{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (53.7097, -2.2513)",
 "slug": "discovered-lane-53-7097-2-2513",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 40.13779954525489,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 333.0,
   "end_distance_m": 335.0,
   "start_elevation_m": 271.135032525273,
   "end_elevation_m": 271.9377885161781,
   "min_gradient_pct": -65.51696873255253,
   "suppressed_max_gradient_pct": 79.30890846043752,
   "suppressed_location_m": [
    65.0,
    67.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 39.58582968456691,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 333.0,
   "end_distance_m": 336.0,
   "start_elevation_m": 271.135032525273,
   "end_elevation_m": 272.32260741581,
   "min_gradient_pct": -51.2983070360311,
   "suppressed_max_gradient_pct": 66.82089976405432,
   "suppressed_location_m": [
    64.0,
    67.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 35.07983271505964,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 333.0,
   "end_distance_m": 338.0,
   "start_elevation_m": 271.135032525273,
   "end_elevation_m": 272.889024161026,
   "min_gradient_pct": -34.56948846001467,
   "suppressed_max_gradient_pct": 49.576627895928596,
   "suppressed_location_m": [
    63.0,
    68.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 29.847312927430494,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 328.0,
   "end_distance_m": 338.0,
   "start_elevation_m": 269.90429286828294,
   "end_elevation_m": 272.889024161026,
   "min_gradient_pct": -14.130773006303912,
   "suppressed_max_gradient_pct": 30.078248190661725,
   "suppressed_location_m": [
    63.0,
    73.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.259810179962358,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 324.0,
   "end_distance_m": 344.0,
   "start_elevation_m": 269.1850633678379,
   "end_elevation_m": 274.0370254038304,
   "min_gradient_pct": -6.074958056340591
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.196932297259536,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 318.0,
   "end_distance_m": 343.0,
   "start_elevation_m": 268.0693917027592,
   "end_elevation_m": 273.8686247770741,
   "min_gradient_pct": -4.77798770735626
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.31116707372894,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 293.0,
   "end_distance_m": 343.0,
   "start_elevation_m": 263.21304124020963,
   "end_elevation_m": 273.8686247770741,
   "min_gradient_pct": -1.9852271466535285
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.12001101393446,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 146.0,
   "end_distance_m": 246.0,
   "start_elevation_m": 235.0944765329218,
   "end_elevation_m": 255.21448754685625,
   "min_gradient_pct": 6.088030130174673
  }
 ],
 "shape": {
  "ascent_concentration": 0.342,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 289.0,
  "shape_class": "sustained"
 },
 "length_m": 410.5800936786504,
 "start_elevation_m": 222.80310085424833,
 "end_elevation_m": 281.1416867480473,
 "endpoint_gain_m": 58.33858589379895,
 "overall_gradient_pct": 14.20881986048231,
 "accumulated_ascent_m": 60.46010303990309,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 35.07983271505964,
   "start_distance_m": 333.0,
   "end_distance_m": 338.0,
   "midpoint_distance_m": 335.5,
   "start_elevation_m": 271.135032525273,
   "end_elevation_m": 272.889024161026,
   "start_xy": [
    383447.9148736818,
    423511.1528231158
   ],
   "end_xy": [
    383443.76237983495,
    423513.9379254213
   ]
  },
  "max_10m": {
   "gradient_pct": 29.847312927430494,
   "start_distance_m": 328.0,
   "end_distance_m": 338.0,
   "midpoint_distance_m": 333.0,
   "start_elevation_m": 269.90429286828294,
   "end_elevation_m": 272.889024161026,
   "start_xy": [
    383452.0673675286,
    423508.36772081035
   ],
   "end_xy": [
    383443.76237983495,
    423513.9379254213
   ]
  },
  "max_20m": {
   "gradient_pct": 24.259810179962358,
   "start_distance_m": 324.0,
   "end_distance_m": 344.0,
   "midpoint_distance_m": 334.0,
   "start_elevation_m": 269.1850633678379,
   "end_elevation_m": 274.0370254038304,
   "start_xy": [
    383455.88635572686,
    423507.2463093137
   ],
   "end_xy": [
    383438.77938721876,
    423517.2800481878
   ]
  },
  "max_25m": {
   "gradient_pct": 23.196932297259536,
   "start_distance_m": 318.0,
   "end_distance_m": 343.0,
   "midpoint_distance_m": 330.5,
