{
 "ocl_version": "0.1.0",
 "name": "Love's Lane",
 "slug": "love-s-lane",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.633863956440564,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 120.0,
   "end_distance_m": 122.0,
   "start_elevation_m": 145.98959051672708,
   "end_elevation_m": 146.5622677958559,
   "min_gradient_pct": -10.948891831493768
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.286666440778617,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 121.0,
   "end_distance_m": 124.0,
   "start_elevation_m": 146.21470935954233,
   "end_elevation_m": 147.03330935276568,
   "min_gradient_pct": -7.796624009893094
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.61132580380729,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 170.0,
   "end_distance_m": 175.0,
   "start_elevation_m": 153.51994362403352,
   "end_elevation_m": 154.80050991422388,
   "min_gradient_pct": -4.723426585680954
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.19768711115188,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 442.0,
   "end_distance_m": 452.0,
   "start_elevation_m": 179.17132370876197,
   "end_elevation_m": 181.49109241987716,
   "min_gradient_pct": -1.249377563707128
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.267641475813548,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 434.0,
   "end_distance_m": 454.0,
   "start_elevation_m": 177.52033390054928,
   "end_elevation_m": 181.77386219571198,
   "min_gradient_pct": 0.2748359394834665
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.352847953673404,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 427.0,
   "end_distance_m": 452.0,
   "start_elevation_m": 176.4028804314588,
   "end_elevation_m": 181.49109241987716,
   "min_gradient_pct": 1.104062787220414
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.181294389179527,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 169.0,
   "end_distance_m": 219.0,
   "start_elevation_m": 153.3048184767246,
   "end_elevation_m": 161.89546567131435,
   "min_gradient_pct": 2.5180204747770176
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.249483114175916,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 100.0,
   "end_distance_m": 200.0,
   "start_elevation_m": 142.57053055459932,
   "end_elevation_m": 158.82001366877523,
   "min_gradient_pct": 4.149848418617239
  }
 ],
 "shape": {
  "ascent_concentration": 0.351,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 137.0,
  "shape_class": "sustained"
 },
 "length_m": 457.6286767594745,
 "start_elevation_m": 130.10085576294196,
 "end_elevation_m": 182.0487016790167,
 "endpoint_gain_m": 51.947845916074726,
 "overall_gradient_pct": 11.351527680460036,
 "accumulated_ascent_m": 52.79137361240379,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.61132580380729,
   "start_distance_m": 170.0,
   "end_distance_m": 175.0,
   "midpoint_distance_m": 172.5,
   "start_elevation_m": 153.51994362403352,
   "end_elevation_m": 154.80050991422388,
   "start_xy": [
    340114.6919765053,
    94289.96305722545
   ],
   "end_xy": [
    340118.0717401305,
    94293.64778215389
   ]
  },
  "max_10m": {
   "gradient_pct": 23.19768711115188,
   "start_distance_m": 442.0,
   "end_distance_m": 452.0,
   "midpoint_distance_m": 447.0,
   "start_elevation_m": 179.17132370876197,
   "end_elevation_m": 181.49109241987716,
   "start_xy": [
    340346.1563692832,
    94424.86910134878
   ],
   "end_xy": [
    340355.7276098448,
    94427.76588177116
   ]
  },
  "max_20m": {
   "gradient_pct": 21.267641475813548,
   "start_distance_m": 434.0,
   "end_distance_m": 454.0,
   "midpoint_distance_m": 444.0,
   "start_elevation_m": 177.52033390054928,
   "end_elevation_m": 181.77386219571198,
   "start_xy": [
    340338.49961690814,
    94422.55088391155
   ],
   "end_xy": [
    340357.64299535117,
    94428.34144195793
   ]
  },
  "max_25m": {
   "gradient_pct": 20.352847953673404,
   "start_distance_m": 427.0,
   "end_distance_m": 452.0,
   "midpoint_distance_m": 439.5,
   "start_elevation_m": 176.4028804314588,
   "end_elevation_m": 181.49109241987716,
   "start_xy": [
    340331.78614488075,
    94420.5687363087
   ],
   "end_xy": [
    340355.7276098448,
    94427.76588177116
   ]
  },
  "max_50m": {
   "gradient_pct": 17.181294389179527,
   "start_distance_m": 169.0,
   "end_distance_m": 219.0,
