{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (51.2236, -3.8966)",
 "slug": "discovered-lane-51-2236-3-8966",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 42.84487292376156,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 790.0,
   "end_distance_m": 792.0,
   "start_elevation_m": 111.80535032304854,
   "end_elevation_m": 112.66224778152377,
   "min_gradient_pct": -29.24508579812084,
   "suppressed_max_gradient_pct": 83.46402622652747,
   "suppressed_location_m": [
    931.0,
    933.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 35.35248522763984,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 790.0,
   "end_distance_m": 793.0,
   "start_elevation_m": 111.80535032304854,
   "end_elevation_m": 112.86592487987774,
   "min_gradient_pct": -23.728726039316683,
   "suppressed_max_gradient_pct": 67.09794843075609,
   "suppressed_location_m": [
    930.0,
    933.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.41100742656124,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 809.0,
   "end_distance_m": 814.0,
   "start_elevation_m": 114.07933372066228,
   "end_elevation_m": 115.24988409199034,
   "min_gradient_pct": -17.31797319204972,
   "suppressed_max_gradient_pct": 63.565413620522975,
   "suppressed_location_m": [
    928.0,
    933.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.061701858014942,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1647.0,
   "end_distance_m": 1657.0,
   "start_elevation_m": 208.65675398059858,
   "end_elevation_m": 210.66292416640007,
   "min_gradient_pct": -12.551485498656447,
   "suppressed_max_gradient_pct": 41.17575006013638,
   "suppressed_location_m": [
    923.0,
    933.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 15.28590842736989,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1647.0,
   "end_distance_m": 1667.0,
   "start_elevation_m": 208.65675398059858,
   "end_elevation_m": 211.71393566607256,
   "min_gradient_pct": -5.660624936207768,
   "suppressed_max_gradient_pct": 27.40935770606875,
   "suppressed_location_m": [
    923.0,
    943.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 14.980840739317614,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 937.0,
   "end_distance_m": 962.0,
   "start_elevation_m": 130.0658862086211,
   "end_elevation_m": 133.8110963934505,
   "min_gradient_pct": -3.4023230597458394,
   "suppressed_max_gradient_pct": 23.601421998746446,
   "suppressed_location_m": [
    919.0,
    944.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 14.4964248791307,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1507.0,
   "end_distance_m": 1557.0,
   "start_elevation_m": 193.30291169473728,
   "end_elevation_m": 200.55112413430263,
   "min_gradient_pct": 0.9856462676638955,
   "suppressed_max_gradient_pct": 18.664408176661738,
   "suppressed_location_m": [
    920.0,
    970.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.393406701788535,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1488.0,
   "end_distance_m": 1588.0,
   "start_elevation_m": 190.8688548566368,
   "end_elevation_m": 204.26226155842534,
   "min_gradient_pct": 5.238925045930059,
   "suppressed_max_gradient_pct": 14.639176126035549,
   "suppressed_location_m": [
    862.0,
    962.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.296,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 176.0,
  "shape_class": "sustained"
 },
 "length_m": 2000.0908257886538,
 "start_elevation_m": 34.56632806472861,
 "end_elevation_m": 240.2188016308601,
 "endpoint_gain_m": 205.6524735661315,
 "overall_gradient_pct": 10.28215673580928,
 "accumulated_ascent_m": 217.34977823533183,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.41100742656124,
   "start_distance_m": 809.0,
   "end_distance_m": 814.0,
   "midpoint_distance_m": 811.5,
   "start_elevation_m": 114.07933372066228,
