{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.3587, -3.6444)",
 "slug": "discovered-lane-50-3587-3-6444",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 52.53021064438599,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 759.0,
   "end_distance_m": 761.0,
   "start_elevation_m": 180.26187028134115,
   "end_elevation_m": 181.31247449422887,
   "min_gradient_pct": -31.374259013016115
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 47.80618725093765,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 767.0,
   "end_distance_m": 770.0,
   "start_elevation_m": 181.62719667066708,
   "end_elevation_m": 183.0613822881952,
   "min_gradient_pct": -21.977986816633194
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 38.08694628033777,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 758.0,
   "end_distance_m": 763.0,
   "start_elevation_m": 180.04657552756268,
   "end_elevation_m": 181.95092284157957,
   "min_gradient_pct": -17.414474392970476
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 29.58685520631647,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 232.0,
   "end_distance_m": 242.0,
   "start_elevation_m": 115.14514094832707,
   "end_elevation_m": 118.10382646895872,
   "min_gradient_pct": -6.739176197128529
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.852164767661733,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 230.0,
   "end_distance_m": 250.0,
   "start_elevation_m": 114.87733804826266,
   "end_elevation_m": 119.447771001795,
   "min_gradient_pct": -6.26706201810677
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.56371617496268,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 423.0,
   "end_distance_m": 448.0,
   "start_elevation_m": 136.91564982536272,
   "end_elevation_m": 142.3065788691034,
   "min_gradient_pct": -6.038050201952387
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.398229835601796,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 399.0,
   "end_distance_m": 449.0,
   "start_elevation_m": 132.29621224508654,
   "end_elevation_m": 142.49532716288743,
   "min_gradient_pct": -5.877902903390975
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.627779873867098,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 372.0,
   "end_distance_m": 472.0,
   "start_elevation_m": 127.67231870197622,
   "end_elevation_m": 145.30009857584332,
   "min_gradient_pct": -2.5399535318134667
  }
 ],
 "shape": {
  "ascent_concentration": 0.323,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 137.0,
  "shape_class": "sustained"
 },
 "length_m": 994.6625152517169,
 "start_elevation_m": 85.4654611654641,
 "end_elevation_m": 186.54687251376365,
 "endpoint_gain_m": 101.08141134829954,
 "overall_gradient_pct": 10.162382697483991,
 "accumulated_ascent_m": 109.23292590818428,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 38.08694628033777,
   "start_distance_m": 758.0,
   "end_distance_m": 763.0,
   "midpoint_distance_m": 760.5,
   "start_elevation_m": 180.04657552756268,
   "end_elevation_m": 181.95092284157957,
   "start_xy": [
    283059.04387881793,
    52495.73284969348
   ],
   "end_xy": [
    283059.5031947527,
    52490.75399150389
   ]
  },
  "max_10m": {
   "gradient_pct": 29.58685520631647,
   "start_distance_m": 232.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 237.0,
   "start_elevation_m": 115.14514094832707,
   "end_elevation_m": 118.10382646895872,
   "start_xy": [
    282929.467461292,
    52990.64584189285
   ],
   "end_xy": [
    282933.38009096147,
    52981.443052692324
   ]
  },
  "max_20m": {
   "gradient_pct": 22.852164767661733,
   "start_distance_m": 230.0,
   "end_distance_m": 250.0,
   "midpoint_distance_m": 240.0,
   "start_elevation_m": 114.87733804826266,
   "end_elevation_m": 119.447771001795,
   "start_xy": [
    282928.68493535806,
    52992.48639973295
   ],
   "end_xy": [
    282936.51019469707,
    52974.080821331896
   ]
  },
  "max_25m": {
   "gradient_pct": 21.56371617496268,
   "start_distance_m": 423.0,
   "end_distance_m": 448.0,
   "midpoint_distance_m": 435.5,
   "start_elevation_m": 136.91564982536272,
   "end_elevation_m": 142.3065788691034,
   "start_xy": [
    282952.2305261876,
    52812.79054175418
   ],
   "end_xy": [
    282960.4613023194,
    52789.18513065848
   ]
  },
  "max_50m": {
   "gradient_pct": 20.398229835601796,
