{
 "ocl_version": "0.1.0",
 "name": "Wood Lane",
 "slug": "wood-lane-4",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.340109260622114,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 446.0,
   "end_distance_m": 448.0,
   "start_elevation_m": 181.1959927020937,
   "end_elevation_m": 181.74279488730613,
   "min_gradient_pct": -8.038428649078355
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.66245800189036,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 445.0,
   "end_distance_m": 448.0,
   "start_elevation_m": 180.94292114724942,
   "end_elevation_m": 181.74279488730613,
   "min_gradient_pct": -4.463030204122258
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.644075291860986,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 126.0,
   "end_distance_m": 131.0,
   "start_elevation_m": 132.6275377756373,
   "end_elevation_m": 133.90974154023036,
   "min_gradient_pct": 0.399821713162396
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.772101234879642,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 124.0,
   "end_distance_m": 134.0,
   "start_elevation_m": 132.14903420560177,
   "end_elevation_m": 134.62624432908973,
   "min_gradient_pct": 2.4613727044334155
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.41873324812505,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 124.0,
   "end_distance_m": 144.0,
   "start_elevation_m": 132.14903420560177,
   "end_elevation_m": 137.03278085522678,
   "min_gradient_pct": 3.904044492226433
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.115191132380687,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 121.0,
   "end_distance_m": 146.0,
   "start_elevation_m": 131.45333532394864,
   "end_elevation_m": 137.4821331070438,
   "min_gradient_pct": 3.9528225043654857
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.897713230034014,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 109.0,
   "end_distance_m": 159.0,
   "start_elevation_m": 128.93403371513057,
   "end_elevation_m": 140.38289033014757,
   "min_gradient_pct": 5.141625134369917
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.4714693190072,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 97.0,
   "end_distance_m": 197.0,
   "start_elevation_m": 126.61954536169902,
   "end_elevation_m": 148.09101468070622,
   "min_gradient_pct": 6.847337176611205
  }
 ],
 "shape": {
  "ascent_concentration": 0.377,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 372.0,
  "shape_class": "sustained"
 },
 "length_m": 743.1247272943931,
 "start_elevation_m": 112.20772607019084,
 "end_elevation_m": 206.97465534461836,
 "endpoint_gain_m": 94.76692927442751,
 "overall_gradient_pct": 12.752493059874329,
 "accumulated_ascent_m": 94.96809668052468,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.644075291860986,
   "start_distance_m": 126.0,
   "end_distance_m": 131.0,
   "midpoint_distance_m": 128.5,
   "start_elevation_m": 132.6275377756373,
   "end_elevation_m": 133.90974154023036,
   "start_xy": [
    404250.0515231737,
    423629.75068848283
   ],
   "end_xy": [
    404248.3485571733,
    423625.0497306571
   ]
  },
  "max_10m": {
   "gradient_pct": 24.772101234879642,
   "start_distance_m": 124.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 129.0,
   "start_elevation_m": 132.14903420560177,
   "end_elevation_m": 134.62624432908973,
   "start_xy": [
    404250.7878060628,
    423631.6102280783
   ],
   "end_xy": [
    404247.3302159829,
    423622.2278551779
   ]
  },
  "max_20m": {
   "gradient_pct": 24.41873324812505,
   "start_distance_m": 124.0,
   "end_distance_m": 144.0,
   "midpoint_distance_m": 134.0,
   "start_elevation_m": 132.14903420560177,
   "end_elevation_m": 137.03278085522678,
   "start_xy": [
    404250.7878060628,
    423631.6102280783
   ],
   "end_xy": [
    404243.93574534834,
    423612.8216035806
   ]
  },
  "max_25m": {
   "gradient_pct": 24.115191132380687,
   "start_distance_m": 121.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 133.5,
   "start_elevation_m": 131.45333532394864,
   "end_elevation_m": 137.4821331070438,
   "start_xy": [
    404251.89223039645,
    423634.3995374716
   ],
   "end_xy": [
    404243.25685122143,
    423610.9403532612
   ]
  },
  "max_50m": {
   "gradient_pct": 22.897713230034014,
   "start_distance_m": 109.0,
   "end_distance_m": 159.0,
