{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.5969, -3.5661)",
 "slug": "discovered-lane-50-5969-3-5661",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 41.48643951217821,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 294.0,
   "end_distance_m": 296.0,
   "start_elevation_m": 158.5595640809794,
   "end_elevation_m": 159.38929287122298,
   "min_gradient_pct": -44.792165558803276,
   "suppressed_max_gradient_pct": 47.531513391206204,
   "suppressed_location_m": [
    16.0,
    18.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 38.65064260230421,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 293.0,
   "end_distance_m": 296.0,
   "start_elevation_m": 158.22977359315385,
   "end_elevation_m": 159.38929287122298,
   "min_gradient_pct": -41.188741456773435,
   "suppressed_max_gradient_pct": 43.11237723823259,
   "suppressed_location_m": [
    15.0,
    18.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.862758145807675,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 292.0,
   "end_distance_m": 297.0,
   "start_elevation_m": 158.03489185900932,
   "end_elevation_m": 159.6280297662997,
   "min_gradient_pct": -31.28294738817459
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.410208942473957,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 287.0,
   "end_distance_m": 297.0,
   "start_elevation_m": 157.0870088720523,
   "end_elevation_m": 159.6280297662997,
   "min_gradient_pct": -16.523596182741755
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.86832942930613,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 276.0,
   "end_distance_m": 296.0,
   "start_elevation_m": 155.21562698536175,
   "end_elevation_m": 159.38929287122298,
   "min_gradient_pct": -0.6281369472772269
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.546776061295304,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 273.0,
   "end_distance_m": 298.0,
   "start_elevation_m": 154.65326005449353,
   "end_elevation_m": 159.78995406981736,
   "min_gradient_pct": -0.48639276299195444
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.232956894145957,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 119.0,
   "end_distance_m": 169.0,
   "start_elevation_m": 132.78925911641048,
   "end_elevation_m": 141.90573756348346,
   "min_gradient_pct": 4.501363738160137
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.935333009861964,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 71.0,
   "end_distance_m": 171.0,
   "start_elevation_m": 125.2660055723555,
   "end_elevation_m": 142.20133858221746,
   "min_gradient_pct": 9.191714816511222
  }
 ],
 "shape": {
  "ascent_concentration": 0.34,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 204.0,
  "shape_class": "sustained"
 },
 "length_m": 333.04931952691516,
 "start_elevation_m": 119.8013304560832,
 "end_elevation_m": 160.18743601928753,
 "endpoint_gain_m": 40.386105563204325,
 "overall_gradient_pct": 12.126163662658541,
 "accumulated_ascent_m": 42.65764691418066,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.862758145807675,
   "start_distance_m": 292.0,
   "end_distance_m": 297.0,
   "midpoint_distance_m": 294.5,
   "start_elevation_m": 158.03489185900932,
   "end_elevation_m": 159.6280297662997,
   "start_xy": [
    289271.1288589936,
    78667.71054831226
   ],
   "end_xy": [
    289268.05464737635,
    78663.76729801172
   ]
  },
  "max_10m": {
   "gradient_pct": 25.410208942473957,
   "start_distance_m": 287.0,
   "end_distance_m": 297.0,
   "midpoint_distance_m": 292.0,
   "start_elevation_m": 157.0870088720523,
   "end_elevation_m": 159.6280297662997,
   "start_xy": [
    289274.20307061076,
    78671.6537986128
   ],
   "end_xy": [
    289268.05464737635,
    78663.76729801172
   ]
  },
  "max_20m": {
   "gradient_pct": 20.86832942930613,
   "start_distance_m": 276.0,
   "end_distance_m": 296.0,
   "midpoint_distance_m": 286.0,
   "start_elevation_m": 155.21562698536175,
   "end_elevation_m": 159.38929287122298,
   "start_xy": [
    289280.96633616864,
    78680.32894927397
   ],
   "end_xy": [
    289268.6694896998,
    78664.55594807182
   ]
  },
  "max_25m": {
   "gradient_pct": 20.546776061295304,
   "start_distance_m": 273.0,
   "end_distance_m": 298.0,
   "midpoint_distance_m": 285.5,
   "start_elevation_m": 154.65326005449353,
   "end_elevation_m": 159.78995406981736,
   "start_xy": [
    289282.81086313893,
    78682.69489945429
