{
 "ocl_version": "0.1.0",
 "name": "Bedlam Lane",
 "slug": "bedlam-lane",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 47.62272936315597,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 549.0,
   "end_distance_m": 551.0,
   "start_elevation_m": 85.25278184675314,
   "end_elevation_m": 86.20523643401626,
   "min_gradient_pct": -24.34993919383288,
   "suppressed_max_gradient_pct": 64.0733633016147,
   "suppressed_location_m": [
    568.0,
    570.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 44.41549088938217,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 548.0,
   "end_distance_m": 551.0,
   "start_elevation_m": 84.87277170733479,
   "end_elevation_m": 86.20523643401626,
   "min_gradient_pct": -22.443803637456956,
   "suppressed_max_gradient_pct": 58.501215836115726,
   "suppressed_location_m": [
    567.0,
    570.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 41.02061904745682,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 547.0,
   "end_distance_m": 552.0,
   "start_elevation_m": 84.48450776373814,
   "end_elevation_m": 86.53553871611098,
   "min_gradient_pct": -16.08426419005184,
   "suppressed_max_gradient_pct": 42.39735743519759,
   "suppressed_location_m": [
    565.0,
    570.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 36.92929130014036,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 543.0,
   "end_distance_m": 553.0,
   "start_elevation_m": 83.10564511506742,
   "end_elevation_m": 86.79857424508145,
   "min_gradient_pct": -11.422229072355066
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.618640884204666,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 542.0,
   "end_distance_m": 562.0,
   "start_elevation_m": 82.9098328864416,
   "end_elevation_m": 88.43356106328254,
   "min_gradient_pct": -10.539065424970033
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.231006447454774,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 539.0,
   "end_distance_m": 564.0,
   "start_elevation_m": 82.55349670477685,
   "end_elevation_m": 88.61124831664054,
   "min_gradient_pct": -10.364375027737879,
   "suppressed_max_gradient_pct": 26.31544220853334,
   "suppressed_location_m": [
    545.0,
    570.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.776770865168004,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 505.0,
   "end_distance_m": 555.0,
   "start_elevation_m": 76.87652341664746,
   "end_elevation_m": 87.26490884923146,
   "min_gradient_pct": -8.477965613436439,
   "suppressed_max_gradient_pct": 21.153339976647516,
   "suppressed_location_m": [
    520.0,
    570.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.870715777549293,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 462.0,
   "end_distance_m": 562.0,
   "start_elevation_m": 70.56284528573325,
   "end_elevation_m": 88.43356106328254,
   "min_gradient_pct": -6.513199381164071,
   "suppressed_max_gradient_pct": 19.224363607495775,
   "suppressed_location_m": [
    474.0,
    574.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.475,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 78.0,
  "shape_class": "stepped"
 },
 "length_m": 3052.450394493491,
 "start_elevation_m": 57.06238008171208,
 "end_elevation_m": 191.9003673667918,
 "endpoint_gain_m": 134.83798728507975,
 "overall_gradient_pct": 4.41736866644328,
 "accumulated_ascent_m": 167.42659177492624,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 41.02061904745682,
   "start_distance_m": 547.0,
   "end_distance_m": 552.0,
   "midpoint_distance_m": 549.5,
   "start_elevation_m": 84.48450776373814,
   "end_elevation_m": 86.53553871611098,
   "start_xy": [
    326325.9095869339,
    103615.29603502192
   ],
   "end_xy": [
    326329.368856655,
    103611.68584763118
   ]
  },
  "max_10m": {
   "gradient_pct": 36.92929130014036,
   "start_distance_m": 543.0,
   "end_distance_m": 553.0,
   "midpoint_distance_m": 548.0,
   "start_elevation_m": 83.10564511506742,
   "end_elevation_m": 86.79857424508145,
   "start_xy": [
    326323.142171157,
    103618.18418493454
   ],
   "end_xy": [
    326330.0607105993,
    103610.96381015301
   ]
  },
  "max_20m": {
   "gradient_pct": 27.618640884204666,
   "start_distance_m": 542.0,
   "end_distance_m": 562.0,
   "midpoint_distance_m": 552.0,
   "start_elevation_m": 82.9098328864416,
   "end_elevation_m": 88.43356106328254,
   "start_xy": [
    326322.4503172128,
    103618.90622241268
   ],
   "end_xy": [
    326337.6394174062,
    103606.30994061012
   ]
  },
  "max_25m": {
   "gradient_pct": 24.231006447454774,
   "start_distance_m": 539.0,
   "end_distance_m": 564.0,
   "midpoint_distance_m": 551.5,
   "start_elevation_m": 82.55349670477685,
   "end_elevation_m": 88.61124831664054,
   "start_xy": [
    326320.3747553801,
