{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.7473, -3.2561)",
 "slug": "discovered-lane-50-7473-3-2561",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.465910418967894,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1803.0,
   "end_distance_m": 1805.0,
   "start_elevation_m": 190.83347345599412,
   "end_elevation_m": 191.54279166437348,
   "min_gradient_pct": -33.438979138674085,
   "suppressed_max_gradient_pct": 53.625535603426044,
   "suppressed_location_m": [
    1968.0,
    1970.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.590410697632024,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1803.0,
   "end_distance_m": 1806.0,
   "start_elevation_m": 190.83347345599412,
   "end_elevation_m": 191.87118577692308,
   "min_gradient_pct": -27.49355845072235,
   "suppressed_max_gradient_pct": 46.431832571644804,
   "suppressed_location_m": [
    1968.0,
    1971.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 29.773858852756803,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1802.0,
   "end_distance_m": 1807.0,
   "start_elevation_m": 190.63662037435608,
   "end_elevation_m": 192.12531331699392,
   "min_gradient_pct": -21.43179457982228,
   "suppressed_max_gradient_pct": 38.49208257090595,
   "suppressed_location_m": [
    1967.0,
    1972.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.966556124255533,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2106.0,
   "end_distance_m": 2116.0,
   "start_elevation_m": 234.27031580706975,
   "end_elevation_m": 236.5669714194953,
   "min_gradient_pct": -17.016325071641063,
   "suppressed_max_gradient_pct": 30.567973956821675,
   "suppressed_location_m": [
    1980.0,
    1990.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.575369760675443,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2055.0,
   "end_distance_m": 2075.0,
   "start_elevation_m": 226.44582063134584,
   "end_elevation_m": 230.36089458348093,
   "min_gradient_pct": -15.460583109282737,
   "suppressed_max_gradient_pct": 27.91539411425461,
   "suppressed_location_m": [
    1968.0,
    1988.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 18.776585528062583,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2098.0,
   "end_distance_m": 2123.0,
   "start_elevation_m": 233.01894497048553,
   "end_elevation_m": 237.71309135250118,
   "min_gradient_pct": -12.729410187886174,
   "suppressed_max_gradient_pct": 28.05436239007497,
   "suppressed_location_m": [
    1967.0,
    1992.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.37597982386893,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1908.0,
   "end_distance_m": 1958.0,
   "start_elevation_m": 203.2499363497525,
   "end_elevation_m": 211.93792626168695,
   "min_gradient_pct": -6.911309990686391,
   "suppressed_max_gradient_pct": 23.10608782734499,
   "suppressed_location_m": [
    1966.0,
    2016.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.80020654888915,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2040.0,
   "end_distance_m": 2140.0,
   "start_elevation_m": 224.1346588304238,
   "end_elevation_m": 239.93486537931295,
   "min_gradient_pct": -3.6422469294035125,
   "suppressed_max_gradient_pct": 19.79564259977849,
   "suppressed_location_m": [
    1913.0,
    2013.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.4,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 172.0,
  "shape_class": "sustained"
 },
 "length_m": 2189.7866740516065,
 "start_elevation_m": 126.52253898523051,
 "end_elevation_m": 241.6168873901366,
 "endpoint_gain_m": 115.0943484049061,
 "overall_gradient_pct": 5.255961677397334,
 "accumulated_ascent_m": 146.96384415735207,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 29.773858852756803,
   "start_distance_m": 1802.0,
   "end_distance_m": 1807.0,
   "midpoint_distance_m": 1804.5,
   "start_elevation_m": 190.63662037435608,
   "end_elevation_m": 192.12531331699392,
   "start_xy": [
    312763.03367412643,
    95627.00281708172
   ],
   "end_xy": [
    312767.25929820864,
    95629.6410639404
   ]
  },
  "max_10m": {
   "gradient_pct": 22.966556124255533,
   "start_distance_m": 2106.0,
   "end_distance_m": 2116.0,
   "midpoint_distance_m": 2111.0,
   "start_elevation_m": 234.27031580706975,
   "end_elevation_m": 236.5669714194953,
   "start_xy": [
    312951.56097612676,
    95861.2389744477
   ],
   "end_xy": [
    312956.79389132175,
    95869.7605103171
   ]
  },
  "max_20m": {
   "gradient_pct": 19.575369760675443,
   "start_distance_m": 2055.0,
   "end_distance_m": 2075.0,
   "midpoint_distance_m": 2065.0,
   "start_elevation_m": 226.44582063134584,
   "end_elevation_m": 230.36089458348093,
   "start_xy": [
    312925.1353462292,
    95817.62081913158
   ],
   "end_xy": [
    312935.3422625083,
    95834.82019441527
   ]
  },
  "max_25m": {
   "gradient_pct": 18.776585528062583,
   "start_distance_m": 2098.0,
   "end_distance_m": 2123.0,
   "midpoint_distance_m": 2110.5,
   "start_elevation_m": 233.01894497048553,
