{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.0464, -4.0305)",
 "slug": "discovered-lane-52-0464-4-0305",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 44.987525221003466,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1217.0,
   "end_distance_m": 1219.0,
   "start_elevation_m": 258.0751850567213,
   "end_elevation_m": 258.97493556114136,
   "min_gradient_pct": -65.23124760259549,
   "suppressed_max_gradient_pct": 81.47627008246019,
   "suppressed_location_m": [
    612.0,
    614.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 42.54552391400163,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 902.0,
   "end_distance_m": 905.0,
   "start_elevation_m": 216.10480912418188,
   "end_elevation_m": 217.38117484160193,
   "min_gradient_pct": -58.96929348780304,
   "suppressed_max_gradient_pct": 58.906585398300614,
   "suppressed_location_m": [
    611.0,
    614.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.4495239230605,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 901.0,
   "end_distance_m": 906.0,
   "start_elevation_m": 215.83865305375394,
   "end_elevation_m": 217.56112924990697,
   "min_gradient_pct": -41.24711849154323,
   "suppressed_max_gradient_pct": 38.52152741321049,
   "suppressed_location_m": [
    611.0,
    616.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.5301369556434,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 887.0,
   "end_distance_m": 897.0,
   "start_elevation_m": 212.55560457800667,
   "end_elevation_m": 215.208618273571,
   "min_gradient_pct": -21.376259941665694
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.900021633374877,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 885.0,
   "end_distance_m": 905.0,
   "start_elevation_m": 212.20117051492696,
   "end_elevation_m": 217.38117484160193,
   "min_gradient_pct": -19.34315619068002
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.97544129222888,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 880.0,
   "end_distance_m": 905.0,
   "start_elevation_m": 211.1373145185447,
   "end_elevation_m": 217.38117484160193,
   "min_gradient_pct": -18.991892207119918
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.092034777275217,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 856.0,
   "end_distance_m": 906.0,
   "start_elevation_m": 206.51511186126936,
   "end_elevation_m": 217.56112924990697,
   "min_gradient_pct": -16.676771164324975
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.666143265742733,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 815.0,
   "end_distance_m": 915.0,
   "start_elevation_m": 201.3764421322806,
   "end_elevation_m": 219.04258539802333,
   "min_gradient_pct": -14.936732475910901
  }
 ],
 "shape": {
  "ascent_concentration": 0.502,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 158.0,
  "shape_class": "stepped"
 },
 "length_m": 6281.288424139395,
 "start_elevation_m": 181.47996800654585,
 "end_elevation_m": 341.0207257705071,
 "endpoint_gain_m": 159.54075776396127,
 "overall_gradient_pct": 2.539936824916937,
 "accumulated_ascent_m": 321.77369102420073,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.4495239230605,
   "start_distance_m": 901.0,
   "end_distance_m": 906.0,
   "midpoint_distance_m": 903.5,
   "start_elevation_m": 215.83865305375394,
   "end_elevation_m": 217.56112924990697,
   "start_xy": [
    260604.4731638077,
    240804.77212410362
   ],
   "end_xy": [
    260600.95237307518,
    240808.28037219806
   ]
  },
  "max_10m": {
   "gradient_pct": 26.5301369556434,
   "start_distance_m": 887.0,
   "end_distance_m": 897.0,
   "midpoint_distance_m": 892.0,
   "start_elevation_m": 212.55560457800667,
   "end_elevation_m": 215.208618273571,
   "start_xy": [
    260616.52834145667,
    240797.67873127083
   ],
   "end_xy": [
    260607.98364898897,
    240802.85470558066
   ]
  },
  "max_20m": {
   "gradient_pct": 25.900021633374877,
   "start_distance_m": 885.0,
   "end_distance_m": 905.0,
   "midpoint_distance_m": 895.0,
   "start_elevation_m": 212.20117051492696,
   "end_elevation_m": 217.38117484160193,
   "start_xy": [
    260618.25288303112,
    240796.7360932327
   ],
   "end_xy": [
    260601.63067879216,
    240807.54559239818
   ]
  },
  "max_25m": {
   "gradient_pct": 24.97544129222888,
   "start_distance_m": 880.0,
   "end_distance_m": 905.0,
   "midpoint_distance_m": 892.5,
   "start_elevation_m": 211.1373145185447,
   "end_elevation_m": 217.38117484160193,
   "start_xy": [
    260623.2220953387,
    240796.1820814616
   ],
   "end_xy": [
    260601.63067879216,
    240807.54559239818
   ]
  },
  "max_50m": {
   "gradient_pct": 22.092034777275217,
   "start_distance_m": 856.0,
   "end_distance_m": 906.0,
   "midpoint_distance_m": 881.0,
   "start_elevation_m": 206.51511186126936,
   "end_elevation_m": 217.56112924990697,
   "start_xy": [
    260646.665960428,
    240800.09062939268
   ],
   "end_xy": [
    260600.95237307518,
    240808.28037219806
   ]
  },
  "max_100m": {
   "gradient_pct": 17.666143265742733,
   "start_distance_m": 815.0,
   "end_distance_m": 915.0,
   "midpoint_distance_m": 865.0,
   "start_elevation_m": 201.3764421322806,
   "end_elevation_m": 219.04258539802333,
   "start_xy": [
    260680.18339434982,
    240779.24450971076
   ],
   "end_xy": [
    260595.2739957151,
    240815.19437093832
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -41.24711849154323,
   "start_distance_m": 604.0,
   "end_distance_m": 609.0,
   "midpoint_distance_m": 606.5,
   "start_elevation_m": 178.61700886940991,
   "end_elevation_m": 176.55465294483275,