   "midpoint_distance_m": 134.0,
   "start_elevation_m": 128.93403371513057,
   "end_elevation_m": 140.38289033014757,
   "start_xy": [
    404256.30992773105,
    423645.55677504453
   ],
   "end_xy": [
    404237.3588266741,
    423599.35975970636
   ]
  },
  "max_100m": {
   "gradient_pct": 21.4714693190072,
   "start_distance_m": 97.0,
   "end_distance_m": 197.0,
   "midpoint_distance_m": 147.0,
   "start_elevation_m": 126.61954536169902,
   "end_elevation_m": 148.09101468070622,
   "start_xy": [
    404260.72762506566,
    423656.71401261754
   ],
   "end_xy": [
    404215.68578793807,
    423568.24107077904
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.399821713162396,
   "start_distance_m": 438.0,
   "end_distance_m": 443.0,
   "midpoint_distance_m": 440.5,
   "start_elevation_m": 180.81188169088063,
   "end_elevation_m": 180.83187277653875,
   "start_xy": [
    404180.2349922146,
    423393.159629708
   ],
   "end_xy": [
    404183.8404548399,
    423389.69543582527
   ]
  },
  "min_10m": {
   "gradient_pct": 2.4613727044334155,
   "start_distance_m": 733.0,
   "end_distance_m": 743.0,
   "midpoint_distance_m": 738.0,
   "start_elevation_m": 206.7275169980298,
   "end_elevation_m": 206.97365426847315,
   "start_xy": [
    404189.46978828224,
    423210.46285248065
   ],
   "end_xy": [
    404188.1929259583,
    423200.54470635316
   ]
  },
  "min_20m": {
   "gradient_pct": 3.904044492226433,
   "start_distance_m": 723.0,
   "end_distance_m": 743.0,
   "midpoint_distance_m": 733.0,
   "start_elevation_m": 206.19284537002787,
   "end_elevation_m": 206.97365426847315,
   "start_xy": [
    404190.7466506061,
    423220.3809986081
   ],
   "end_xy": [
    404188.1929259583,
    423200.54470635316
   ]
  },
  "min_25m": {
   "gradient_pct": 3.9528225043654857,
   "start_distance_m": 718.0,
   "end_distance_m": 743.0,
   "midpoint_distance_m": 730.5,
   "start_elevation_m": 205.98544864238178,
   "end_elevation_m": 206.97365426847315,
   "start_xy": [
    404191.38508176804,
    423225.3400716718
   ],
   "end_xy": [
    404188.1929259583,
    423200.54470635316
   ]
  },
  "min_50m": {
   "gradient_pct": 5.141625134369917,
   "start_distance_m": 693.0,
   "end_distance_m": 743.0,
   "midpoint_distance_m": 718.0,
   "start_elevation_m": 204.4028417012882,
   "end_elevation_m": 206.97365426847315,
   "start_xy": [
    404198.19276546873,
    423245.6713141285
   ],
   "end_xy": [
    404188.1929259583,
    423200.54470635316
   ]
  },
  "min_100m": {
   "gradient_pct": 6.847337176611205,
   "start_distance_m": 643.0,
   "end_distance_m": 743.0,
   "midpoint_distance_m": 693.0,
   "start_elevation_m": 200.12631709186195,
   "end_elevation_m": 206.97365426847315,
   "start_xy": [
    404246.73882599815,
    423256.4120181321
   ],
   "end_xy": [
    404188.1929259583,
    423200.54470635316
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.340109260622114,
   "start_distance_m": 446.0,
   "end_distance_m": 448.0,
   "midpoint_distance_m": 447.0,
   "start_elevation_m": 181.1959927020937,
   "end_elevation_m": 181.74279488730613,
   "start_xy": [
    404186.00373241515,
    423387.61691949563
   ],
   "end_xy": [
    404187.4459174653,
    423386.2312419425
   ]
  },
  "max_3m": {
   "gradient_pct": 26.66245800189036,
   "start_distance_m": 445.0,
   "end_distance_m": 448.0,
   "midpoint_distance_m": 446.5,
   "start_elevation_m": 180.94292114724942,
   "end_elevation_m": 181.74279488730613,
   "start_xy": [
    404185.2826398901,
    423388.30975827214
   ],
   "end_xy": [
    404187.4459174653,
    423386.2312419425
   ]
  }
 },
 "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": 0.001,
   "obstruction_max_height_m": 4.45,
   "flagged_windows_m": []
  },
  "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/SE0020.tif"
  ],
  "calculated_at": "2026-08-15T19:28:18+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/england-2026-08-12-roads.osm.pbf",
  "osm_snapshot": "2026-08-12T20:21:46Z",
  "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": [
   "SE0020.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 18.4% over 200 m (Terrain 50), gain 36.8 m over 199 m way. EXTENDED by graph walk: +0 segment(s) at base, +6 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 1 overlapping proposal(s): wood-lane-3"
 },
 "area": {
  "place": "Sowerby",
  "county": ""
 }
}