   "start_distance_m": 399.0,
   "end_distance_m": 449.0,
   "midpoint_distance_m": 424.0,
   "start_elevation_m": 132.29621224508654,
   "end_elevation_m": 142.49532716288743,
   "start_xy": [
    282944.5213295011,
    52835.51868040322
   ],
   "end_xy": [
    282960.79745867767,
    52788.24332446672
   ]
  },
  "max_100m": {
   "gradient_pct": 17.627779873867098,
   "start_distance_m": 372.0,
   "end_distance_m": 472.0,
   "midpoint_distance_m": 422.0,
   "start_elevation_m": 127.67231870197622,
   "end_elevation_m": 145.30009857584332,
   "start_xy": [
    282935.84848322894,
    52861.08783638339
   ],
   "end_xy": [
    282968.52905491635,
    52766.581782056215
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -17.414474392970476,
   "start_distance_m": 359.0,
   "end_distance_m": 364.0,
   "midpoint_distance_m": 361.5,
   "start_elevation_m": 127.47427693257947,
   "end_elevation_m": 126.60355321293095,
   "start_xy": [
    282938.870045529,
    52872.694182184816
   ],
   "end_xy": [
    282936.37601367146,
    52868.360614936726
   ]
  },
  "min_10m": {
   "gradient_pct": -6.739176197128529,
   "start_distance_m": 949.0,
   "end_distance_m": 959.0,
   "midpoint_distance_m": 954.0,
   "start_elevation_m": 189.3514996778405,
   "end_elevation_m": 188.67758205812765,
   "start_xy": [
    283108.42739962606,
    52312.460699635194
   ],
   "end_xy": [
    283112.123122536,
    52303.16867982392
   ]
  },
  "min_20m": {
   "gradient_pct": -6.26706201810677,
   "start_distance_m": 974.0,
   "end_distance_m": 994.0,
   "midpoint_distance_m": 984.0,
   "start_elevation_m": 187.8612261070761,
   "end_elevation_m": 186.60781370345475,
   "start_xy": [
    283117.6667069008,
    52289.23065010699
   ],
   "end_xy": [
    283125.0581527206,
    52270.64661048442
   ]
  },
  "min_25m": {
   "gradient_pct": -6.038050201952387,
   "start_distance_m": 954.0,
   "end_distance_m": 979.0,
   "midpoint_distance_m": 966.5,
   "start_elevation_m": 189.02265858078374,
   "end_elevation_m": 187.51314603029564,
   "start_xy": [
    283110.27526108106,
    52307.81468972955
   ],
   "end_xy": [
    283119.51456835575,
    52284.58464020135
   ]
  },
  "min_50m": {
   "gradient_pct": -5.877902903390975,
   "start_distance_m": 944.0,
   "end_distance_m": 994.0,
   "midpoint_distance_m": 969.0,
   "start_elevation_m": 189.54676515515024,
   "end_elevation_m": 186.60781370345475,
   "start_xy": [
    283106.62822540256,
    52317.12554288489
   ],
   "end_xy": [
    283125.0581527206,
    52270.64661048442
   ]
  },
  "min_100m": {
   "gradient_pct": -2.5399535318134667,
   "start_distance_m": 894.0,
   "end_distance_m": 994.0,
   "midpoint_distance_m": 944.0,
   "start_elevation_m": 189.14776723526822,
   "end_elevation_m": 186.60781370345475,
   "start_xy": [
    283089.03124361695,
    52363.926677828786
   ],
   "end_xy": [
    283125.0581527206,
    52270.64661048442
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 52.53021064438599,
   "start_distance_m": 759.0,
   "end_distance_m": 761.0,
   "midpoint_distance_m": 760.0,
   "start_elevation_m": 180.26187028134115,
   "end_elevation_m": 181.31247449422887,
   "start_xy": [
    283059.1357420049,
    52494.737078055565
   ],
   "end_xy": [
    283059.3194683788,
    52492.74553477972
   ]
  },
  "max_3m": {
   "gradient_pct": 47.80618725093765,
   "start_distance_m": 767.0,
   "end_distance_m": 770.0,
   "midpoint_distance_m": 768.5,
   "start_elevation_m": 181.62719667066708,
   "end_elevation_m": 183.0613822881952,
   "start_xy": [
    283059.87064750044,
    52486.77090495221
   ],
   "end_xy": [
    283060.14623706124,
    52483.78359003845
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.015,
   "obstruction_max_height_m": 5.28,
   "flagged_windows_m": []
  },
  "review": [
   "short_window_divergence"
  ],
  "extent": [
   "may_start_earlier",
   "descends_at_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/SX8050.tif"
  ],
  "calculated_at": "2026-09-05T02:10:25+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "/mnt/HC_Volume_106792346/hunt-gb/regions/region-00.osm.pbf",
  "osm_snapshot": "",
  "run_id": "hunt-england-260905",
  "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": [
   "SX8050.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Capton",
  "county": "Devon"
 }
}