{
 "ocl_version": "0.1.0",
 "name": "Lane near Winsley Hill",
 "slug": "discovered-lane-54-4674-0-9200",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.48603387662729,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 496.0,
   "end_distance_m": 498.0,
   "start_elevation_m": 163.46852631030822,
   "end_elevation_m": 163.95824698784077,
   "min_gradient_pct": -6.88531711237772
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.708928886527286,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 496.0,
   "end_distance_m": 499.0,
   "start_elevation_m": 163.46852631030822,
   "end_elevation_m": 164.17979417690404,
   "min_gradient_pct": -4.4273675911085775
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.337169867662624,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 496.0,
   "end_distance_m": 501.0,
   "start_elevation_m": 163.46852631030822,
   "end_elevation_m": 164.63538480369135,
   "min_gradient_pct": -2.647229944163314
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.269511483758038,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 427.0,
   "end_distance_m": 437.0,
   "start_elevation_m": 150.85641006293417,
   "end_elevation_m": 153.08336121130998,
   "min_gradient_pct": -0.8043150503999641
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.361982276535656,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 426.0,
   "end_distance_m": 446.0,
   "start_elevation_m": 150.6582288916182,
   "end_elevation_m": 154.93062534692532,
   "min_gradient_pct": 0.15692745139489261
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.022141874139038,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 422.0,
   "end_distance_m": 447.0,
   "start_elevation_m": 149.86643762520868,
   "end_elevation_m": 155.12197309374343,
   "min_gradient_pct": 0.2169328902828056
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.76075207904961,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 418.0,
   "end_distance_m": 468.0,
   "start_elevation_m": 149.11350508200388,
   "end_elevation_m": 158.4938811215287,
   "min_gradient_pct": 1.0594485660705004
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.443431194142278,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 417.0,
   "end_distance_m": 517.0,
   "start_elevation_m": 148.9492519578953,
   "end_elevation_m": 167.3926831520376,
   "min_gradient_pct": 1.5121491876533923
  }
 ],
 "shape": {
  "ascent_concentration": 0.585,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 164.0,
  "shape_class": "stepped"
 },
 "length_m": 592.6138300024953,
 "start_elevation_m": 134.50752350122136,
 "end_elevation_m": 175.02912593124444,
 "endpoint_gain_m": 40.52160243002308,
 "overall_gradient_pct": 6.837775356989637,
 "accumulated_ascent_m": 42.25668167407872,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.337169867662624,
   "start_distance_m": 496.0,
   "end_distance_m": 501.0,
   "midpoint_distance_m": 498.5,
   "start_elevation_m": 163.46852631030822,
   "end_elevation_m": 164.63538480369135,
   "start_xy": [
    470142.6437105899,
    508539.47810839454
   ],
   "end_xy": [
    470139.3574233498,
    508543.24643804296
   ]
  },
  "max_10m": {
   "gradient_pct": 22.269511483758038,
   "start_distance_m": 427.0,
   "end_distance_m": 437.0,
   "midpoint_distance_m": 432.0,
   "start_elevation_m": 150.85641006293417,
   "end_elevation_m": 153.08336121130998,
   "start_xy": [
    470159.06940125674,
    508473.9219543349
   ],
   "end_xy": [
    470156.702837618,
    508483.41598482145
   ]
  },
  "max_20m": {
   "gradient_pct": 21.361982276535656,
   "start_distance_m": 426.0,
   "end_distance_m": 446.0,
   "midpoint_distance_m": 436.0,
   "start_elevation_m": 150.6582288916182,
   "end_elevation_m": 154.93062534692532,
   "start_xy": [
    470159.71233535936,
    508473.1560328378
   ],
   "end_xy": [
    470155.4658522931,
    508492.3305710201
   ]
  },
  "max_25m": {
   "gradient_pct": 21.022141874139038,
   "start_distance_m": 422.0,
   "end_distance_m": 447.0,
   "midpoint_distance_m": 434.5,
   "start_elevation_m": 149.86643762520868,
   "end_elevation_m": 155.12197309374343,
   "start_xy": [
    470162.2840717699,
    508470.09234684956
   ],
   "end_xy": [
    470155.32851449127,
    508493.3210952112
   ]
  },
  "max_50m": {
   "gradient_pct": 18.76075207904961,
   "start_distance_m": 418.0,
   "end_distance_m": 468.0,
   "midpoint_distance_m": 443.0,
