{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.7397, -4.0338)",
 "slug": "discovered-lane-52-7397-4-0338-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 48.2859433749681,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2000.0,
   "end_distance_m": 2002.0,
   "start_elevation_m": 156.29775943771858,
   "end_elevation_m": 157.26347830521794,
   "min_gradient_pct": -35.21342282524813,
   "suppressed_max_gradient_pct": 61.574435535072425,
   "suppressed_location_m": [
    620.0,
    622.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 42.698234134874724,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1663.0,
   "end_distance_m": 1666.0,
   "start_elevation_m": 137.7595421089218,
   "end_elevation_m": 139.04048913296805,
   "min_gradient_pct": -33.42823178485901,
   "suppressed_max_gradient_pct": 50.57580204417486,
   "suppressed_location_m": [
    620.0,
    623.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 39.21689981594284,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1661.0,
   "end_distance_m": 1666.0,
   "start_elevation_m": 137.0796441421709,
   "end_elevation_m": 139.04048913296805,
   "min_gradient_pct": -25.698266603353943
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 32.08552972020698,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1661.0,
   "end_distance_m": 1671.0,
   "start_elevation_m": 137.0796441421709,
   "end_elevation_m": 140.2881971141916,
   "min_gradient_pct": -17.865588019446363
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.899602706756752,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2321.0,
   "end_distance_m": 2341.0,
   "start_elevation_m": 178.18031764628068,
   "end_elevation_m": 183.36023818763204,
   "min_gradient_pct": -15.823859469772401,
   "suppressed_max_gradient_pct": 26.545909341285427,
   "suppressed_location_m": [
    1428.0,
    1448.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.57495395320575,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2316.0,
   "end_distance_m": 2341.0,
   "start_elevation_m": 177.2164996993306,
   "end_elevation_m": 183.36023818763204,
   "min_gradient_pct": -14.923204432960802
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.215641877399495,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2313.0,
   "end_distance_m": 2363.0,
   "start_elevation_m": 176.71279999487822,
   "end_elevation_m": 188.32062093357797,
   "min_gradient_pct": -12.019069078080406
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.273193404840896,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2294.0,
   "end_distance_m": 2394.0,
   "start_elevation_m": 173.93088509124954,
   "end_elevation_m": 192.20407849609043,
   "min_gradient_pct": -9.624711504727685
  }
 ],
 "shape": {
  "ascent_concentration": 0.376,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 96.0,
  "shape_class": "sustained"
 },
 "length_m": 5075.17809070699,
 "start_elevation_m": 4.729508299362651,
 "end_elevation_m": 262.6718542974845,
 "endpoint_gain_m": 257.9423459981219,
 "overall_gradient_pct": 5.082429451499102,
 "accumulated_ascent_m": 326.2792652054543,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 39.21689981594284,
   "start_distance_m": 1661.0,
   "end_distance_m": 1666.0,
   "midpoint_distance_m": 1663.5,
   "start_elevation_m": 137.0796441421709,
   "end_elevation_m": 139.04048913296805,
   "start_xy": [
    262527.299078274,
    316696.7492707455
   ],
   "end_xy": [
    262529.33904461487,
    316701.31419542484
   ]
  },
  "max_10m": {
   "gradient_pct": 32.08552972020698,
   "start_distance_m": 1661.0,
   "end_distance_m": 1671.0,
   "midpoint_distance_m": 1666.0,
   "start_elevation_m": 137.0796441421709,
   "end_elevation_m": 140.2881971141916,
   "start_xy": [
