{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.3544, -4.8027)",
 "slug": "discovered-lane-50-3544-4-8027",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 38.901938921544854,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 258.0,
   "end_distance_m": 260.0,
   "start_elevation_m": 146.90585234702374,
   "end_elevation_m": 147.68389112545464,
   "min_gradient_pct": -36.01000061689561,
   "suppressed_max_gradient_pct": 66.25567123942346,
   "suppressed_location_m": [
    129.0,
    131.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 36.71776952116943,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 257.0,
   "end_distance_m": 260.0,
   "start_elevation_m": 146.58235803981955,
   "end_elevation_m": 147.68389112545464,
   "min_gradient_pct": -36.21550359992085,
   "suppressed_max_gradient_pct": 52.63491253232312,
   "suppressed_location_m": [
    128.0,
    131.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.05703519634062,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 256.0,
   "end_distance_m": 261.0,
   "start_elevation_m": 146.33970626748675,
   "end_elevation_m": 147.89255802730378,
   "min_gradient_pct": -11.445290649392064,
   "suppressed_max_gradient_pct": 53.196690109519125,
   "suppressed_location_m": [
    126.0,
    131.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.36717675146076,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 156.0,
   "end_distance_m": 166.0,
   "start_elevation_m": 128.35009093032807,
   "end_elevation_m": 130.68680860547414,
   "min_gradient_pct": -4.810947854515462,
   "suppressed_max_gradient_pct": 42.20428757536013,
   "suppressed_location_m": [
    121.0,
    131.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.002072215791458,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 218.0,
   "end_distance_m": 238.0,
   "start_elevation_m": 141.49028683449092,
   "end_elevation_m": 145.4907012776492,
   "min_gradient_pct": -3.1390475307527765,
   "suppressed_max_gradient_pct": 36.22322187817133,
   "suppressed_location_m": [
    111.0,
    131.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 18.18399313033933,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 217.0,
   "end_distance_m": 242.0,
   "start_elevation_m": 141.35394654930582,
   "end_elevation_m": 145.89994483189065,
   "min_gradient_pct": -2.3210895192414682,
   "suppressed_max_gradient_pct": 33.68231927860148,
   "suppressed_location_m": [
    106.0,
    131.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 15.487360270137856,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "placement_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 253.0,
   "end_distance_m": 303.0,
   "start_elevation_m": 145.65633656362166,
   "end_elevation_m": 153.4000166986906,
   "min_gradient_pct": 1.8038186764387092,
   "suppressed_max_gradient_pct": 31.101126080243603,
   "suppressed_location_m": [
    82.0,
    132.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.663646081585197,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "placement_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 253.0,
   "end_distance_m": 353.0,
   "start_elevation_m": 145.65633656362166,
   "end_elevation_m": 160.31998264520686,
   "min_gradient_pct": 2.768428421165595,
   "suppressed_max_gradient_pct": 22.743753879312536,
   "suppressed_location_m": [
    109.0,
    209.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.466,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 76.0,
  "shape_class": "stepped"
 },
 "length_m": 637.6501265902771,
 "start_elevation_m": 103.68303018188462,
 "end_elevation_m": 178.45943767871097,
 "endpoint_gain_m": 74.77640749682635,
 "overall_gradient_pct": 11.726870956127643,
 "accumulated_ascent_m": 79.36878930936574,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.05703519634062,
   "start_distance_m": 256.0,
   "end_distance_m": 261.0,
   "midpoint_distance_m": 258.5,
   "start_elevation_m": 146.33970626748675,
   "end_elevation_m": 147.89255802730378,
   "start_xy": [
    200872.1605696743,
    54259.09301163042
   ],
   "end_xy": [
    200867.1623396302,
    54259.226017186804
   ]
  },
  "max_10m": {
   "gradient_pct": 23.36717675146076,
   "start_distance_m": 156.0,
   "end_distance_m": 166.0,
   "midpoint_distance_m": 161.0,
   "start_elevation_m": 128.35009093032807,
   "end_elevation_m": 130.68680860547414,
   "start_xy": [
    200938.97686723477,
    54186.39615998314
   ],
   "end_xy": [
    200932.58516067412,
    54194.08680663788
   ]
  },
  "max_20m": {
   "gradient_pct": 20.002072215791458,
   "start_distance_m": 218.0,
   "end_distance_m": 238.0,
   "midpoint_distance_m": 228.0,
   "start_elevation_m": 141.49028683449092,
   "end_elevation_m": 145.4907012776492,
   "start_xy": [
    200899.145971762,
    54233.90903354361
   ],
   "end_xy": [
    200886.2732693498,
    54249.21567962429
   ]
  },
  "max_25m": {
   "gradient_pct": 18.18399313033933,
   "start_distance_m": 217.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 229.5,
   "start_elevation_m": 141.35394654930582,
   "end_elevation_m": 145.89994483189065,
   "start_xy": [
    200899.78998432035,