   "start_elevation_m": 149.11350508200388,
   "end_elevation_m": 158.4938811215287,
   "start_xy": [
    470164.855221356,
    508467.028168649
   ],
   "end_xy": [
    470153.334499359,
    508514.199533538
   ]
  },
  "max_100m": {
   "gradient_pct": 18.443431194142278,
   "start_distance_m": 417.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 467.0,
   "start_elevation_m": 148.9492519578953,
   "end_elevation_m": 167.3926831520376,
   "start_xy": [
    470165.49815545866,
    508466.2622471519
   ],
   "end_xy": [
    470124.4009649162,
    508547.06669486064
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.647229944163314,
   "start_distance_m": 582.0,
   "end_distance_m": 587.0,
   "midpoint_distance_m": 584.5,
   "start_elevation_m": 174.98186453989902,
   "end_elevation_m": 174.84950304269086,
   "start_xy": [
    470083.0878481266,
    508566.9051351181
   ],
   "end_xy": [
    470087.2799746472,
    508569.63021740183
   ]
  },
  "min_10m": {
   "gradient_pct": -0.8043150503999641,
   "start_distance_m": 66.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 71.0,
   "start_elevation_m": 136.47077184123637,
   "end_elevation_m": 136.39034033619637,
   "start_xy": [
    469867.6035439966,
    508330.8674356177
   ],
   "end_xy": [
    469877.315085419,
    508328.4829563135
   ]
  },
  "min_20m": {
   "gradient_pct": 0.15692745139489261,
   "start_distance_m": 134.0,
   "end_distance_m": 154.0,
   "midpoint_distance_m": 144.0,
   "start_elevation_m": 137.7172559241879,
   "end_elevation_m": 137.74864141446687,
   "start_xy": [
    469935.14756096515,
    508324.9244959022
   ],
   "end_xy": [
    469955.10737764766,
    508325.8268906204
   ]
  },
  "min_25m": {
   "gradient_pct": 0.2169328902828056,
   "start_distance_m": 125.0,
   "end_distance_m": 150.0,
   "midpoint_distance_m": 137.5,
   "start_elevation_m": 137.66281074318036,
   "end_elevation_m": 137.71704396575106,
   "start_xy": [
    469926.15088885586,
    508324.88926815824
   ],
   "end_xy": [
    469951.1431892036,
    508325.2928437579
   ]
  },
  "min_50m": {
   "gradient_pct": 1.0594485660705004,
   "start_distance_m": 111.0,
   "end_distance_m": 161.0,
   "midpoint_distance_m": 136.0,
   "start_elevation_m": 137.4224320131891,
   "end_elevation_m": 137.95215629622436,
   "start_xy": [
    469912.1594313195,
    508325.378249153
   ],
   "end_xy": [
    469962.044646224,
    508326.76192693645
   ]
  },
  "min_100m": {
   "gradient_pct": 1.5121491876533923,
   "start_distance_m": 54.0,
   "end_distance_m": 154.0,
   "midpoint_distance_m": 104.0,
   "start_elevation_m": 136.23649222681348,
   "end_elevation_m": 137.74864141446687,
   "start_xy": [
    469855.94936005626,
    508333.72749980085
   ],
   "end_xy": [
    469955.10737764766,
    508325.8268906204
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.48603387662729,
   "start_distance_m": 496.0,
   "end_distance_m": 498.0,
   "midpoint_distance_m": 497.0,
   "start_elevation_m": 163.46852631030822,
   "end_elevation_m": 163.95824698784077,
   "start_xy": [
    470142.6437105899,
    508539.47810839454
   ],
   "end_xy": [
    470141.32875591685,
    508540.98505637544
   ]
  },
  "max_3m": {
   "gradient_pct": 23.708928886527286,
   "start_distance_m": 496.0,
   "end_distance_m": 499.0,
   "midpoint_distance_m": 497.5,
   "start_elevation_m": 163.46852631030822,
   "end_elevation_m": 164.17979417690404,
   "start_xy": [
    470142.6437105899,
    508539.47810839454
   ],
   "end_xy": [
    470140.67181011266,
    508541.73899417813
   ]
  }
 },
 "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": 0.02,
   "obstruction_max_height_m": 9.47,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": []
 },
 "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/NZ6505.tif",
   "data/cache/england/bulk_dtm_1m/NZ7005.tif"
  ],
  "calculated_at": "2026-08-19T18:31:38+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": [
   "NZ6505.tif",
   "NZ7005.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 11.2% over 200 m (Terrain 50), gain 22.5 m over 164 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. AUTO-NAMED from gazetteer (hypothesis, unreviewed): was 'Discovered lane (54.4674, -0.9200)'.",
  "naming_note": "auto-named from gazetteer (hypothesis, unreviewed); discovered as 'Discovered lane (54.4674, -0.9200)'"
 },
 "area": {
  "place": "Ainthorpe",
  "county": "North Yorkshire"
 }
}