{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (51.9009, -4.1402)",
 "slug": "discovered-lane-51-9009-4-1402",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 51.89721350223877,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 761.0,
   "end_distance_m": 763.0,
   "start_elevation_m": 87.16400088475382,
   "end_elevation_m": 88.2019451547986,
   "min_gradient_pct": -53.98129205527553,
   "suppressed_max_gradient_pct": 65.54103617851652,
   "suppressed_location_m": [
    755.0,
    757.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.64337443002231,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 760.0,
   "end_distance_m": 763.0,
   "start_elevation_m": 87.16264392189792,
   "end_elevation_m": 88.2019451547986,
   "min_gradient_pct": -39.67160354239354,
   "suppressed_max_gradient_pct": 48.225716647088746,
   "suppressed_location_m": [
    754.0,
    757.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.73198971358184,
   "diagnostic": false,
   "flags": [
    "placement_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 134.0,
   "end_distance_m": 139.0,
   "start_elevation_m": 38.77152153233488,
   "end_elevation_m": 40.15812101801397,
   "min_gradient_pct": -23.55195722789489,
   "suppressed_max_gradient_pct": 34.03338538577316,
   "suppressed_location_m": [
    717.0,
    722.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.165391718342036,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 127.0,
   "end_distance_m": 137.0,
   "start_elevation_m": 37.28711732516502,
   "end_elevation_m": 39.803656496999224,
   "min_gradient_pct": -10.164270534294388,
   "suppressed_max_gradient_pct": 28.345669556492226,
   "suppressed_location_m": [
    804.0,
    814.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.890425357335154,
   "diagnostic": false,
   "flags": [
    "placement_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 125.0,
   "end_distance_m": 145.0,
   "start_elevation_m": 36.77046014877772,
   "end_elevation_m": 40.94854522024475,
   "min_gradient_pct": -7.50437865728383,
   "suppressed_max_gradient_pct": 25.070626202042092,
   "suppressed_location_m": [
    712.0,
    732.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.841092367020792,
   "diagnostic": false,
   "flags": [
    "placement_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 125.0,
   "end_distance_m": 150.0,
   "start_elevation_m": 36.77046014877772,
   "end_elevation_m": 41.98073324053292,
   "min_gradient_pct": -6.106240873809071,
   "suppressed_max_gradient_pct": 23.198903478680396,
   "suppressed_location_m": [
    711.0,
    736.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.219753249124523,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 125.0,
   "end_distance_m": 175.0,
   "start_elevation_m": 36.77046014877772,
   "end_elevation_m": 46.380336773339984,
   "min_gradient_pct": -3.8405035218609953
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.540029944623562,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 125.0,
   "end_distance_m": 225.0,
   "start_elevation_m": 36.77046014877772,
   "end_elevation_m": 53.310490093401285,
   "min_gradient_pct": -0.6105962282366022
  }
 ],
 "shape": {
  "ascent_concentration": 0.355,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 130.0,
  "shape_class": "sustained"
 },
 "length_m": 1432.264202509383,
 "start_elevation_m": 36.56423154412854,
 "end_elevation_m": 145.87884609747312,
 "endpoint_gain_m": 109.31461455334457,
 "overall_gradient_pct": 7.632293983318236,
 "accumulated_ascent_m": 126.32408408691688,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.73198971358184,
   "start_distance_m": 134.0,
   "end_distance_m": 139.0,
   "midpoint_distance_m": 136.5,
   "start_elevation_m": 38.77152153233488,
   "end_elevation_m": 40.15812101801397,
   "start_xy": [
    252970.03127064832,
    224801.38523566906
   ],
   "end_xy": [
    252965.35555197165,
    224800.5767784874
   ]
  },
  "max_10m": {
   "gradient_pct": 25.165391718342036,
   "start_distance_m": 127.0,
   "end_distance_m": 137.0,
   "midpoint_distance_m": 132.0,
   "start_elevation_m": 37.28711732516502,
   "end_elevation_m": 39.803656496999224,
   "start_xy": [
    252975.90740188776,
    224805.189320506
   ],
   "end_xy": [
    252967.34460175817,
    224800.3677815044
   ]
  },
  "max_20m": {
   "gradient_pct": 20.890425357335154,
   "start_distance_m": 125.0,
   "end_distance_m": 145.0,
   "midpoint_distance_m": 135.0,
   "start_elevation_m": 36.77046014877772,
   "end_elevation_m": 40.94854522024475,
   "start_xy": [
    252977.5862752828,
    224806.27623542125
   ],
   "end_xy": [
    252959.38830188772,
    224801.2028123636
   ]
  },
  "max_25m": {
   "gradient_pct": 20.841092367020792,
   "start_distance_m": 125.0,
   "end_distance_m": 150.0,
   "midpoint_distance_m": 137.5,
   "start_elevation_m": 36.77046014877772,
   "end_elevation_m": 41.98073324053292,
   "start_xy": [
    252977.5862752828,
    224806.27623542125
   ],
   "end_xy": [
    252954.41562122715,
    224801.72477202452
   ]
  },
  "max_50m": {
   "gradient_pct": 19.219753249124523,
   "start_distance_m": 125.0,
   "end_distance_m": 175.0,