    54233.14401862567
   ],
   "end_xy": [
    200883.6978050858,
    54252.276232199496
   ]
  },
  "max_50m": {
   "gradient_pct": 15.487360270137856,
   "start_distance_m": 253.0,
   "end_distance_m": 303.0,
   "midpoint_distance_m": 278.0,
   "start_elevation_m": 145.65633656362166,
   "end_elevation_m": 153.4000166986906,
   "start_xy": [
    200875.1595290191,
    54259.014012257765
   ],
   "end_xy": [
    200825.17709490325,
    54260.33902353251
   ]
  },
  "max_100m": {
   "gradient_pct": 14.663646081585197,
   "start_distance_m": 253.0,
   "end_distance_m": 353.0,
   "midpoint_distance_m": 303.0,
   "start_elevation_m": 145.65633656362166,
   "end_elevation_m": 160.31998264520686,
   "start_xy": [
    200875.1595290191,
    54259.014012257765
   ],
   "end_xy": [
    200775.83631110305,
    54254.83884455658
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.445290649392064,
   "start_distance_m": 242.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 244.5,
   "start_elevation_m": 145.89994483189065,
   "end_elevation_m": 145.32768029942105,
   "start_xy": [
    200883.6978050858,
    54252.276232199496
   ],
   "end_xy": [
    200880.242723363,
    54255.848183649774
   ]
  },
  "min_10m": {
   "gradient_pct": -4.810947854515462,
   "start_distance_m": 527.0,
   "end_distance_m": 537.0,
   "midpoint_distance_m": 532.0,
   "start_elevation_m": 175.63280566983568,
   "end_elevation_m": 175.15171088438413,
   "start_xy": [
    200699.3865908306,
    54367.770976785374
   ],
   "end_xy": [
    200706.8678871735,
    54373.92512243239
   ]
  },
  "min_20m": {
   "gradient_pct": -3.1390475307527765,
   "start_distance_m": 527.0,
   "end_distance_m": 547.0,
   "midpoint_distance_m": 537.0,
   "start_elevation_m": 175.63280566983568,
   "end_elevation_m": 175.00499616368512,
   "start_xy": [
    200699.3865908306,
    54367.770976785374
   ],
   "end_xy": [
    200716.40300705328,
    54376.33867254439
   ]
  },
  "min_25m": {
   "gradient_pct": -2.3210895192414682,
   "start_distance_m": 521.0,
   "end_distance_m": 546.0,
   "midpoint_distance_m": 533.5,
   "start_elevation_m": 175.58312266864255,
   "end_elevation_m": 175.00285028883218,
   "start_xy": [
    200698.08182086455,
    54361.94170088126
   ],
   "end_xy": [
    200715.6343837578,
    54375.69897087775
   ]
  },
  "min_50m": {
   "gradient_pct": 1.8038186764387092,
   "start_distance_m": 584.0,
   "end_distance_m": 634.0,
   "midpoint_distance_m": 609.0,
   "start_elevation_m": 177.5381455478634,
   "end_elevation_m": 178.44005488608275,
   "start_xy": [
    200705.64798348353,
    54397.200199804574
   ],
   "end_xy": [
    200657.15356624243,
    54385.63512825398
   ]
  },
  "min_100m": {
   "gradient_pct": 2.768428421165595,
   "start_distance_m": 527.0,
   "end_distance_m": 627.0,
   "midpoint_distance_m": 577.0,
   "start_elevation_m": 175.63280566983568,
   "end_elevation_m": 178.40123409100127,
   "start_xy": [
    200699.3865908306,
    54367.770976785374
   ],
   "end_xy": [
    200663.99165839632,
    54387.13195485856
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 38.901938921544854,
   "start_distance_m": 258.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 259.0,
   "start_elevation_m": 146.90585234702374,
   "end_elevation_m": 147.68389112545464,
   "start_xy": [
    200870.16127252343,
    54259.14601964187
   ],
   "end_xy": [
    200868.1619753464,
    54259.19902766565
   ]
  },
  "max_3m": {
   "gradient_pct": 36.71776952116943,
   "start_distance_m": 257.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 258.5,
   "start_elevation_m": 146.58235803981955,
   "end_elevation_m": 147.68389112545464,
   "start_xy": [
    200871.16093467546,
    54259.12002769844
   ],
   "end_xy": [
    200868.1619753464,
    54259.19902766565
   ]
  }
 },
 "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": 0.049,
   "windows_resited": [
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.152,
   "windows_resited": [
    5.0,
    10.0,
    20.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 184.0,
     "end_m": 209.0,
     "raw_pct": 32.99,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 187.0,
     "end_m": 207.0,
     "raw_pct": 34.51,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 86.0,
     "end_m": 96.0,
     "raw_pct": 39.87,
     "reason": "short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 87.0,
     "end_m": 92.0,
     "raw_pct": 44.24,
     "reason": "short-step"
    },
    {
     "window_m": 20.0,
     "start_m": 99.0,
     "end_m": 119.0,
     "raw_pct": 25.9,
     "reason": "mask-edge"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.391,
   "obstruction_max_height_m": 7.91,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    84.0,
    150.0
   ],
   [
    182.0,
    211.0
   ]
  ],
  "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/SX0050.tif"
  ],
  "calculated_at": "2026-09-12T01:38:11+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-england/batch-england-rchunk00.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": [
   "SX0050.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Trethowel",
  "county": "Cornwall"
 }
}