    262527.299078274,
    316696.7492707455
   ],
   "end_xy": [
    262531.3790109557,
    316705.87912010425
   ]
  },
  "max_20m": {
   "gradient_pct": 25.899602706756752,
   "start_distance_m": 2321.0,
   "end_distance_m": 2341.0,
   "midpoint_distance_m": 2331.0,
   "start_elevation_m": 178.18031764628068,
   "end_elevation_m": 183.36023818763204,
   "start_xy": [
    262840.14303184627,
    317263.1133006596
   ],
   "end_xy": [
    262835.69113367575,
    317282.49160455883
   ]
  },
  "max_25m": {
   "gradient_pct": 24.57495395320575,
   "start_distance_m": 2316.0,
   "end_distance_m": 2341.0,
   "midpoint_distance_m": 2328.5,
   "start_elevation_m": 177.2164996993306,
   "end_elevation_m": 183.36023818763204,
   "start_xy": [
    262842.01222126523,
    317258.47583065735
   ],
   "end_xy": [
    262835.69113367575,
    317282.49160455883
   ]
  },
  "max_50m": {
   "gradient_pct": 23.215641877399495,
   "start_distance_m": 2313.0,
   "end_distance_m": 2363.0,
   "midpoint_distance_m": 2338.0,
   "start_elevation_m": 176.71279999487822,
   "end_elevation_m": 188.32062093357797,
   "start_xy": [
    262843.13419083855,
    317255.69353233324
   ],
   "end_xy": [
    262832.5041430593,
    317304.25954049156
   ]
  },
  "max_100m": {
   "gradient_pct": 18.273193404840896,
   "start_distance_m": 2294.0,
   "end_distance_m": 2394.0,
   "midpoint_distance_m": 2344.0,
   "start_elevation_m": 173.93088509124954,
   "end_elevation_m": 192.20407849609043,
   "start_xy": [
    262843.8945608813,
    317236.9662823625
   ],
   "end_xy": [
    262826.74865060986,
    317334.711935115
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -25.698266603353943,
   "start_distance_m": 1458.0,
   "end_distance_m": 1463.0,
   "midpoint_distance_m": 1460.5,
   "start_elevation_m": 121.55695331163459,
   "end_elevation_m": 120.27203998146689,
   "start_xy": [
    262446.2653028462,
    316511.4022190031
   ],
   "end_xy": [
    262448.63633832854,
    316515.80428495246
   ]
  },
  "min_10m": {
   "gradient_pct": -17.865588019446363,
   "start_distance_m": 1457.0,
   "end_distance_m": 1467.0,
   "midpoint_distance_m": 1462.0,
   "start_elevation_m": 121.67770145584103,
   "end_elevation_m": 119.8911426538964,
   "start_xy": [
    262445.79121699295,
    316510.52174040885
   ],
   "end_xy": [
    262450.5332880203,
    316519.3258722739
   ]
  },
  "min_20m": {
   "gradient_pct": -15.823859469772401,
   "start_distance_m": 2722.0,
   "end_distance_m": 2742.0,
   "midpoint_distance_m": 2732.0,
   "start_elevation_m": 204.96094602072347,
   "end_elevation_m": 201.796174126769,
   "start_xy": [
    262776.16167791863,
    317648.43237061397
   ],
   "end_xy": [
    262781.6939810497,
    317667.64133748447
   ]
  },
  "min_25m": {
   "gradient_pct": -14.923204432960802,
   "start_distance_m": 2720.0,
   "end_distance_m": 2745.0,
   "midpoint_distance_m": 2732.5,
   "start_elevation_m": 205.13915684206415,
   "end_elevation_m": 201.40835573382395,
   "start_xy": [
    262776.0718574172,
    317646.4353592132
   ],
   "end_xy": [
    262782.5459880481,
    317670.51780823275
   ]
  },
  "min_50m": {
   "gradient_pct": -12.019069078080406,
   "start_distance_m": 2711.0,
   "end_distance_m": 2761.0,
   "midpoint_distance_m": 2736.0,
   "start_elevation_m": 205.8995481407631,
   "end_elevation_m": 199.8900136017229,
   "start_xy": [
    262776.1542054285,
    317637.4574695173
   ],
   "end_xy": [
    262785.554857434,
    317686.18473787705
   ]
  },
  "min_100m": {
   "gradient_pct": -9.624711504727685,
   "start_distance_m": 2703.0,
   "end_distance_m": 2803.0,
   "midpoint_distance_m": 2753.0,
   "start_elevation_m": 206.32398941100914,
   "end_elevation_m": 196.69927790628145,
   "start_xy": [
    262778.0726369794,