   "midpoint_distance_m": 150.0,
   "start_elevation_m": 36.77046014877772,
   "end_elevation_m": 46.380336773339984,
   "start_xy": [
    252977.5862752828,
    224806.27623542125
   ],
   "end_xy": [
    252930.31264900693,
    224800.19298507145
   ]
  },
  "max_100m": {
   "gradient_pct": 16.540029944623562,
   "start_distance_m": 125.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 175.0,
   "start_elevation_m": 36.77046014877772,
   "end_elevation_m": 53.310490093401285,
   "start_xy": [
    252977.5862752828,
    224806.27623542125
   ],
   "end_xy": [
    252904.98401695647,
    224759.75545669853
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -23.55195722789489,
   "start_distance_m": 749.0,
   "end_distance_m": 754.0,
   "midpoint_distance_m": 751.5,
   "start_elevation_m": 86.96756087812228,
   "end_elevation_m": 85.78996301672754,
   "start_xy": [
    252660.21912799316,
    224443.10674294896
   ],
   "end_xy": [
    252661.04010295804,
    224438.19932079822
   ]
  },
  "min_10m": {
   "gradient_pct": -10.164270534294388,
   "start_distance_m": 36.0,
   "end_distance_m": 46.0,
   "midpoint_distance_m": 41.0,
   "start_elevation_m": 36.42258323763427,
   "end_elevation_m": 35.40615618420483,
   "start_xy": [
    253028.1507159315,
    224873.11871643108
   ],
   "end_xy": [
    253025.9916837113,
    224863.3545693794
   ]
  },
  "min_20m": {
   "gradient_pct": -7.50437865728383,
   "start_distance_m": 35.0,
   "end_distance_m": 55.0,
   "midpoint_distance_m": 45.0,
   "start_elevation_m": 36.477800379235134,
   "end_elevation_m": 34.97692464777837,
   "start_xy": [
    253028.36679892326,
    224874.09509143108
   ],
   "end_xy": [
    253024.0487338196,
    224854.56679725894
   ]
  },
  "min_25m": {
   "gradient_pct": -6.106240873809071,
   "start_distance_m": 35.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 47.5,
   "start_elevation_m": 36.477800379235134,
   "end_elevation_m": 34.951240160782866,
   "start_xy": [
    253028.36679892326,
    224874.09509143108
   ],
   "end_xy": [
    253022.96874082673,
    224849.6848289207
   ]
  },
  "min_50m": {
   "gradient_pct": -3.8405035218609953,
   "start_distance_m": 589.0,
   "end_distance_m": 639.0,
   "midpoint_distance_m": 614.0,
   "start_elevation_m": 78.25112935680103,
   "end_elevation_m": 76.33087759587053,
   "start_xy": [
    252688.11474547398,
    224582.56690825522
   ],
   "end_xy": [
    252656.90739754168,
    224544.16138073182
   ]
  },
  "min_100m": {
   "gradient_pct": -0.6105962282366022,
   "start_distance_m": 580.0,
   "end_distance_m": 680.0,
   "midpoint_distance_m": 630.0,
   "start_elevation_m": 78.29970496059354,
   "end_elevation_m": 77.68910873235694,
   "start_xy": [
    252690.90228377428,
    224591.08771644335
   ],
   "end_xy": [
    252640.3985850451,
    224509.19443703583
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 51.89721350223877,
   "start_distance_m": 761.0,
   "end_distance_m": 763.0,
   "midpoint_distance_m": 762.0,
   "start_elevation_m": 87.16400088475382,
   "end_elevation_m": 88.2019451547986,
   "start_xy": [
    252661.45807347097,
    224431.21181126594
   ],
   "end_xy": [
    252661.57809723806,
    224429.21541594053
   ]
  },
  "max_3m": {
   "gradient_pct": 34.64337443002231,
   "start_distance_m": 760.0,
   "end_distance_m": 763.0,
   "midpoint_distance_m": 761.5,
   "start_elevation_m": 87.16264392189792,
   "end_elevation_m": 88.2019451547986,
   "start_xy": [
    252661.39892236926,
    224432.2100602223
   ],
   "end_xy": [
    252661.57809723806,
    224429.21541594053
   ]
  }
 },
 "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": 0.013,
   "windows_resited": [
    2.0,
    3.0
   ],
   "windows_unresolved": []
  },
  "placement_suppression": {
   "masked_fraction": 0.038,
   "windows_resited": [
    5.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.055,
   "windows_resited": [
    3.0,
    5.0,
    10.0,
    20.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 20.0,
     "start_m": 794.0,
     "end_m": 814.0,
     "raw_pct": 23.31,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 804.0,
     "end_m": 814.0,
     "raw_pct": 28.35,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 807.0,
     "end_m": 812.0,
     "raw_pct": 31.15,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.312,
   "obstruction_max_height_m": 27.13,
   "flagged_windows_m": [
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    710.0,
    750.0
   ],
   [
    753.0,
    759.0
   ],
   [
    792.0,
    816.0
   ],
   [
    822.0,
    827.0
   ]
  ],
  "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/wales/dtm_1m/wg_del_18_252224_20211201dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_18_253224_20211201dtm.tif"
  ],
  "calculated_at": "2026-09-12T01:43:09+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-wales/batch-england-rchunk01.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_18_252224_20211201dtm.tif",
   "wg_del_18_253224_20211201dtm.tif"
  ],
  "elevation_capture_dates": [
   "02-12-2021"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Felingwmuchaf",
  "county": "Sir Gaerfyrddin - Carmarthenshire"
 }
}