{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.4783, -4.7529)",
 "slug": "discovered-lane-50-4783-4-7529",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 37.11259376649707,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 858.0,
   "end_distance_m": 860.0,
   "start_elevation_m": 83.64217035025356,
   "end_elevation_m": 84.3844222255835,
   "min_gradient_pct": -46.05600924598363,
   "suppressed_max_gradient_pct": 60.956122930539536,
   "suppressed_location_m": [
    196.0,
    198.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.895046676548155,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 997.0,
   "end_distance_m": 1000.0,
   "start_elevation_m": 96.16178120848261,
   "end_elevation_m": 97.14863260877905,
   "min_gradient_pct": -32.287331711302635,
   "suppressed_max_gradient_pct": 54.351721935891106,
   "suppressed_location_m": [
    195.0,
    198.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.751641248925466,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 995.0,
   "end_distance_m": 1000.0,
   "start_elevation_m": 95.81105054633278,
   "end_elevation_m": 97.14863260877905,
   "min_gradient_pct": -16.775365820778347,
   "suppressed_max_gradient_pct": 42.21362908439261,
   "suppressed_location_m": [
    194.0,
    199.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.0949509168791,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 945.0,
   "end_distance_m": 955.0,
   "start_elevation_m": 91.20362907287915,
   "end_elevation_m": 93.21312416456706,
   "min_gradient_pct": -6.67525598236729,
   "suppressed_max_gradient_pct": 33.0503636432168,
   "suppressed_location_m": [
    237.0,
    247.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.497150042683103,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 168.0,
   "end_distance_m": 188.0,
   "start_elevation_m": 32.73043856991383,
   "end_elevation_m": 36.22986857845045,
   "min_gradient_pct": -3.2453338627820827,
   "suppressed_max_gradient_pct": 23.289854996733688,
   "suppressed_location_m": [
    227.0,
    247.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 16.785338036598603,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 163.0,
   "end_distance_m": 188.0,
   "start_elevation_m": 32.0335340693008,
   "end_elevation_m": 36.22986857845045,
   "min_gradient_pct": -1.9685110426731853,
   "suppressed_max_gradient_pct": 22.179731930906996,
   "suppressed_location_m": [
    222.0,
    247.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 15.776111796411058,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 138.0,
   "end_distance_m": 188.0,
   "start_elevation_m": 28.34181268024492,
   "end_elevation_m": 36.22986857845045,
   "min_gradient_pct": -0.1608920194157264,
   "suppressed_max_gradient_pct": 18.152453696152435,
   "suppressed_location_m": [
    195.0,
    245.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.83451955971308,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 88.0,
   "end_distance_m": 188.0,
   "start_elevation_m": 22.39534901873737,
   "end_elevation_m": 36.22986857845045,
   "min_gradient_pct": 1.5670314377011536,
   "suppressed_max_gradient_pct": 17.069462004414177,
   "suppressed_location_m": [
    147.0,
    247.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.397,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 130.0,
  "shape_class": "sustained"
 },
 "length_m": 1260.0537398700853,
 "start_elevation_m": 16.446868644781077,
 "end_elevation_m": 111.71427109017071,
 "endpoint_gain_m": 95.26740244538964,
 "overall_gradient_pct": 7.56058249191911,
 "accumulated_ascent_m": 104.70907322409639,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.751641248925466,
   "start_distance_m": 995.0,
   "end_distance_m": 1000.0,
   "midpoint_distance_m": 997.5,
   "start_elevation_m": 95.81105054633278,
   "end_elevation_m": 97.14863260877905,
   "start_xy": [
    204239.26555862324,
    68620.9368436479
   ],
   "end_xy": [
    204237.35854099964,
    68625.55888632283
   ]
  },
  "max_10m": {
   "gradient_pct": 20.0949509168791,
   "start_distance_m": 945.0,
   "end_distance_m": 955.0,
   "midpoint_distance_m": 950.0,
   "start_elevation_m": 91.20362907287915,
   "end_elevation_m": 93.21312416456706,
   "start_xy": [
    204252.42807118382,
    68572.85116754659
   ],
   "end_xy": [
    204250.35996555924,
    68582.63335948443
   ]
  },
  "max_20m": {
   "gradient_pct": 17.497150042683103,
   "start_distance_m": 168.0,
   "end_distance_m": 188.0,
   "midpoint_distance_m": 178.0,
   "start_elevation_m": 32.73043856991383,
   "end_elevation_m": 36.22986857845045,
   "start_xy": [
    204728.26814010367,
    68011.02099174577
   ],
   "end_xy": [
    204710.9492840767,
    68020.85645905235
   ]
  },
  "max_25m": {
   "gradient_pct": 16.785338036598603,
   "start_distance_m": 163.0,
   "end_distance_m": 188.0,
   "midpoint_distance_m": 175.5,
   "start_elevation_m": 32.0335340693008,
