{
 "ocl_version": "0.1.0",
 "name": "Wood Lane",
 "slug": "wood-lane",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.451016744348976,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 370.0,
   "end_distance_m": 372.0,
   "start_elevation_m": 240.45832733949274,
   "end_elevation_m": 240.98734767437972,
   "min_gradient_pct": -15.589344023520368,
   "suppressed_max_gradient_pct": 65.18720497728481,
   "suppressed_location_m": [
    133.0,
    135.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.493774871783142,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 369.0,
   "end_distance_m": 372.0,
   "start_elevation_m": 240.22253442822623,
   "end_elevation_m": 240.98734767437972,
   "min_gradient_pct": -14.306659631985971,
   "suppressed_max_gradient_pct": 62.54966004400634,
   "suppressed_location_m": [
    132.0,
    135.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.795288177088082,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 369.0,
   "end_distance_m": 374.0,
   "start_elevation_m": 240.22253442822623,
   "end_elevation_m": 241.36229883708063,
   "min_gradient_pct": -12.055069954767532,
   "suppressed_max_gradient_pct": 60.18830199037893,
   "suppressed_location_m": [
    129.0,
    134.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 19.639968320872185,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 281.0,
   "end_distance_m": 291.0,
   "start_elevation_m": 231.06612720229322,
   "end_elevation_m": 233.03012403438044,
   "min_gradient_pct": -8.333956481761788,
   "suppressed_max_gradient_pct": 53.616946927767515,
   "suppressed_location_m": [
    128.0,
    138.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 16.537449336270527,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 279.0,
   "end_distance_m": 299.0,
   "start_elevation_m": 230.7596062567485,
   "end_elevation_m": 234.0670961240026,
   "min_gradient_pct": -6.7658489436138325,
   "suppressed_max_gradient_pct": 34.19081188246608,
   "suppressed_location_m": [
    124.0,
    144.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 16.705235848578354,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 368.0,
   "end_distance_m": 393.0,
   "start_elevation_m": 240.06905321094771,
   "end_elevation_m": 244.2453621730923,
   "min_gradient_pct": -6.054969241577965,
   "suppressed_max_gradient_pct": 28.7587964895406,
   "suppressed_location_m": [
    123.0,
    148.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 14.069472633947157,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 362.0,
   "end_distance_m": 412.0,
   "start_elevation_m": 239.58886542233643,
   "end_elevation_m": 246.62360173931,
   "min_gradient_pct": -4.215465108610488,
   "suppressed_max_gradient_pct": 17.900107896888073,
   "suppressed_location_m": [
    100.0,
    150.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 12.168500122429831,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 369.0,
   "end_distance_m": 469.0,
   "start_elevation_m": 240.22253442822623,
   "end_elevation_m": 252.39103455065606,
   "min_gradient_pct": -2.7430745023458485,
   "suppressed_max_gradient_pct": 13.697809821279918,
   "suppressed_location_m": [
    44.0,
    144.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.372,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 39.0,
  "shape_class": "sustained"
 },
 "length_m": 1104.2812221385275,
 "start_elevation_m": 204.53302771849934,
 "end_elevation_m": 283.99299196319134,
 "endpoint_gain_m": 79.459964244692,
 "overall_gradient_pct": 7.19562758577127,
 "accumulated_ascent_m": 86.46078746920077,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.795288177088082,
   "start_distance_m": 369.0,
   "end_distance_m": 374.0,
   "midpoint_distance_m": 371.5,
   "start_elevation_m": 240.22253442822623,
   "end_elevation_m": 241.36229883708063,
   "start_xy": [
    425188.7244055514,
    356806.3117389702
   ],
   "end_xy": [
    425190.11881419556,
    356811.1133662144
   ]
  },
  "max_10m": {
   "gradient_pct": 19.639968320872185,
   "start_distance_m": 281.0,
   "end_distance_m": 291.0,
   "midpoint_distance_m": 286.0,
   "start_elevation_m": 231.06612720229322,
   "end_elevation_m": 233.03012403438044,
   "start_xy": [
    425128.77748527325,
    356762.1548653252
   ],
   "end_xy": [
    425129.64927095943,
    356771.13759251504
   ]
  },
  "max_20m": {
   "gradient_pct": 16.537449336270527,
   "start_distance_m": 279.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 289.0,
   "start_elevation_m": 230.7596062567485,
   "end_elevation_m": 234.0670961240026,
   "start_xy": [
    425130.2226969957,
    356760.772344773
   ],
   "end_xy": [
    425137.26468621957,
    356772.104283335
   ]
  },
  "max_25m": {
   "gradient_pct": 16.705235848578354,
   "start_distance_m": 368.0,
   "end_distance_m": 393.0,
   "midpoint_distance_m": 380.5,
   "start_elevation_m": 240.06905321094771,