   "start_xy": [
    260828.08897231877,
    240644.20937732267
   ],
   "end_xy": [
    260824.04615060726,
    240647.14190258327
   ]
  },
  "min_10m": {
   "gradient_pct": -21.376259941665694,
   "start_distance_m": 601.0,
   "end_distance_m": 611.0,
   "midpoint_distance_m": 606.0,
   "start_elevation_m": 178.67356183178276,
   "end_elevation_m": 176.5359358376162,
   "start_xy": [
    260830.41287308917,
    240642.31214639064
   ],
   "end_xy": [
    260822.38246609134,
    240648.25192683144
   ]
  },
  "min_20m": {
   "gradient_pct": -19.34315619068002,
   "start_distance_m": 345.0,
   "end_distance_m": 365.0,
   "midpoint_distance_m": 355.0,
   "start_elevation_m": 210.21057317697532,
   "end_elevation_m": 206.3419419388393,
   "start_xy": [
    261061.70215147018,
    240625.96934134056
   ],
   "end_xy": [
    261045.3063477832,
    240630.60164080674
   ]
  },
  "min_25m": {
   "gradient_pct": -18.991892207119918,
   "start_distance_m": 343.0,
   "end_distance_m": 368.0,
   "midpoint_distance_m": 355.5,
   "start_elevation_m": 210.56385924239646,
   "end_elevation_m": 205.81588619061648,
   "start_xy": [
    261062.47597651798,
    240624.12510849317
   ],
   "end_xy": [
    261042.48570234416,
    240629.579897538
   ]
  },
  "min_50m": {
   "gradient_pct": -16.676771164324975,
   "start_distance_m": 340.0,
   "end_distance_m": 390.0,
   "midpoint_distance_m": 365.0,
   "start_elevation_m": 211.0469633165689,
   "end_elevation_m": 202.70857773440642,
   "start_xy": [
    261063.6367140897,
    240621.3587592221
   ],
   "end_xy": [
    261021.26674181782,
    240624.8719495675
   ]
  },
  "min_100m": {
   "gradient_pct": -14.936732475910901,
   "start_distance_m": 340.0,
   "end_distance_m": 440.0,
   "midpoint_distance_m": 390.0,
   "start_elevation_m": 211.0469633165689,
   "end_elevation_m": 196.110230840658,
   "start_xy": [
    261063.6367140897,
    240621.3587592221
   ],
   "end_xy": [
    260971.987273393,
    240617.0954310277
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 44.987525221003466,
   "start_distance_m": 1217.0,
   "end_distance_m": 1219.0,
   "midpoint_distance_m": 1218.0,
   "start_elevation_m": 258.0751850567213,
   "end_elevation_m": 258.97493556114136,
   "start_xy": [
    260366.7074315274,
    240980.51559396018
   ],
   "end_xy": [
    260365.17583049336,
    240981.80175035525
   ]
  },
  "max_3m": {
   "gradient_pct": 42.54552391400163,
   "start_distance_m": 902.0,
   "end_distance_m": 905.0,
   "midpoint_distance_m": 903.5,
   "start_elevation_m": 216.10480912418188,
   "end_elevation_m": 217.38117484160193,
   "start_xy": [
    260603.66559594302,
    240805.34125299848
   ],
   "end_xy": [
    260601.63067879216,
    240807.54559239818
   ]
  }
 },
 "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": 0.004,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.048,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.359,
   "obstruction_max_height_m": 23.87,
   "flagged_windows_m": [
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    604.0,
    616.0
   ],
   [
    1007.0,
    1012.0
   ],
   [
    4150.0,
    4240.0
   ],
   [
    4260.0,
    4290.0
   ],
   [
    4870.0,
    4930.0
   ],
   [
    5170.0,
    5220.0
   ],
   [
    5240.0,
    5245.0
   ],
   [
    5300.0,
    5340.0
   ]
  ],
  "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_28_256240_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_256241_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_256242_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_257240_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_257241_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_257242_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_258240_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_258241_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_258242_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_259240_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_259241_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_259242_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_260240_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_260241_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_260242_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_261240_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_261241_20220314dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_28_261242_20220314dtm.tif"
  ],
  "calculated_at": "2026-09-04T22:07:15+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/wales-2026-08-11.osm.pbf",
  "osm_snapshot": "2026-08-10T20:21:40Z",
  "run_id": "hunt-wales-260905",
  "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_28_256240_20220314dtm.tif",
   "wg_del_28_256241_20220314dtm.tif",
   "wg_del_28_256242_20220314dtm.tif",
   "wg_del_28_257240_20220314dtm.tif",
   "wg_del_28_257241_20220314dtm.tif",
   "wg_del_28_257242_20220314dtm.tif",
   "wg_del_28_258240_20220314dtm.tif",
   "wg_del_28_258241_20220314dtm.tif",
   "wg_del_28_258242_20220314dtm.tif",
   "wg_del_28_259240_20220314dtm.tif",
   "wg_del_28_259241_20220314dtm.tif",
   "wg_del_28_259242_20220314dtm.tif",
   "wg_del_28_260240_20220314dtm.tif",
   "wg_del_28_260241_20220314dtm.tif",
   "wg_del_28_260242_20220314dtm.tif",
   "wg_del_28_261240_20220314dtm.tif",
   "wg_del_28_261241_20220314dtm.tif",
   "wg_del_28_261242_20220314dtm.tif"
  ],
  "elevation_capture_dates": [
   "15-03-2022"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Esgairdawe",
  "county": "Sir Gaerfyrddin - Carmarthenshire"
 }
}