{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (51.1129, -3.9428)",
 "slug": "discovered-lane-51-1129-3-9428",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 36.155166027488406,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 102.0,
   "end_distance_m": 104.0,
   "start_elevation_m": 144.02923045199395,
   "end_elevation_m": 144.75233377254372,
   "min_gradient_pct": -14.183136170571231
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.116614906100306,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 101.0,
   "end_distance_m": 104.0,
   "start_elevation_m": 143.9088353253607,
   "end_elevation_m": 144.75233377254372,
   "min_gradient_pct": -10.174958917562549
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.3421576889408,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 151.0,
   "end_distance_m": 156.0,
   "start_elevation_m": 153.24328184002772,
   "end_elevation_m": 154.56038972447476,
   "min_gradient_pct": -6.916906198172796
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.81190484684646,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 151.0,
   "end_distance_m": 161.0,
   "start_elevation_m": 153.24328184002772,
   "end_elevation_m": 155.72447232471237,
   "min_gradient_pct": -6.154951807512532
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.64930232881511,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 143.0,
   "end_distance_m": 163.0,
   "start_elevation_m": 151.5797245130828,
   "end_elevation_m": 156.10958497884582,
   "min_gradient_pct": -5.868606687905071
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.197121316650396,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 140.0,
   "end_distance_m": 165.0,
   "start_elevation_m": 151.00202556280084,
   "end_elevation_m": 156.55130589196344,
   "min_gradient_pct": -5.019205830436249
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.709259653062364,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 126.0,
   "end_distance_m": 176.0,
   "start_elevation_m": 148.33266484736194,
   "end_elevation_m": 158.68729467389312,
   "min_gradient_pct": -0.17306534717931754
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.00808145771566,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 59.0,
   "end_distance_m": 159.0,
   "start_elevation_m": 136.3047574942912,
   "end_elevation_m": 155.31283895200687,
   "min_gradient_pct": 9.23221242797149
  }
 ],
 "shape": {
  "ascent_concentration": 0.35,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 393.0,
  "shape_class": "sustained"
 },
 "length_m": 438.105749949572,
 "start_elevation_m": 134.64932164526354,
 "end_elevation_m": 193.34348606518392,
 "endpoint_gain_m": 58.694164419920384,
 "overall_gradient_pct": 13.39725954901901,
 "accumulated_ascent_m": 60.30280357283158,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.3421576889408,
   "start_distance_m": 151.0,
   "end_distance_m": 156.0,
   "midpoint_distance_m": 153.5,
   "start_elevation_m": 153.24328184002772,
   "end_elevation_m": 154.56038972447476,
   "start_xy": [
    264207.7076377429,
    136623.57213191278
   ],
   "end_xy": [
    264211.5801203693,
    136626.7350227279
   ]
  },
  "max_10m": {
   "gradient_pct": 24.81190484684646,
   "start_distance_m": 151.0,
   "end_distance_m": 161.0,
   "midpoint_distance_m": 156.0,
   "start_elevation_m": 153.24328184002772,
   "end_elevation_m": 155.72447232471237,
   "start_xy": [
    264207.7076377429,
    136623.57213191278
   ],
   "end_xy": [
    264215.4526029957,
    136629.897913543
   ]
  },
  "max_20m": {
   "gradient_pct": 22.64930232881511,
   "start_distance_m": 143.0,
   "end_distance_m": 163.0,
   "midpoint_distance_m": 153.0,
   "start_elevation_m": 151.5797245130828,
   "end_elevation_m": 156.10958497884582,
   "start_xy": [
    264200.1873513366,
    136621.44391124079
   ],
   "end_xy": [
    264217.0015960462,
    136631.16306986907
   ]
  },
  "max_25m": {
   "gradient_pct": 22.197121316650396,
   "start_distance_m": 140.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 152.5,
   "start_elevation_m": 151.00202556280084,
   "end_elevation_m": 156.55130589196344,
   "start_xy": [
    264197.2273666497,
    136620.95555619212
   ],
