{
 "ocl_version": "0.1.0",
 "name": "Goose Nest Lane",
 "slug": "goose-nest-lane",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.242306059018745,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 829.0,
   "end_distance_m": 831.0,
   "start_elevation_m": 178.78300243250288,
   "end_elevation_m": 179.44784855368326,
   "min_gradient_pct": -26.487896210845463,
   "suppressed_max_gradient_pct": 49.622637537186876,
   "suppressed_location_m": [
    269.0,
    271.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 30.883124363142162,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 829.0,
   "end_distance_m": 832.0,
   "start_elevation_m": 178.78300243250288,
   "end_elevation_m": 179.70949616339715,
   "min_gradient_pct": -21.230187086683827,
   "suppressed_max_gradient_pct": 42.113472181576604,
   "suppressed_location_m": [
    785.0,
    788.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.684399664226135,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 141.0,
   "end_distance_m": 146.0,
   "start_elevation_m": 102.10693426638059,
   "end_elevation_m": 103.5411542495919,
   "min_gradient_pct": -16.63835395145327,
   "suppressed_max_gradient_pct": 32.40404327428223,
   "suppressed_location_m": [
    785.0,
    790.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.96472332703968,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 136.0,
   "end_distance_m": 146.0,
   "start_elevation_m": 100.94468191688793,
   "end_elevation_m": 103.5411542495919,
   "min_gradient_pct": -5.344709438455766
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.46845920098916,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 126.0,
   "end_distance_m": 146.0,
   "start_elevation_m": 98.64746240939407,
   "end_elevation_m": 103.5411542495919,
   "min_gradient_pct": -3.316399462468098
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.261346012800967,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 121.0,
   "end_distance_m": 146.0,
   "start_elevation_m": 97.47581774639166,
   "end_elevation_m": 103.5411542495919,
   "min_gradient_pct": -2.122220588683831
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.47753976137645,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 104.0,
   "end_distance_m": 154.0,
   "start_elevation_m": 93.92641739538597,
   "end_elevation_m": 105.16518727607419,
   "min_gradient_pct": 0.5725384392168564
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.451892369931443,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 59.0,
   "end_distance_m": 159.0,
   "start_elevation_m": 86.67325126965872,
   "end_elevation_m": 106.12514363959016,
   "min_gradient_pct": 2.2598884933277077
  }
 ],
 "shape": {
  "ascent_concentration": 0.369,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 261.0,
  "shape_class": "sustained"
 },
 "length_m": 1482.1281821017856,
 "start_elevation_m": 82.5733222988897,
 "end_elevation_m": 232.1445074066171,
 "endpoint_gain_m": 149.5711851077274,
 "overall_gradient_pct": 10.091649758364527,
 "accumulated_ascent_m": 153.34186908897587,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.684399664226135,
   "start_distance_m": 141.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 143.5,
   "start_elevation_m": 102.10693426638059,
   "end_elevation_m": 103.5411542495919,
   "start_xy": [
    405659.0156303849,
    422888.3735034443
   ],
   "end_xy": [
    405664.01183185267,
    422888.17864222836
   ]
  },
  "max_10m": {
   "gradient_pct": 25.96472332703968,
   "start_distance_m": 136.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 141.0,
   "start_elevation_m": 100.94468191688793,
   "end_elevation_m": 103.5411542495919,
   "start_xy": [
    405654.2483986761,
    422889.4912367688
   ],
   "end_xy": [
    405664.01183185267,
    422888.17864222836
   ]
  },
  "max_20m": {
   "gradient_pct": 24.46845920098916,
   "start_distance_m": 126.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 136.0,
   "start_elevation_m": 98.64746240939407,
   "end_elevation_m": 103.5411542495919,
   "start_xy": [
    405645.96468632814,
    422894.96192942385
   ],
   "end_xy": [
    405664.01183185267,
    422888.17864222836
   ]
  },
  "max_25m": {
   "gradient_pct": 24.261346012800967,
   "start_distance_m": 121.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 133.5,
   "start_elevation_m": 97.47581774639166,
   "end_elevation_m": 103.5411542495919,
   "start_xy": [
    405642.1107247549,
    422898.14736192074
   ],
   "end_xy": [
    405664.01183185267,
    422888.17864222836
   ]
  },
  "max_50m": {
   "gradient_pct": 22.47753976137645,
