310.14148002386
   ],
   "end_xy": [
    270360.84876258887,
    134278.6128168461
   ]
  },
  "max_100m": {
   "gradient_pct": 12.414780112668893,
   "start_distance_m": 423.0,
   "end_distance_m": 523.0,
   "midpoint_distance_m": 473.0,
   "start_elevation_m": 212.10763536676433,
   "end_elevation_m": 224.52241547943322,
   "start_xy": [
    270310.56241525506,
    134322.13025281407
   ],
   "end_xy": [
    270389.4844627465,
    134262.23015922587
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.306226089364145,
   "start_distance_m": 1363.0,
   "end_distance_m": 1368.0,
   "midpoint_distance_m": 1365.5,
   "start_elevation_m": 238.24741765821045,
   "end_elevation_m": 237.63210635374224,
   "start_xy": [
    270860.4479108266,
    133583.4054683077
   ],
   "end_xy": [
    270863.2652299643,
    133579.2747652212
   ]
  },
  "min_10m": {
   "gradient_pct": -10.609442734593415,
   "start_distance_m": 1191.0,
   "end_distance_m": 1201.0,
   "midpoint_distance_m": 1196.0,
   "start_elevation_m": 236.899916883932,
   "end_elevation_m": 235.83897261047267,
   "start_xy": [
    270757.61121091864,
    133720.46709253205
   ],
   "end_xy": [
    270763.3250777072,
    133712.2602840672
   ]
  },
  "min_20m": {
   "gradient_pct": -10.410059840510684,
   "start_distance_m": 1191.0,
   "end_distance_m": 1211.0,
   "midpoint_distance_m": 1201.0,
   "start_elevation_m": 236.899916883932,
   "end_elevation_m": 234.81790491582987,
   "start_xy": [
    270757.61121091864,
    133720.46709253205
   ],
   "end_xy": [
    270769.0389447636,
    133704.0534752173
   ]
  },
  "min_25m": {
   "gradient_pct": -10.28012699288729,
   "start_distance_m": 1198.0,
   "end_distance_m": 1223.0,
   "midpoint_distance_m": 1210.5,
   "start_elevation_m": 236.17419129564053,
   "end_elevation_m": 233.6041595474187,
   "start_xy": [
    270761.61100575083,
    133714.7223875281
   ],
   "end_xy": [
    270775.8959069181,
    133694.20552963263
   ]
  },
  "min_50m": {
   "gradient_pct": -9.577462640436238,
   "start_distance_m": 1181.0,
   "end_distance_m": 1231.0,
   "midpoint_distance_m": 1206.0,
   "start_elevation_m": 237.68407037535172,
   "end_elevation_m": 232.8953390551336,
   "start_xy": [
    270751.8971298626,
    133728.6737508963
   ],
   "end_xy": [
    270780.4671464646,
    133687.64018520594
   ]
  },
  "min_100m": {
   "gradient_pct": -7.393972716955886,
   "start_distance_m": 1137.0,
   "end_distance_m": 1237.0,
   "midpoint_distance_m": 1187.0,
   "start_elevation_m": 239.8838772315799,
   "end_elevation_m": 232.48990451462402,
   "start_xy": [
    270726.755995612,
    133764.7836245151
   ],
   "end_xy": [
    270783.89492643083,
    133682.71572386462
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 37.29423096987148,
   "start_distance_m": 1376.0,
   "end_distance_m": 1378.0,
   "midpoint_distance_m": 1377.0,
   "start_elevation_m": 238.60343861059562,
   "end_elevation_m": 239.34932322999305,
   "start_xy": [
    270867.77215761563,
    133572.66510623353
   ],
   "end_xy": [
    270868.89926552074,
    133571.01294792158
   ]
  },
  "max_3m": {
   "gradient_pct": 33.0373237669581,
   "start_distance_m": 1375.0,
   "end_distance_m": 1378.0,
   "midpoint_distance_m": 1376.5,
   "start_elevation_m": 238.3582035169843,
   "end_elevation_m": 239.34932322999305,
   "start_xy": [
    270867.2089449627,
    133573.4914182252
   ],
   "end_xy": [
    270868.89926552074,
    133571.01294792158
   ]
  }
 },
 "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": 0.003,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.081,
   "windows_resited": [
    10.0,
    20.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 4,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 331.0,
     "end_m": 356.0,
     "raw_pct": 20.65,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 334.0,
     "end_m": 354.0,
     "raw_pct": 23.74,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 335.0,
     "end_m": 345.0,
     "raw_pct": 30.08,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 339.0,
     "end_m": 344.0,
     "raw_pct": 35.04,
     "reason": "hump"
    },
    {
     "window_m": 25.0,
     "start_m": 230.0,
     "end_m": 255.0,
     "raw_pct": 20.62,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 235.0,
     "end_m": 255.0,
     "raw_pct": 21.41,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 533.0,
     "end_m": 538.0,
     "raw_pct": 33.82,
     "reason": "hump"
    },
    {
     "window_m": 25.0,
     "start_m": 291.0,
     "end_m": 316.0,
     "raw_pct": 20.4,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 125.0,
     "end_m": 145.0,
     "raw_pct": 18.45,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 37.0,
     "end_m": 47.0,
     "raw_pct": 21.56,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.028,
   "obstruction_max_height_m": 11.96,
   "flagged_windows_m": [
    2,
    3,
    5
   ]
  },
  "excluded_ranges_m": [
   [
    35.0,
    49.0
   ],
   [
    123.0,
    147.0
   ],
   [
    191.0,
    196.0
   ],
   [
    228.0,
    257.0
   ],
   [
    289.0,
    318.0
   ],
   [
    329.0,
    358.0
   ],
   [
    531.0,
    540.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "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/SS7030.tif"
  ],
  "calculated_at": "2026-09-11T23:23:56+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": [
   "SS7030.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "High Bray",
  "county": "Devon"
 }
}