   "midpoint_distance_m": 194.0,
   "start_elevation_m": 153.3048184767246,
   "end_elevation_m": 161.89546567131435,
   "start_xy": [
    340114.01602551,
    94289.22611065213
   ],
   "end_xy": [
    340149.8054411287,
    94324.07270419467
   ]
  },
  "max_100m": {
   "gradient_pct": 16.249483114175916,
   "start_distance_m": 100.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 150.0,
   "start_elevation_m": 142.57053055459932,
   "end_elevation_m": 158.82001366877523,
   "start_xy": [
    340061.4596643887,
    94245.14216889818
   ],
   "end_xy": [
    340135.74161068513,
    94311.30043035469
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.723426585680954,
   "start_distance_m": 269.0,
   "end_distance_m": 274.0,
   "midpoint_distance_m": 271.5,
   "start_elevation_m": 164.24345614997713,
   "end_elevation_m": 164.0072848206931,
   "start_xy": [
    340192.4257682121,
    94350.14653823012
   ],
   "end_xy": [
    340196.5498063667,
    94352.97360485863
   ]
  },
  "min_10m": {
   "gradient_pct": -1.249377563707128,
   "start_distance_m": 264.0,
   "end_distance_m": 274.0,
   "midpoint_distance_m": 269.0,
   "start_elevation_m": 164.1322225770638,
   "end_elevation_m": 164.0072848206931,
   "start_xy": [
    340188.3024898687,
    94347.3183638056
   ],
   "end_xy": [
    340196.5498063667,
    94352.97360485863
   ]
  },
  "min_20m": {
   "gradient_pct": 0.2748359394834665,
   "start_distance_m": 262.0,
   "end_distance_m": 282.0,
   "midpoint_distance_m": 272.0,
   "start_elevation_m": 164.1208951887785,
   "end_elevation_m": 164.17586237667518,
   "start_xy": [
    340186.6528401352,
    94346.18758748655
   ],
   "end_xy": [
    340203.1467391791,
    94357.49913063008
   ]
  },
  "min_25m": {
   "gradient_pct": 1.104062787220414,
   "start_distance_m": 262.0,
   "end_distance_m": 287.0,
   "midpoint_distance_m": 274.5,
   "start_elevation_m": 164.1208951887785,
   "end_elevation_m": 164.3969108855836,
   "start_xy": [
    340186.6528401352,
    94346.18758748655
   ],
   "end_xy": [
    340207.14133879286,
    94360.50574126854
   ]
  },
  "min_50m": {
   "gradient_pct": 2.5180204747770176,
   "start_distance_m": 237.0,
   "end_distance_m": 287.0,
   "midpoint_distance_m": 262.0,
   "start_elevation_m": 163.13790064819509,
   "end_elevation_m": 164.3969108855836,
   "start_xy": [
    340165.4226036734,
    94333.02279726462
   ],
   "end_xy": [
    340207.14133879286,
    94360.50574126854
   ]
  },
  "min_100m": {
   "gradient_pct": 4.149848418617239,
   "start_distance_m": 231.0,
   "end_distance_m": 331.0,
   "midpoint_distance_m": 281.0,
   "start_elevation_m": 162.8567501595968,
   "end_elevation_m": 167.00659857821404,
   "start_xy": [
    340160.2168981086,
    94330.0394064129
   ],
   "end_xy": [
    340244.3094620741,
    94383.82209914601
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.633863956440564,
   "start_distance_m": 120.0,
   "end_distance_m": 122.0,
   "midpoint_distance_m": 121.0,
   "start_elevation_m": 145.98959051672708,
   "end_elevation_m": 146.5622677958559,
   "start_xy": [
    340077.04272467305,
    94257.6788346966
   ],
   "end_xy": [
    340078.67972001125,
    94258.82567112907
   ]
  },
  "max_3m": {
   "gradient_pct": 27.286666440778617,
   "start_distance_m": 121.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 122.5,
   "start_elevation_m": 146.21470935954233,
   "end_elevation_m": 147.03330935276568,
   "start_xy": [
    340077.84111966606,
    94258.28092397856
   ],
   "end_xy": [
    340080.35633114766,
    94259.91607247511
   ]
  }
 },
 "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": 0.052,
   "obstruction_max_height_m": 8.49,
   "flagged_windows_m": []
  },
  "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/SY3590.tif",
   "data/cache/england/bulk_dtm_1m/SY4090.tif"
  ],
  "calculated_at": "2026-08-19T18:40:14+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/england-2026-08-12.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": [
   "SY3590.tif",
   "SY4090.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 13.5% over 200 m (Terrain 50), gain 50.1 m over 434 m way. EXTENDED by graph walk: +2 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. ADOPTED (England launch slice 2026-08-16): clean-steep."
 },
 "area": {
  "place": "Morcombelake",
  "county": "Dorset"
 }
}