   "end_elevation_m": 237.71309135250118,
   "start_xy": [
    312947.37405730836,
    95854.4221068528
   ],
   "end_xy": [
    312962.3892380596,
    95873.69019300952
   ]
  },
  "max_50m": {
   "gradient_pct": 17.37597982386893,
   "start_distance_m": 1908.0,
   "end_distance_m": 1958.0,
   "midpoint_distance_m": 1933.0,
   "start_elevation_m": 203.2499363497525,
   "end_elevation_m": 211.93792626168695,
   "start_xy": [
    312831.9019411529,
    95706.59359240448
   ],
   "end_xy": [
    312869.53972384,
    95739.39596540059
   ]
  },
  "max_100m": {
   "gradient_pct": 15.80020654888915,
   "start_distance_m": 2040.0,
   "end_distance_m": 2140.0,
   "midpoint_distance_m": 2090.0,
   "start_elevation_m": 224.1346588304238,
   "end_elevation_m": 239.93486537931295,
   "start_xy": [
    312917.4823638514,
    95804.71997309026
   ],
   "end_xy": [
    312978.5083780627,
    95878.72674899819
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -21.43179457982228,
   "start_distance_m": 1746.0,
   "end_distance_m": 1751.0,
   "midpoint_distance_m": 1748.5,
   "start_elevation_m": 189.00860134630653,
   "end_elevation_m": 187.93701161731542,
   "start_xy": [
    312732.4165408443,
    95589.82732675446
   ],
   "end_xy": [
    312733.03494428453,
    95594.7889327937
   ]
  },
  "min_10m": {
   "gradient_pct": -17.016325071641063,
   "start_distance_m": 1746.0,
   "end_distance_m": 1756.0,
   "midpoint_distance_m": 1751.0,
   "start_elevation_m": 189.00860134630653,
   "end_elevation_m": 187.30696883914243,
   "start_xy": [
    312732.4165408443,
    95589.82732675446
   ],
   "end_xy": [
    312732.70748741954,
    95599.75239395806
   ]
  },
  "min_20m": {
   "gradient_pct": -15.460583109282737,
   "start_distance_m": 1744.0,
   "end_distance_m": 1764.0,
   "midpoint_distance_m": 1754.0,
   "start_elevation_m": 189.17155133083006,
   "end_elevation_m": 186.0794347089735,
   "start_xy": [
    312732.1695382718,
    95587.84263824335
   ],
   "end_xy": [
    312731.5714968097,
    95607.67132855768
   ]
  },
  "min_25m": {
   "gradient_pct": -12.729410187886174,
   "start_distance_m": 1739.0,
   "end_distance_m": 1764.0,
   "midpoint_distance_m": 1751.5,
   "start_elevation_m": 189.26178725594505,
   "end_elevation_m": 186.0794347089735,
   "start_xy": [
    312731.5504773824,
    95582.88111027102
   ],
   "end_xy": [
    312731.5714968097,
    95607.67132855768
   ]
  },
  "min_50m": {
   "gradient_pct": -6.911309990686391,
   "start_distance_m": 1714.0,
   "end_distance_m": 1764.0,
   "midpoint_distance_m": 1739.0,
   "start_elevation_m": 189.5350897043167,
   "end_elevation_m": 186.0794347089735,
   "start_xy": [
    312722.8286818359,
    95559.50779549044
   ],
   "end_xy": [
    312731.5714968097,
    95607.67132855768
   ]
  },
  "min_100m": {
   "gradient_pct": -3.6422469294035125,
   "start_distance_m": 1664.0,
   "end_distance_m": 1764.0,
   "midpoint_distance_m": 1714.0,
   "start_elevation_m": 189.72168163837702,
   "end_elevation_m": 186.0794347089735,
   "start_xy": [
    312700.70561046567,
    95514.66848418297
   ],
   "end_xy": [
    312731.5714968097,
    95607.67132855768
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.465910418967894,
   "start_distance_m": 1803.0,
   "end_distance_m": 1805.0,
   "midpoint_distance_m": 1804.0,
   "start_elevation_m": 190.83347345599412,
   "end_elevation_m": 191.54279166437348,
   "start_xy": [
    312763.9109511199,
    95627.48280135129
   ],
   "end_xy": [
    312765.66312358074,
    95628.44681678388
   ]
  },
  "max_3m": {
   "gradient_pct": 34.590410697632024,
   "start_distance_m": 1803.0,
   "end_distance_m": 1806.0,
   "midpoint_distance_m": 1804.5,
   "start_elevation_m": 190.83347345599412,
   "end_elevation_m": 191.87118577692308,
   "start_xy": [
    312763.9109511199,
    95627.48280135129
   ],
   "end_xy": [
    312766.5039013215,
    95628.9859323605
   ]
  }
 },
 "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": 0.014,
   "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": 1967.0,
     "end_m": 1992.0,
     "raw_pct": 28.05,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 1968.0,
     "end_m": 1988.0,
     "raw_pct": 27.92,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 1980.0,
     "end_m": 1990.0,
     "raw_pct": 30.57,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 1967.0,
     "end_m": 1972.0,
     "raw_pct": 38.49,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.096,
   "obstruction_max_height_m": 20.92,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    1965.0,
    1994.0
   ]
  ],
  "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/SY1090.tif",
   "data/cache/england/bulk_dtm_1m/SY1095.tif"
  ],
  "calculated_at": "2026-09-12T01:37:21+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-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": [
   "SY1090.tif",
   "SY1095.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Ottery St Mary",
  "county": "Devon"
 }
}