{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.3555, -3.7203)",
 "slug": "discovered-lane-50-3555-3-7203",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.13453174750407,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 44.0,
   "end_distance_m": 46.0,
   "start_elevation_m": 154.67923932864312,
   "end_elevation_m": 155.3419299635932,
   "min_gradient_pct": -54.84550353704947,
   "suppressed_max_gradient_pct": 72.37144682891454,
   "suppressed_location_m": [
    25.0,
    27.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.179794009047704,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 43.0,
   "end_distance_m": 46.0,
   "start_elevation_m": 154.34653614332177,
   "end_elevation_m": 155.3419299635932,
   "min_gradient_pct": -50.46784903661887,
   "suppressed_max_gradient_pct": 53.81759588738646,
   "suppressed_location_m": [
    25.0,
    28.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.774685563199796,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 43.0,
   "end_distance_m": 48.0,
   "start_elevation_m": 154.34653614332177,
   "end_elevation_m": 155.43527042148176,
   "min_gradient_pct": -45.95007409368634,
   "suppressed_max_gradient_pct": 39.709034310232596,
   "suppressed_location_m": [
    66.0,
    71.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.03998646084898,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 43.0,
   "end_distance_m": 53.0,
   "start_elevation_m": 154.34653614332177,
   "end_elevation_m": 156.05053478940667,
   "min_gradient_pct": -25.290148223894278,
   "suppressed_max_gradient_pct": 28.69159420102619,
   "suppressed_location_m": [
    714.0,
    724.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 13.31731183457606,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 34.0,
   "end_distance_m": 54.0,
   "start_elevation_m": 153.54066434629232,
   "end_elevation_m": 156.20412671320753,
   "min_gradient_pct": -16.17048833146214,
   "suppressed_max_gradient_pct": 23.47023378087158,
   "suppressed_location_m": [
    704.0,
    724.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 10.629399873652005,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 33.0,
   "end_distance_m": 58.0,
   "start_elevation_m": 153.53585917659234,
   "end_elevation_m": 156.19320914500534,
   "min_gradient_pct": -14.551155567678506,
   "suppressed_max_gradient_pct": 21.623803741032475,
   "suppressed_location_m": [
    700.0,
    725.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 9.168962781212372,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 76.0,
   "end_distance_m": 126.0,
   "start_elevation_m": 157.02934536911226,
   "end_elevation_m": 161.61382675971845,
   "min_gradient_pct": -9.726382286482249,
   "suppressed_max_gradient_pct": 15.758624434696912,
   "suppressed_location_m": [
    683.0,
    733.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 8.60897892813037,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 76.0,
   "end_distance_m": 176.0,
   "start_elevation_m": 157.02934536911226,
   "end_elevation_m": 165.63832429724263,
   "min_gradient_pct": -6.432038433913789,
   "suppressed_max_gradient_pct": 12.47482219641688,
   "suppressed_location_m": [
    659.0,
    759.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.38,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 42.0,
  "shape_class": "sustained"
 },
 "length_m": 981.9214666165603,
 "start_elevation_m": 149.92634376269507,
 "end_elevation_m": 205.0748559283448,
 "endpoint_gain_m": 55.14851216564972,
 "overall_gradient_pct": 5.616387261160181,
 "accumulated_ascent_m": 68.05204556585176,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.774685563199796,
   "start_distance_m": 43.0,
   "end_distance_m": 48.0,
   "midpoint_distance_m": 45.5,
   "start_elevation_m": 154.34653614332177,
   "end_elevation_m": 155.43527042148176,
   "start_xy": [
    278353.20298396016,
    52222.37892983572
   ],
   "end_xy": [
    278350.3700005735,
    52226.49890569207
   ]
  },
  "max_10m": {
   "gradient_pct": 17.03998646084898,
   "start_distance_m": 43.0,
   "end_distance_m": 53.0,
   "midpoint_distance_m": 48.0,
   "start_elevation_m": 154.34653614332177,
   "end_elevation_m": 156.05053478940667,
   "start_xy": [
    278353.20298396016,
    52222.37892983572
   ],
   "end_xy": [
    278347.5358761819,
    52230.61809567127
   ]
  },
  "max_20m": {
   "gradient_pct": 13.31731183457606,
   "start_distance_m": 34.0,
   "end_distance_m": 54.0,
   "midpoint_distance_m": 44.0,
   "start_elevation_m": 153.54066434629232,
   "end_elevation_m": 156.20412671320753,
   "start_xy": [
    278359.27069039945,
    52215.79415184093
   ],
   "end_xy": [
    278346.97016777715,
    52231.44270097738
   ]
  },
  "max_25m": {
   "gradient_pct": 10.629399873652005,
   "start_distance_m": 33.0,
   "end_distance_m": 58.0,
   "midpoint_distance_m": 45.5,
   "start_elevation_m": 153.53585917659234,
   "end_elevation_m": 156.19320914500534,
   "start_xy": [
    278360.00284076267,