   "end_elevation_m": 115.24988409199034,
   "start_xy": [
    267286.58842333994,
    148934.12895448992
   ],
   "end_xy": [
    267282.16599630396,
    148936.46179267653
   ]
  },
  "max_10m": {
   "gradient_pct": 20.061701858014942,
   "start_distance_m": 1647.0,
   "end_distance_m": 1657.0,
   "midpoint_distance_m": 1652.0,
   "start_elevation_m": 208.65675398059858,
   "end_elevation_m": 210.66292416640007,
   "start_xy": [
    267423.67849646177,
    148650.26622878673
   ],
   "end_xy": [
    267413.7627849779,
    148651.56185060836
   ]
  },
  "max_20m": {
   "gradient_pct": 15.28590842736989,
   "start_distance_m": 1647.0,
   "end_distance_m": 1667.0,
   "midpoint_distance_m": 1657.0,
   "start_elevation_m": 208.65675398059858,
   "end_elevation_m": 211.71393566607256,
   "start_xy": [
    267423.67849646177,
    148650.26622878673
   ],
   "end_xy": [
    267403.84704207804,
    148652.85723367502
   ]
  },
  "max_25m": {
   "gradient_pct": 14.980840739317614,
   "start_distance_m": 937.0,
   "end_distance_m": 962.0,
   "midpoint_distance_m": 949.5,
   "start_elevation_m": 130.0658862086211,
   "end_elevation_m": 133.8110963934505,
   "start_xy": [
    267224.00894940004,
    148946.42995464682
   ],
   "end_xy": [
    267240.43102073215,
    148927.5801390684
   ]
  },
  "max_50m": {
   "gradient_pct": 14.4964248791307,
   "start_distance_m": 1507.0,
   "end_distance_m": 1557.0,
   "midpoint_distance_m": 1532.0,
   "start_elevation_m": 193.30291169473728,
   "end_elevation_m": 200.55112413430263,
   "start_xy": [
    267562.7738496311,
    148640.96670423614
   ],
   "end_xy": [
    267512.85477296985,
    148639.62840449734
   ]
  },
  "max_100m": {
   "gradient_pct": 13.393406701788535,
   "start_distance_m": 1488.0,
   "end_distance_m": 1588.0,
   "midpoint_distance_m": 1538.0,
   "start_elevation_m": 190.8688548566368,
   "end_elevation_m": 204.26226155842534,
   "start_xy": [
    267581.68772704905,
    148642.77369253233
   ],
   "end_xy": [
    267481.9058199857,
    148641.19976412927
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -17.31797319204972,
   "start_distance_m": 180.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 182.5,
   "start_elevation_m": 48.77609508980756,
   "end_elevation_m": 47.910196430205076,
   "start_xy": [
    267723.2322670045,
    148885.86944121108
   ],
   "end_xy": [
    267725.387560924,
    148881.35782205962
   ]
  },
  "min_10m": {
   "gradient_pct": -12.551485498656447,
   "start_distance_m": 175.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 180.0,
   "start_elevation_m": 49.16534498007072,
   "end_elevation_m": 47.910196430205076,
   "start_xy": [
    267721.0773605641,
    148890.38124540882
   ],
   "end_xy": [
    267725.387560924,
    148881.35782205962
   ]
  },
  "min_20m": {
   "gradient_pct": -5.660624936207768,
   "start_distance_m": 173.0,
   "end_distance_m": 193.0,
   "midpoint_distance_m": 183.0,
   "start_elevation_m": 49.23854089043252,
   "end_elevation_m": 48.106415903190964,
   "start_xy": [
    267720.2102470948,
    148892.18348994196
   ],
   "end_xy": [
    267728.8342870951,
    148874.1383991651
   ]
  },
  "min_25m": {
   "gradient_pct": -3.4023230597458394,
   "start_distance_m": 170.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 182.5,
   "start_elevation_m": 49.07548168785719,
   "end_elevation_m": 48.22490092292073,
   "start_xy": [
    267718.75232881855,
    148894.8054086678
   ],
   "end_xy": [
    267729.6965604047,
    148872.3338258806
   ]
  },
  "min_50m": {
   "gradient_pct": 0.9856462676638955,
   "start_distance_m": 174.0,
   "end_distance_m": 224.0,
   "midpoint_distance_m": 199.0,
   "start_elevation_m": 49.33736729908942,
   "end_elevation_m": 49.83019043292137,
   "start_xy": [
    267720.64622365637,
    148891.2835319303
   ],
   "end_xy": [