    317629.7120842052
   ],
   "end_xy": [
    262791.5685812049,
    317727.71706362546
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 48.2859433749681,
   "start_distance_m": 2000.0,
   "end_distance_m": 2002.0,
   "midpoint_distance_m": 2001.0,
   "start_elevation_m": 156.29775943771858,
   "end_elevation_m": 157.26347830521794,
   "start_xy": [
    262691.9413229216,
    316992.2454365108
   ],
   "end_xy": [
    262692.7644861538,
    316994.06311554776
   ]
  },
  "max_3m": {
   "gradient_pct": 42.698234134874724,
   "start_distance_m": 1663.0,
   "end_distance_m": 1666.0,
   "midpoint_distance_m": 1664.5,
   "start_elevation_m": 137.7595421089218,
   "end_elevation_m": 139.04048913296805,
   "start_xy": [
    262528.1150648103,
    316698.57524061727
   ],
   "end_xy": [
    262529.33904461487,
    316701.31419542484
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.001,
   "windows_resited": [
    2.0,
    3.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.041,
   "windows_resited": [
    20.0
   ],
   "windows_unresolved": []
  },
  "placement_suppression": {
   "masked_fraction": 0.056,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.272,
   "obstruction_max_height_m": 26.69,
   "flagged_windows_m": [
    2,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    619.0,
    624.0
   ],
   [
    720.0,
    760.0
   ],
   [
    860.0,
    910.0
   ],
   [
    1300.0,
    1350.0
   ],
   [
    1410.0,
    1470.0
   ],
   [
    1830.0,
    1870.0
   ],
   [
    1920.0,
    1950.0
   ]
  ],
  "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/wales/dtm_1m/wg_del_22_261317_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_261318_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_261319_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_262317_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_262318_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_262319_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_263318_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_22_263319_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_34_261315_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_34_261316_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_34_262315_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_34_262316_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_34_263315_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_34_263316_20220114dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_34_263317_20220114dtm.tif"
  ],
  "calculated_at": "2026-09-12T01:42:47+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-wales/batch-england-rchunk04.pbf",
  "osm_snapshot": "",
  "run_id": "texture-uk-wales-260912",
  "elevation_provider": "Welsh Government",
  "elevation_dataset": "Welsh Government LiDAR 1m DTM (2020-2023)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Crown copyright Welsh Government",
  "elevation_catalogue_layer": "geonode:welsh_government_lidar_tile_catalogue_2020_2023",
  "elevation_tile_ids": [
   "wg_del_22_261317_20220114dtm.tif",
   "wg_del_22_261318_20220114dtm.tif",
   "wg_del_22_261319_20220114dtm.tif",
   "wg_del_22_262317_20220114dtm.tif",
   "wg_del_22_262318_20220114dtm.tif",
   "wg_del_22_262319_20220114dtm.tif",
   "wg_del_22_263318_20220114dtm.tif",
   "wg_del_22_263319_20220114dtm.tif",
   "wg_del_34_261315_20220114dtm.tif",
   "wg_del_34_261316_20220114dtm.tif",
   "wg_del_34_262315_20220114dtm.tif",
   "wg_del_34_262316_20220114dtm.tif",
   "wg_del_34_263315_20220114dtm.tif",
   "wg_del_34_263316_20220114dtm.tif",
   "wg_del_34_263317_20220114dtm.tif"
  ],
  "elevation_capture_dates": [
   "14-01-2022"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Abermaw",
  "county": "Gwynedd - Gwynedd"
 }
}