   "end_elevation_m": 244.2453621730923,
   "start_xy": [
    425188.4456142132,
    356805.3513872691
   ],
   "end_xy": [
    425199.771937496,
    356827.00585363316
   ]
  },
  "max_50m": {
   "gradient_pct": 14.069472633947157,
   "start_distance_m": 362.0,
   "end_distance_m": 412.0,
   "midpoint_distance_m": 387.0,
   "start_elevation_m": 239.58886542233643,
   "end_elevation_m": 246.62360173931,
   "start_xy": [
    425186.7719647044,
    356799.58953885495
   ],
   "end_xy": [
    425216.1857404497,
    356836.57596694556
   ]
  },
  "max_100m": {
   "gradient_pct": 12.168500122429831,
   "start_distance_m": 369.0,
   "end_distance_m": 469.0,
   "midpoint_distance_m": 419.0,
   "start_elevation_m": 240.22253442822623,
   "end_elevation_m": 252.39103455065606,
   "start_xy": [
    425188.7244055514,
    356806.3117389702
   ],
   "end_xy": [
    425263.1544048061,
    356868.54050506634
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.055069954767532,
   "start_distance_m": 192.0,
   "end_distance_m": 197.0,
   "midpoint_distance_m": 194.5,
   "start_elevation_m": 224.37471710146718,
   "end_elevation_m": 223.7719636037288,
   "start_xy": [
    425212.1060685727,
    356731.7080654184
   ],
   "end_xy": [
    425207.3703081878,
    356733.31198984804
   ]
  },
  "min_10m": {
   "gradient_pct": -8.333956481761788,
   "start_distance_m": 1007.0,
   "end_distance_m": 1017.0,
   "midpoint_distance_m": 1012.0,
   "start_elevation_m": 285.3511909367046,
   "end_elevation_m": 284.5177952885284,
   "start_xy": [
    425142.68902160233,
    357000.18797006656
   ],
   "end_xy": [
    425134.48609759094,
    357005.9069273126
   ]
  },
  "min_20m": {
   "gradient_pct": -6.7658489436138325,
   "start_distance_m": 1005.0,
   "end_distance_m": 1025.0,
   "midpoint_distance_m": 1015.0,
   "start_elevation_m": 285.439830943574,
   "end_elevation_m": 284.08666115485124,
   "start_xy": [
    425144.3468217598,
    356999.06917668175
   ],
   "end_xy": [
    425127.9274670323,
    357010.4874175081
   ]
  },
  "min_25m": {
   "gradient_pct": -6.054969241577965,
   "start_distance_m": 1001.0,
   "end_distance_m": 1026.0,
   "midpoint_distance_m": 1013.5,
   "start_elevation_m": 285.54252003023464,
   "end_elevation_m": 284.02877771984015,
   "start_xy": [
    425147.7778588795,
    356997.0172311362
   ],
   "end_xy": [
    425127.09654933476,
    357011.0438128531
   ]
  },
  "min_50m": {
   "gradient_pct": -4.215465108610488,
   "start_distance_m": 996.0,
   "end_distance_m": 1046.0,
   "midpoint_distance_m": 1021.0,
   "start_elevation_m": 285.6164795487115,
   "end_elevation_m": 283.50874699440624,
   "start_xy": [
    425152.119790029,
    356994.53778892895
   ],
   "end_xy": [
    425110.3214575344,
    357021.9333382168
   ]
  },
  "min_100m": {
   "gradient_pct": -2.7430745023458485,
   "start_distance_m": 961.0,
   "end_distance_m": 1061.0,
   "midpoint_distance_m": 1011.0,
   "start_elevation_m": 286.12383633197,
   "end_elevation_m": 283.38076182962413,
   "start_xy": [
    425185.15365072817,
    356983.49330475356
   ],
   "end_xy": [
    425096.7725627854,
    357028.172424812
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.451016744348976,
   "start_distance_m": 370.0,
   "end_distance_m": 372.0,
   "midpoint_distance_m": 371.0,
   "start_elevation_m": 240.45832733949274,
   "end_elevation_m": 240.98734767437972,
   "start_xy": [
    425189.00319688953,
    356807.2720906713
   ],
   "end_xy": [
    425189.5607795658,
    356809.19279407343
   ]
  },
  "max_3m": {
   "gradient_pct": 25.493774871783142,
   "start_distance_m": 369.0,
   "end_distance_m": 372.0,
   "midpoint_distance_m": 370.5,
   "start_elevation_m": 240.22253442822623,
   "end_elevation_m": 240.98734767437972,
   "start_xy": [
    425188.7244055514,
    356806.3117389702
   ],
   "end_xy": [
    425189.5607795658,
    356809.19279407343
   ]
  }
 },
 "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": 0.033,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.062,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.125,
   "obstruction_max_height_m": 24.16,
   "flagged_windows_m": [
    25
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    25.0
   ],
   [
    127.0,
    137.0
   ],
   [
    170.0,
    200.0
   ]
  ],
  "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/dtm_1m/E424000_N356000_2000m.tif"
  ],
  "calculated_at": "2026-09-15T07:55:12+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/england-2026-08-27.osm.pbf",
  "osm_snapshot": "2026-08-26T20:22:15Z",
  "run_id": "reline-followup-260915",
  "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": [
   "E424000_N356000_2000m.tif"
  ],
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "structure_mask_ranges_m": [
   [
    0.0,
    15.0
   ],
   [
    0.0,
    20.7
   ]
  ],
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Griffe Grange Valley",
  "county": "Derbyshire"
 }
}