    103621.07233484714
   ],
   "end_xy": [
    326339.43299387535,
    103605.42502058599
   ]
  },
  "max_50m": {
   "gradient_pct": 20.776770865168004,
   "start_distance_m": 505.0,
   "end_distance_m": 555.0,
   "midpoint_distance_m": 530.0,
   "start_elevation_m": 76.87652341664746,
   "end_elevation_m": 87.26490884923146,
   "start_xy": [
    326293.7801001995,
    103642.24820437007
   ],
   "end_xy": [
    326331.4444184877,
    103609.51973519672
   ]
  },
  "max_100m": {
   "gradient_pct": 17.870715777549293,
   "start_distance_m": 462.0,
   "end_distance_m": 562.0,
   "midpoint_distance_m": 512.0,
   "start_elevation_m": 70.56284528573325,
   "end_elevation_m": 88.43356106328254,
   "start_xy": [
    326256.4645480435,
    103662.770438894
   ],
   "end_xy": [
    326337.6394174062,
    103606.30994061012
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -16.08426419005184,
   "start_distance_m": 1373.0,
   "end_distance_m": 1378.0,
   "midpoint_distance_m": 1375.5,
   "start_elevation_m": 151.7307665535299,
   "end_elevation_m": 150.9265533440273,
   "start_xy": [
    327081.6382039077,
    103464.60039688979
   ],
   "end_xy": [
    327085.95930490666,
    103462.16937576063
   ]
  },
  "min_10m": {
   "gradient_pct": -11.422229072355066,
   "start_distance_m": 257.0,
   "end_distance_m": 267.0,
   "midpoint_distance_m": 262.0,
   "start_elevation_m": 66.45183615355,
   "end_elevation_m": 65.3096132463145,
   "start_xy": [
    326102.4919046602,
    103781.16425231978
   ],
   "end_xy": [
    326106.7089527489,
    103772.09692055034
   ]
  },
  "min_20m": {
   "gradient_pct": -10.539065424970033,
   "start_distance_m": 258.0,
   "end_distance_m": 278.0,
   "midpoint_distance_m": 268.0,
   "start_elevation_m": 66.38736964644873,
   "end_elevation_m": 64.27955656145473,
   "start_xy": [
    326102.913609469,
    103780.25751914283
   ],
   "end_xy": [
    326111.34770564653,
    103762.12285560396
   ]
  },
  "min_25m": {
   "gradient_pct": -10.364375027737879,
   "start_distance_m": 249.0,
   "end_distance_m": 274.0,
   "midpoint_distance_m": 261.5,
   "start_elevation_m": 67.2621954510751,
   "end_elevation_m": 64.67110169414063,
   "start_xy": [
    326099.1182661892,
    103788.41811773533
   ],
   "end_xy": [
    326109.66088641103,
    103765.74978831173
   ]
  },
  "min_50m": {
   "gradient_pct": -8.477965613436439,
   "start_distance_m": 238.0,
   "end_distance_m": 288.0,
   "midpoint_distance_m": 263.0,
   "start_elevation_m": 67.90631983074925,
   "end_elevation_m": 63.667337024031035,
   "start_xy": [
    326094.4800833003,
    103798.39244773061
   ],
   "end_xy": [
    326116.3986769739,
    103753.54134140791
   ]
  },
  "min_100m": {
   "gradient_pct": -6.513199381164071,
   "start_distance_m": 2578.0,
   "end_distance_m": 2678.0,
   "midpoint_distance_m": 2628.0,
   "start_elevation_m": 170.07486970408326,
   "end_elevation_m": 163.56167032291918,
   "start_xy": [
    327878.1282757716,
    104251.2119708594
   ],
   "end_xy": [
    327969.66393090825,
    104290.26296427219
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 47.62272936315597,
   "start_distance_m": 549.0,
   "end_distance_m": 551.0,
   "midpoint_distance_m": 550.0,
   "start_elevation_m": 85.25278184675314,
   "end_elevation_m": 86.20523643401626,
   "start_xy": [
    326327.2932948224,
    103613.85196006563
   ],
   "end_xy": [
    326328.6770027108,
    103612.40788510932
   ]
  },
  "max_3m": {
   "gradient_pct": 44.41549088938217,
   "start_distance_m": 548.0,
   "end_distance_m": 551.0,
   "midpoint_distance_m": 549.5,
   "start_elevation_m": 84.87277170733479,
   "end_elevation_m": 86.20523643401626,
   "start_xy": [
    326326.6014408781,
    103614.57399754378
   ],
   "end_xy": [
    326328.6770027108,
    103612.40788510932
   ]
  }
 },
 "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": 0.061,
   "obstruction_max_height_m": 19.92,
   "flagged_windows_m": []
  },
  "structure_suppression": {
   "masked_fraction": 0.011,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    26.0
   ],
   [
    566.0,
    571.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_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/ST2500.tif"
  ],
  "calculated_at": "2026-08-15T05:30:54+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": [
   "ST2500.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 13.6% over 200 m (Terrain 50), gain 54.4 m over 691 m way. EXTENDED by graph walk: +3 segment(s) at base, +3 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 5 overlapping proposal(s): discovered-lane-50-8263-3-0347, discovered-lane-50-8313-3-0301, discovered-lane-50-8340-3-0234, policeman-s-hill, waterhouse-lane"
 },
 "area": {
  "place": "Membury",
  "county": "Devon"
 }
}