   "end_xy": [
    264218.5505890968,
    136632.42822619513
   ]
  },
  "max_50m": {
   "gradient_pct": 20.709259653062364,
   "start_distance_m": 126.0,
   "end_distance_m": 176.0,
   "midpoint_distance_m": 151.0,
   "start_elevation_m": 148.33266484736194,
   "end_elevation_m": 158.68729467389312,
   "start_xy": [
    264183.6391462259,
    136624.22287435448
   ],
   "end_xy": [
    264227.07005087484,
    136639.38658598837
   ]
  },
  "max_100m": {
   "gradient_pct": 19.00808145771566,
   "start_distance_m": 59.0,
   "end_distance_m": 159.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 136.3047574942912,
   "end_elevation_m": 155.31283895200687,
   "start_xy": [
    264118.04231402586,
    136637.0820492441
   ],
   "end_xy": [
    264213.90360994515,
    136628.63275721698
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.916906198172796,
   "start_distance_m": 24.0,
   "end_distance_m": 29.0,
   "midpoint_distance_m": 26.5,
   "start_elevation_m": 134.11021682333654,
   "end_elevation_m": 133.7643715134279,
   "start_xy": [
    264100.41865944123,
    136657.91304593757
   ],
   "end_xy": [
    264100.5605649808,
    136652.91506006147
   ]
  },
  "min_10m": {
   "gradient_pct": -6.154951807512532,
   "start_distance_m": 25.0,
   "end_distance_m": 35.0,
   "midpoint_distance_m": 30.0,
   "start_elevation_m": 134.06132390945476,
   "end_elevation_m": 133.4458287287035,
   "start_xy": [
    264100.44704054913,
    136656.91344876235
   ],
   "end_xy": [
    264100.7308516283,
    136646.9174770101
   ]
  },
  "min_20m": {
   "gradient_pct": -5.868606687905071,
   "start_distance_m": 15.0,
   "end_distance_m": 35.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 134.61955006628452,
   "end_elevation_m": 133.4458287287035,
   "start_xy": [
    264100.16322946997,
    136666.90942051457
   ],
   "end_xy": [
    264100.7308516283,
    136646.9174770101
   ]
  },
  "min_25m": {
   "gradient_pct": -5.019205830436249,
   "start_distance_m": 11.0,
   "end_distance_m": 36.0,
   "midpoint_distance_m": 23.5,
   "start_elevation_m": 134.6736343326378,
   "end_elevation_m": 133.41883287502873,
   "start_xy": [
    264099.35425367823,
    136670.79936941233
   ],
   "end_xy": [
    264100.7592327362,
    136645.9178798349
   ]
  },
  "min_50m": {
   "gradient_pct": -0.17306534717931754,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 134.64932164526354,
   "end_elevation_m": 134.56278897167388,
   "start_xy": [
    264096.304,
    136681.368
   ],
   "end_xy": [
    264109.09011989983,
    136638.00845106246
   ]
  },
  "min_100m": {
   "gradient_pct": 9.23221242797149,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 134.64932164526354,
   "end_elevation_m": 143.88153407323503,
   "start_xy": [
    264096.304,
    136681.368
   ],
   "end_xy": [
    264158.41316962644,
    136630.5197072571
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 36.155166027488406,
   "start_distance_m": 102.0,
   "end_distance_m": 104.0,
   "midpoint_distance_m": 103.0,
   "start_elevation_m": 144.02923045199395,
   "end_elevation_m": 144.75233377254372,
   "start_xy": [
    264160.35362936486,
    136630.03533549537
   ],
   "end_xy": [
    264162.2940891033,
    136629.55096373364
   ]
  },
  "max_3m": {
   "gradient_pct": 28.116614906100306,
   "start_distance_m": 101.0,
   "end_distance_m": 104.0,
   "midpoint_distance_m": 102.5,
   "start_elevation_m": 143.9088353253607,
   "end_elevation_m": 144.75233377254372,
   "start_xy": [
    264159.3833994957,
    136630.27752137624
   ],
   "end_xy": [
    264162.2940891033,
    136629.55096373364
   ]
  }
 },
 "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": 0.023,
   "obstruction_max_height_m": 4.49,
   "flagged_windows_m": []
  },
  "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/SS6035.tif"
  ],
  "calculated_at": "2026-09-05T00:05:57+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "/root/uk-climbs/data/cache/pbf/england-2026-08-27.osm.pbf",
  "osm_snapshot": "2026-08-26T20:22:15Z",
  "run_id": "hunt-england-260905",
  "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": [
   "SS6035.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Bratton Fleming",
  "county": "Devon"
 }
}