   "start_distance_m": 104.0,
   "end_distance_m": 154.0,
   "midpoint_distance_m": 129.0,
   "start_elevation_m": 93.92641739538597,
   "end_elevation_m": 105.16518727607419,
   "start_xy": [
    405632.50268025533,
    422912.0225147294
   ],
   "end_xy": [
    405672.0058433894,
    422887.91874334257
   ]
  },
  "max_100m": {
   "gradient_pct": 19.451892369931443,
   "start_distance_m": 59.0,
   "end_distance_m": 159.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 86.67325126965872,
   "end_elevation_m": 106.12514363959016,
   "start_xy": [
    405596.9013014591,
    422932.8984018204
   ],
   "end_xy": [
    405677.00268531666,
    422888.09642494953
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -16.63835395145327,
   "start_distance_m": 390.0,
   "end_distance_m": 395.0,
   "midpoint_distance_m": 392.5,
   "start_elevation_m": 122.75247907603313,
   "end_elevation_m": 121.92056137846046,
   "start_xy": [
    405652.77229431894,
    422809.59403797187
   ],
   "end_xy": [
    405648.52443375875,
    422806.95667552785
   ]
  },
  "min_10m": {
   "gradient_pct": -5.344709438455766,
   "start_distance_m": 385.0,
   "end_distance_m": 395.0,
   "midpoint_distance_m": 390.0,
   "start_elevation_m": 122.45503232230604,
   "end_elevation_m": 121.92056137846046,
   "start_xy": [
    405657.02015487914,
    422812.2314004159
   ],
   "end_xy": [
    405648.52443375875,
    422806.95667552785
   ]
  },
  "min_20m": {
   "gradient_pct": -3.316399462468098,
   "start_distance_m": 375.0,
   "end_distance_m": 395.0,
   "midpoint_distance_m": 385.0,
   "start_elevation_m": 122.58384127095408,
   "end_elevation_m": 121.92056137846046,
   "start_xy": [
    405665.5158759995,
    422817.5061253039
   ],
   "end_xy": [
    405648.52443375875,
    422806.95667552785
   ]
  },
  "min_25m": {
   "gradient_pct": -2.122220588683831,
   "start_distance_m": 370.0,
   "end_distance_m": 395.0,
   "midpoint_distance_m": 382.5,
   "start_elevation_m": 122.45111652563142,
   "end_elevation_m": 121.92056137846046,
   "start_xy": [
    405669.6778357771,
    422820.2594686694
   ],
   "end_xy": [
    405648.52443375875,
    422806.95667552785
   ]
  },
  "min_50m": {
   "gradient_pct": 0.5725384392168564,
   "start_distance_m": 361.0,
   "end_distance_m": 411.0,
   "midpoint_distance_m": 386.0,
   "start_elevation_m": 122.04664171512073,
   "end_elevation_m": 122.33291093472916,
   "start_xy": [
    405676.44793015573,
    422826.189546418
   ],
   "end_xy": [
    405634.3727569276,
    422799.5480916797
   ]
  },
  "min_100m": {
   "gradient_pct": 2.2598884933277077,
   "start_distance_m": 360.0,
   "end_distance_m": 460.0,
   "midpoint_distance_m": 410.0,
   "start_elevation_m": 121.98885505081041,
   "end_elevation_m": 124.24874354413812,
   "start_xy": [
    405677.20016286446,
    422826.84844394564
   ],
   "end_xy": [
    405590.62023801915,
    422777.5289585941
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.242306059018745,
   "start_distance_m": 829.0,
   "end_distance_m": 831.0,
   "midpoint_distance_m": 830.0,
   "start_elevation_m": 178.78300243250288,
   "end_elevation_m": 179.44784855368326,
   "start_xy": [
    405798.43829221517,
    422615.7228864339
   ],
   "end_xy": [
    405800.2936237448,
    422616.46970964933
   ]
  },
  "max_3m": {
   "gradient_pct": 30.883124363142162,
   "start_distance_m": 829.0,
   "end_distance_m": 832.0,
   "midpoint_distance_m": 830.5,
   "start_elevation_m": 178.78300243250288,
   "end_elevation_m": 179.70949616339715,
   "start_xy": [
    405798.43829221517,
    422615.7228864339
   ],
   "end_xy": [
    405801.2212895096,
    422616.8431212571
   ]
  }
 },
 "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": 0.014,
   "obstruction_max_height_m": 7.43,
   "flagged_windows_m": []
  },
  "structure_suppression": {
   "masked_fraction": 0.008,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    267.0,
    272.0
   ],
   [
    785.0,
    790.0
   ]
  ],
  "review": [],
  "extent": [
   "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/SE0520.tif"
  ],
  "calculated_at": "2026-08-15T19:26:25+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": [
   "SE0520.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 10.7% over 200 m (Terrain 50), gain 21.4 m over 173 m way. EXTENDED by graph walk: +6 segment(s) at base, +4 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 9 overlapping proposal(s): boggart-lane, discovered-lane-53-7029-1-9137, goose-nest-lane-2, norland-road, scar-head-road, sowerby-croft-lane \u2026"
 },
 "area": {
  "place": "Hullen Edge",
  "county": ""
 }
}