    267751.5051927679,
    148856.0577437286
   ]
  },
  "min_100m": {
   "gradient_pct": 5.238925045930059,
   "start_distance_m": 172.0,
   "end_distance_m": 272.0,
   "midpoint_distance_m": 222.0,
   "start_elevation_m": 49.227080217976265,
   "end_elevation_m": 54.466005263906325,
   "start_xy": [
    267719.72548075474,
    148893.05813265897
   ],
   "end_xy": [
    267792.46602237516,
    148845.31157807374
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 42.84487292376156,
   "start_distance_m": 790.0,
   "end_distance_m": 792.0,
   "midpoint_distance_m": 791.0,
   "start_elevation_m": 111.80535032304854,
   "end_elevation_m": 112.66224778152377,
   "start_xy": [
    267303.3578516277,
    148925.19893350624
   ],
   "end_xy": [
    267301.62156808935,
    148926.19143650046
   ]
  },
  "max_3m": {
   "gradient_pct": 35.35248522763984,
   "start_distance_m": 790.0,
   "end_distance_m": 793.0,
   "midpoint_distance_m": 791.5,
   "start_elevation_m": 111.80535032304854,
   "end_elevation_m": 112.86592487987774,
   "start_xy": [
    267303.3578516277,
    148925.19893350624
   ],
   "end_xy": [
    267300.7390333165,
    148926.66168153228
   ]
  }
 },
 "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": 0.009,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "placement_suppression": {
   "masked_fraction": 0.034,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.122,
   "windows_resited": [
    5.0,
    20.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 4,
   "windows_masked": [
    {
     "window_m": 20.0,
     "start_m": 763.0,
     "end_m": 783.0,
     "raw_pct": 21.26,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 343.0,
     "end_m": 353.0,
     "raw_pct": 27.82,
     "reason": "hump+short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 347.0,
     "end_m": 352.0,
     "raw_pct": 35.58,
     "reason": "hump+short-step"
    },
    {
     "window_m": 25.0,
     "start_m": 1672.0,
     "end_m": 1697.0,
     "raw_pct": 17.84,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 1672.0,
     "end_m": 1692.0,
     "raw_pct": 18.46,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 274.0,
     "end_m": 284.0,
     "raw_pct": 24.1,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 363.0,
     "end_m": 368.0,
     "raw_pct": 35.05,
     "reason": "hump+short-step"
    },
    {
     "window_m": 25.0,
     "start_m": 482.0,
     "end_m": 507.0,
     "raw_pct": 15.36,
     "reason": "staircase"
    },
    {
     "window_m": 20.0,
     "start_m": 487.0,
     "end_m": 507.0,
     "raw_pct": 16.92,
     "reason": "staircase"
    },
    {
     "window_m": 10.0,
     "start_m": 1018.0,
     "end_m": 1028.0,
     "raw_pct": 23.37,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 249.0,
     "end_m": 269.0,
     "raw_pct": 16.44,
     "reason": "hump+mask-edge"
    },
    {
     "window_m": 5.0,
     "start_m": 294.0,
     "end_m": 299.0,
     "raw_pct": 24.92,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.127,
   "obstruction_max_height_m": 18.9,
   "flagged_windows_m": [
    5
   ]
  },
  "excluded_ranges_m": [
   [
    160.0,
    190.0
   ],
   [
    247.0,
    286.0
   ],
   [
    292.0,
    301.0
   ],
   [
    341.0,
    355.0
   ],
   [
    361.0,
    370.0
   ],
   [
    480.0,
    509.0
   ],
   [
    761.0,
    785.0
   ],
   [
    929.0,
    935.0
   ],
   [
    1016.0,
    1030.0
   ],
   [
    1180.0,
    1210.0
   ],
   [
    1670.0,
    1699.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_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/SS6545.tif"
  ],
  "calculated_at": "2026-09-12T01:39:39+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-260912",
  "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": [
   "SS6545.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Wringapeak",
  "county": "Devon"
 }
}