    52215.11300879868
   ],
   "end_xy": [
    278345.3596275243,
    52235.0807573023
   ]
  },
  "max_50m": {
   "gradient_pct": 9.168962781212372,
   "start_distance_m": 76.0,
   "end_distance_m": 126.0,
   "midpoint_distance_m": 101.0,
   "start_elevation_m": 157.02934536911226,
   "end_elevation_m": 161.61382675971845,
   "start_xy": [
    278339.1864955166,
    52251.98910671488
   ],
   "end_xy": [
    278291.6809570904,
    52264.822893963305
   ]
  },
  "max_100m": {
   "gradient_pct": 8.60897892813037,
   "start_distance_m": 76.0,
   "end_distance_m": 176.0,
   "midpoint_distance_m": 126.0,
   "start_elevation_m": 157.02934536911226,
   "end_elevation_m": 165.63832429724263,
   "start_xy": [
    278339.1864955166,
    52251.98910671488
   ],
   "end_xy": [
    278242.12398979854,
    52266.52259406359
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -45.95007409368634,
   "start_distance_m": 507.0,
   "end_distance_m": 512.0,
   "midpoint_distance_m": 509.5,
   "start_elevation_m": 172.59318374049732,
   "end_elevation_m": 170.295680035813,
   "start_xy": [
    277912.522240831,
    52261.10784566356
   ],
   "end_xy": [
    277907.5482142565,
    52261.616820462405
   ]
  },
  "min_10m": {
   "gradient_pct": -25.290148223894278,
   "start_distance_m": 505.0,
   "end_distance_m": 515.0,
   "midpoint_distance_m": 510.0,
   "start_elevation_m": 172.82952632235717,
   "end_elevation_m": 170.30051149996774,
   "start_xy": [
    277914.5119150676,
    52260.90487905839
   ],
   "end_xy": [
    277904.5637525521,
    52261.921753771305
   ]
  },
  "min_20m": {
   "gradient_pct": -16.17048833146214,
   "start_distance_m": 492.0,
   "end_distance_m": 512.0,
   "midpoint_distance_m": 502.0,
   "start_elevation_m": 173.52977770210543,
   "end_elevation_m": 170.295680035813,
   "start_xy": [
    277927.44462258596,
    52259.58388052142
   ],
   "end_xy": [
    277907.5482142565,
    52261.616820462405
   ]
  },
  "min_25m": {
   "gradient_pct": -14.551155567678506,
   "start_distance_m": 487.0,
   "end_distance_m": 512.0,
   "midpoint_distance_m": 499.5,
   "start_elevation_m": 173.93346892773263,
   "end_elevation_m": 170.295680035813,
   "start_xy": [
    277932.4186492205,
    52259.07490631106
   ],
   "end_xy": [
    277907.5482142565,
    52261.616820462405
   ]
  },
  "min_50m": {
   "gradient_pct": -9.726382286482249,
   "start_distance_m": 462.0,
   "end_distance_m": 512.0,
   "midpoint_distance_m": 487.0,
   "start_elevation_m": 175.15887117905413,
   "end_elevation_m": 170.295680035813,
   "start_xy": [
    277957.28917211597,
    52256.53385270771
   ],
   "end_xy": [
    277907.5482142565,
    52261.616820462405
   ]
  },
  "min_100m": {
   "gradient_pct": -6.432038433913789,
   "start_distance_m": 413.0,
   "end_distance_m": 513.0,
   "midpoint_distance_m": 463.0,
   "start_elevation_m": 176.70550081541015,
   "end_elevation_m": 170.27346238149636,
   "start_xy": [
    278006.0353402135,
    52251.5528354756
   ],
   "end_xy": [
    277906.55332948023,
    52261.717836575895
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.13453174750407,
   "start_distance_m": 44.0,
   "end_distance_m": 46.0,
   "midpoint_distance_m": 45.0,
   "start_elevation_m": 154.67923932864312,
   "end_elevation_m": 155.3419299635932,
   "start_xy": [
    278352.6361157417,
    52223.20273832249
   ],
   "end_xy": [
    278351.5030581576,
    52224.85082200729
   ]
  },
  "max_3m": {
   "gradient_pct": 33.179794009047704,
   "start_distance_m": 43.0,
   "end_distance_m": 46.0,
   "midpoint_distance_m": 44.5,
   "start_elevation_m": 154.34653614332177,
   "end_elevation_m": 155.3419299635932,
   "start_xy": [
    278353.20298396016,
    52222.37892983572
   ],
   "end_xy": [
    278351.5030581576,
    52224.85082200729
   ]
  }
 },
 "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": 0.019,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.058,
   "windows_resited": [
    5.0,
    10.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 695.0,
     "end_m": 720.0,
     "raw_pct": 17.56,
     "reason": "hump+mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 700.0,
     "end_m": 720.0,
     "raw_pct": 19.58,
     "reason": "hump+mask-edge"
    },
    {
     "window_m": 10.0,
     "start_m": 700.0,
     "end_m": 710.0,
     "raw_pct": 23.16,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 569.0,
     "end_m": 574.0,
     "raw_pct": 21.86,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.093,
   "obstruction_max_height_m": 8.71,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    23.0,
    29.0
   ],
   [
    68.0,
    73.0
   ],
   [
    567.0,
    576.0
   ],
   [
    693.0,
    726.0
   ]
  ],
  "review": [],
  "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/SX7550.tif"
  ],
  "calculated_at": "2026-09-12T01:37:31+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": [
   "SX7550.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Halwell",
  "county": "Devon"
 }
}