   ],
   "end_xy": [
    289267.43980505294,
    78662.97864795162
   ]
  },
  "max_50m": {
   "gradient_pct": 18.232956894145957,
   "start_distance_m": 119.0,
   "end_distance_m": 169.0,
   "midpoint_distance_m": 144.0,
   "start_elevation_m": 132.78925911641048,
   "end_elevation_m": 141.90573756348346,
   "start_xy": [
    289271.3961044895,
    78820.48277324265
   ],
   "end_xy": [
    289293.57691763015,
    78775.77716806685
   ]
  },
  "max_100m": {
   "gradient_pct": 16.935333009861964,
   "start_distance_m": 71.0,
   "end_distance_m": 171.0,
   "midpoint_distance_m": 121.0,
   "start_elevation_m": 125.2660055723555,
   "end_elevation_m": 142.20133858221746,
   "start_xy": [
    289259.09189019573,
    78866.45117192183
   ],
   "end_xy": [
    289294.66536818445,
    78774.09928982607
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -31.28294738817459,
   "start_distance_m": 8.0,
   "end_distance_m": 13.0,
   "midpoint_distance_m": 10.5,
   "start_elevation_m": 119.86272157131805,
   "end_elevation_m": 118.29857420190932,
   "start_xy": [
    289258.3106420136,
    78928.85791727502
   ],
   "end_xy": [
    289257.6847932721,
    78923.89724057191
   ]
  },
  "min_10m": {
   "gradient_pct": -16.523596182741755,
   "start_distance_m": 4.0,
   "end_distance_m": 14.0,
   "midpoint_distance_m": 9.0,
   "start_elevation_m": 119.81192488382887,
   "end_elevation_m": 118.15956526555469,
   "start_xy": [
    289258.8113210068,
    78932.82645863752
   ],
   "end_xy": [
    289257.5596235238,
    78922.90510523129
   ]
  },
  "min_20m": {
   "gradient_pct": -0.6281369472772269,
   "start_distance_m": 306.0,
   "end_distance_m": 326.0,
   "midpoint_distance_m": 316.0,
   "start_elevation_m": 160.31500475104,
   "end_elevation_m": 160.18937736158455,
   "start_xy": [
    289262.5210664654,
    78656.66944747076
   ],
   "end_xy": [
    289250.2242199966,
    78640.89644626861
   ]
  },
  "min_25m": {
   "gradient_pct": -0.48639276299195444,
   "start_distance_m": 306.0,
   "end_distance_m": 331.0,
   "midpoint_distance_m": 318.5,
   "start_elevation_m": 160.31500475104,
   "end_elevation_m": 160.193406560292,
   "start_xy": [
    289262.5210664654,
    78656.66944747076
   ],
   "end_xy": [
    289247.1500083794,
    78636.95319596808
   ]
  },
  "min_50m": {
   "gradient_pct": 4.501363738160137,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 119.8013304560832,
   "end_elevation_m": 122.05201232516328,
   "start_xy": [
    289259.312,
    78936.795
   ],
   "end_xy": [
    289255.79192817287,
    78887.19027148395
   ]
  },
  "min_100m": {
   "gradient_pct": 9.191714816511222,
   "start_distance_m": 233.0,
   "end_distance_m": 333.0,
   "midpoint_distance_m": 283.0,
   "start_elevation_m": 150.99562680696508,
   "end_elevation_m": 160.1873416234763,
   "start_xy": [
    289305.65534727153,
    78715.36870252341
   ],
   "end_xy": [
    289245.92032373254,
    78635.37589584787
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 41.48643951217821,
   "start_distance_m": 294.0,
   "end_distance_m": 296.0,
   "midpoint_distance_m": 295.0,
   "start_elevation_m": 158.5595640809794,
   "end_elevation_m": 159.38929287122298,
   "start_xy": [
    289269.8991743467,
    78666.13324819204
   ],
   "end_xy": [
    289268.6694896998,
    78664.55594807182
   ]
  },
  "max_3m": {
   "gradient_pct": 38.65064260230421,
   "start_distance_m": 293.0,
   "end_distance_m": 296.0,
   "midpoint_distance_m": 294.5,
   "start_elevation_m": 158.22977359315385,
   "end_elevation_m": 159.38929287122298,
   "start_xy": [
    289270.5140166701,
    78666.92189825214
   ],
   "end_xy": [
    289268.6694896998,
    78664.55594807182
   ]
  }
 },
 "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": 0.099,
   "windows_resited": [
    2.0,
    3.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.042,
   "obstruction_max_height_m": 9.6,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    32.0
   ]
  ],
  "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/SX8575.tif"
  ],
  "calculated_at": "2026-09-05T00:17:33+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "/root/uk-climbs/data/cache/pbf/england-2026-08-27.osm.pbf",
  "osm_snapshot": "2026-08-26T20:22:15Z",
  "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": [
   "SX8575.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Court Bottom",
  "county": "Devon"
 }
}