   "start_elevation_m": 268.0693917027592,
   "end_elevation_m": 273.8686247770741,
   "start_xy": [
    383461.69475292787,
    423505.7421411198
   ],
   "end_xy": [
    383439.6098859881,
    423516.72302772675
   ]
  },
  "max_50m": {
   "gradient_pct": 21.31116707372894,
   "start_distance_m": 293.0,
   "end_distance_m": 343.0,
   "midpoint_distance_m": 318.0,
   "start_elevation_m": 263.21304124020963,
   "end_elevation_m": 273.8686247770741,
   "start_xy": [
    383484.578801722,
    423503.928020836
   ],
   "end_xy": [
    383439.6098859881,
    423516.72302772675
   ]
  },
  "max_100m": {
   "gradient_pct": 20.12001101393446,
   "start_distance_m": 146.0,
   "end_distance_m": 246.0,
   "midpoint_distance_m": 196.0,
   "start_elevation_m": 235.0944765329218,
   "end_elevation_m": 255.21448754685625,
   "start_xy": [
    383510.53605961625,
    423644.36562241585
   ],
   "end_xy": [
    383502.48670569673,
    423545.62188112334
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -34.56948846001467,
   "start_distance_m": 56.0,
   "end_distance_m": 61.0,
   "midpoint_distance_m": 58.5,
   "start_elevation_m": 223.52752933354597,
   "end_elevation_m": 221.79905491054524,
   "start_xy": [
    383512.78405035415,
    423730.5641429885
   ],
   "end_xy": [
    383509.2780990443,
    423727.0912071051
   ]
  },
  "min_10m": {
   "gradient_pct": -14.130773006303912,
   "start_distance_m": 52.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 57.0,
   "start_elevation_m": 223.18739627067248,
   "end_elevation_m": 221.7743189700421,
   "start_xy": [
    383516.7829286857,
    423730.4694218746
   ],
   "end_xy": [
    383508.5896787699,
    423726.36589508544
   ]
  },
  "min_20m": {
   "gradient_pct": -6.074958056340591,
   "start_distance_m": 42.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 52.0,
   "start_elevation_m": 222.9893105813102,
   "end_elevation_m": 221.7743189700421,
   "start_xy": [
    383526.7143569657,
    423729.4549052558
   ],
   "end_xy": [
    383508.5896787699,
    423726.36589508544
   ]
  },
  "min_25m": {
   "gradient_pct": -4.77798770735626,
   "start_distance_m": 37.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 49.5,
   "start_elevation_m": 222.96881589688115,
   "end_elevation_m": 221.7743189700421,
   "start_xy": [
    383531.66185287957,
    423728.7322129407
   ],
   "end_xy": [
    383508.5896787699,
    423726.36589508544
   ]
  },
  "min_50m": {
   "gradient_pct": -1.9852271466535285,
   "start_distance_m": 12.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 37.0,
   "start_elevation_m": 222.76693254336885,
   "end_elevation_m": 221.7743189700421,
   "start_xy": [
    383556.3993324489,
    423725.11875136534
   ],
   "end_xy": [
    383508.5896787699,
    423726.36589508544
   ]
  },
  "min_100m": {
   "gradient_pct": 6.088030130174673,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 222.80310085424833,
   "end_elevation_m": 228.891130984423,
   "start_xy": [
    383566.972,
    423720.241
   ],
   "end_xy": [
    383506.8539519461,
    423690.14139587677
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 40.13779954525489,
   "start_distance_m": 333.0,
   "end_distance_m": 335.0,
   "midpoint_distance_m": 334.0,
   "start_elevation_m": 271.135032525273,
   "end_elevation_m": 271.9377885161781,
   "start_xy": [
    383447.9148736818,
    423511.1528231158
   ],
   "end_xy": [
    383446.2538761431,
    423512.266864038
   ]
  },
  "max_3m": {
   "gradient_pct": 39.58582968456691,
   "start_distance_m": 333.0,
   "end_distance_m": 336.0,
   "midpoint_distance_m": 334.5,
   "start_elevation_m": 271.135032525273,
   "end_elevation_m": 272.32260741581,
   "start_xy": [
    383447.9148736818,
    423511.1528231158
   ],
   "end_xy": [
    383445.42337737366,
    423512.8238844991
   ]
  }
 },
 "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": 0.056,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.044,
   "obstruction_max_height_m": 16.55,
   "flagged_windows_m": [
    25,
    50
   ]
  },
  "excluded_ranges_m": [
   [
    51.0,
    73.0
   ]
  ],
  "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/SD8020.tif"
  ],
  "calculated_at": "2026-09-05T02:15:33+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "/mnt/HC_Volume_106794610/hunt-gb/regions/region-13.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": [
   "SD8020.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Whitewell Bottom",
  "county": "Lancashire"
 }
}