   "end_elevation_m": 36.22986857845045,
   "start_xy": [
    204731.68286021327,
    68007.53754214825
   ],
   "end_xy": [
    204710.9492840767,
    68020.85645905235
   ]
  },
  "max_50m": {
   "gradient_pct": 15.776111796411058,
   "start_distance_m": 138.0,
   "end_distance_m": 188.0,
   "midpoint_distance_m": 163.0,
   "start_elevation_m": 28.34181268024492,
   "end_elevation_m": 36.22986857845045,
   "start_xy": [
    204741.5667515345,
    67984.58917105537
   ],
   "end_xy": [
    204710.9492840767,
    68020.85645905235
   ]
  },
  "max_100m": {
   "gradient_pct": 13.83451955971308,
   "start_distance_m": 88.0,
   "end_distance_m": 188.0,
   "midpoint_distance_m": 138.0,
   "start_elevation_m": 22.39534901873737,
   "end_elevation_m": 36.22986857845045,
   "start_xy": [
    204759.70650394523,
    67937.9966829645
   ],
   "end_xy": [
    204710.9492840767,
    68020.85645905235
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -16.775365820778347,
   "start_distance_m": 898.0,
   "end_distance_m": 903.0,
   "midpoint_distance_m": 900.5,
   "start_elevation_m": 88.26717238565149,
   "end_elevation_m": 87.42840409461257,
   "start_xy": [
    204262.6160262014,
    68527.02494547961
   ],
   "end_xy": [
    204261.30712472912,
    68531.85058258164
   ]
  },
  "min_10m": {
   "gradient_pct": -6.67525598236729,
   "start_distance_m": 418.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 423.0,
   "start_elevation_m": 61.786264660743726,
   "end_elevation_m": 61.118739062507,
   "start_xy": [
    204558.00771726825,
    68184.12088269442
   ],
   "end_xy": [
    204551.57464831707,
    68191.77696483534
   ]
  },
  "min_20m": {
   "gradient_pct": -3.2453338627820827,
   "start_distance_m": 416.0,
   "end_distance_m": 436.0,
   "midpoint_distance_m": 426.0,
   "start_elevation_m": 61.90436469112038,
   "end_elevation_m": 61.25529791856396,
   "start_xy": [
    204559.29466390822,
    68182.58994626175
   ],
   "end_xy": [
    204545.85974820546,
    68197.30727032322
   ]
  },
  "min_25m": {
   "gradient_pct": -1.9685110426731853,
   "start_distance_m": 416.0,
   "end_distance_m": 441.0,
   "midpoint_distance_m": 428.5,
   "start_elevation_m": 61.90436469112038,
   "end_elevation_m": 61.41223693045208,
   "start_xy": [
    204559.29466390822,
    68182.58994626175
   ],
   "end_xy": [
    204541.84611141137,
    68200.28900074572
   ]
  },
  "min_50m": {
   "gradient_pct": -0.1608920194157264,
   "start_distance_m": 401.0,
   "end_distance_m": 451.0,
   "midpoint_distance_m": 426.0,
   "start_elevation_m": 61.78522118572103,
   "end_elevation_m": 61.704775176013165,
   "start_xy": [
    204568.94397411135,
    68171.1055767196
   ],
   "end_xy": [
    204533.8187151073,
    68206.25229488923
   ]
  },
  "min_100m": {
   "gradient_pct": 1.5670314377011536,
   "start_distance_m": 401.0,
   "end_distance_m": 501.0,
   "midpoint_distance_m": 451.0,
   "start_elevation_m": 61.78522118572103,
   "end_elevation_m": 63.35225262342218,
   "start_xy": [
    204568.94397411135,
    68171.1055767196
   ],
   "end_xy": [
    204493.08955319782,
    68235.24648020242
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 37.11259376649707,
   "start_distance_m": 858.0,
   "end_distance_m": 860.0,
   "midpoint_distance_m": 859.0,
   "start_elevation_m": 83.64217035025356,
   "end_elevation_m": 84.3844222255835,
   "start_xy": [
    204272.79378287462,
    68488.62647818534
   ],
   "end_xy": [
    204272.6738190114,
    68490.62287711039
   ]
  },
  "max_3m": {
   "gradient_pct": 32.895046676548155,
   "start_distance_m": 997.0,
   "end_distance_m": 1000.0,
   "midpoint_distance_m": 998.5,
   "start_elevation_m": 96.16178120848261,
   "end_elevation_m": 97.14863260877905,
   "start_xy": [
    204238.5025658465,
    68622.78558418287
   ],
   "end_xy": [
    204237.35854099964,
    68625.55888632283
   ]
  }
 },
 "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": 0.005,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.025,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 10.0,
     "start_m": 237.0,
     "end_m": 247.0,
     "raw_pct": 33.05,
     "reason": "short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 242.0,
     "end_m": 247.0,
     "raw_pct": 39.78,
     "reason": "short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 892.0,
     "end_m": 897.0,
     "raw_pct": 32.11,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.35,
   "obstruction_max_height_m": 14.58,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    194.0,
    199.0
   ],
   [
    235.0,
    249.0
   ],
   [
    890.0,
    899.0
   ]
  ],
  "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/SX0065.tif"
  ],
  "calculated_at": "2026-09-12T01:38:37+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": [
   "SX0065.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Dunmere",
  "county": "Cornwall"
 }
}