{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.0879, -4.6916)",
 "slug": "discovered-lane-52-0879-4-6916",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 56.92163633169649,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 467.0,
   "end_distance_m": 469.0,
   "start_elevation_m": 32.1629578155887,
   "end_elevation_m": 33.30139054222263,
   "min_gradient_pct": -49.509055101631105,
   "suppressed_max_gradient_pct": 75.11042088058986,
   "suppressed_location_m": [
    231.0,
    233.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 44.336987946703836,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 466.0,
   "end_distance_m": 469.0,
   "start_elevation_m": 31.971280903821512,
   "end_elevation_m": 33.30139054222263,
   "min_gradient_pct": -31.05361087590192,
   "suppressed_max_gradient_pct": 63.15941847840113,
   "suppressed_location_m": [
    415.0,
    418.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 29.4839255947511,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 464.0,
   "end_distance_m": 469.0,
   "start_elevation_m": 31.827194262485072,
   "end_elevation_m": 33.30139054222263,
   "min_gradient_pct": -20.08184894799882,
   "suppressed_max_gradient_pct": 44.99897625520461,
   "suppressed_location_m": [
    415.0,
    420.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.65217886691923,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1146.0,
   "end_distance_m": 1156.0,
   "start_elevation_m": 87.81837703761437,
   "end_elevation_m": 90.18359492430629,
   "min_gradient_pct": -10.19184257095656,
   "suppressed_max_gradient_pct": 31.86477990778709,
   "suppressed_location_m": [
    226.0,
    236.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.96892726939511,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1139.0,
   "end_distance_m": 1159.0,
   "start_elevation_m": 86.26013205951855,
   "end_elevation_m": 90.85391751339758,
   "min_gradient_pct": -6.377494802470878
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.547207134985964,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1134.0,
   "end_distance_m": 1159.0,
   "start_elevation_m": 85.21711572965108,
   "end_elevation_m": 90.85391751339758,
   "min_gradient_pct": -5.37759823913305
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.175493450643927,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1119.0,
   "end_distance_m": 1169.0,
   "start_elevation_m": 82.20477227347023,
   "end_elevation_m": 92.79251899879219,
   "min_gradient_pct": -1.6803806355959665
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.85216805802034,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1083.0,
   "end_distance_m": 1183.0,
   "start_elevation_m": 77.56769321750738,
   "end_elevation_m": 94.41986127552772,
   "min_gradient_pct": 0.7366842000241149
  }
 ],
 "shape": {
  "ascent_concentration": 0.401,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 129.0,
  "shape_class": "sustained"
 },
 "length_m": 1183.8395768516364,
 "start_elevation_m": 3.419619936656864,
 "end_elevation_m": 94.55145713806102,
 "endpoint_gain_m": 91.13183720140417,
 "overall_gradient_pct": 7.6979887295003975,
 "accumulated_ascent_m": 101.24347556036443,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 29.4839255947511,
   "start_distance_m": 464.0,
   "end_distance_m": 469.0,
   "midpoint_distance_m": 466.5,
   "start_elevation_m": 31.827194262485072,
   "end_elevation_m": 33.30139054222263,
   "start_xy": [
    216193.62883822917,
    247057.45648352633
   ],
   "end_xy": [
    216189.8771977187,
    247054.15231474643
   ]
  },
  "max_10m": {
   "gradient_pct": 23.65217886691923,
   "start_distance_m": 1146.0,
   "end_distance_m": 1156.0,
   "midpoint_distance_m": 1151.0,
   "start_elevation_m": 87.81837703761437,
   "end_elevation_m": 90.18359492430629,
   "start_xy": [
    215723.43426886213,
    246692.02404947623
   ],
   "end_xy": [
    215714.41669443567,
    246696.3464737339
   ]
  },
  "max_20m": {
   "gradient_pct": 22.96892726939511,
   "start_distance_m": 1139.0,
   "end_distance_m": 1159.0,
   "midpoint_distance_m": 1149.0,
   "start_elevation_m": 86.26013205951855,
   "end_elevation_m": 90.85391751339758,
   "start_xy": [
    215729.74657096065,
    246688.99835249587
   ],
   "end_xy": [
    215711.7049240007,
    246697.62875607607
   ]
  },
  "max_25m": {
   "gradient_pct": 22.547207134985964,
   "start_distance_m": 1134.0,
   "end_distance_m": 1159.0,
   "midpoint_distance_m": 1146.5,
   "start_elevation_m": 85.21711572965108,
   "end_elevation_m": 90.85391751339758,
   "start_xy": [
    215734.2553581739,
    246686.83714036705
   ],
   "end_xy": [
    215711.7049240007,
    246697.62875607607
   ]
  },
  "max_50m": {
   "gradient_pct": 21.175493450643927,
   "start_distance_m": 1119.0,
   "end_distance_m": 1169.0,
   "midpoint_distance_m": 1144.0,
   "start_elevation_m": 82.20477227347023,
   "end_elevation_m": 92.79251899879219,
   "start_xy": [
    215748.013124783,
    246680.8644242345
   ],
   "end_xy": [
    215702.488430493,
    246701.50899413868
   ]
  },
  "max_100m": {
   "gradient_pct": 16.85216805802034,
   "start_distance_m": 1083.0,
   "end_distance_m": 1183.0,
   "midpoint_distance_m": 1133.0,
   "start_elevation_m": 77.56769321750738,
   "end_elevation_m": 94.41986127552772,
   "start_xy": [
    215778.32154885703,
    246661.8122442569
   ],
   "end_xy": [
    215689.0640980221,
    246705.38273504865
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -20.08184894799882,
   "start_distance_m": 422.0,
   "end_distance_m": 427.0,
   "midpoint_distance_m": 424.5,
   "start_elevation_m": 33.347795113700656,
   "end_elevation_m": 32.343702666300715,
   "start_xy": [
    216225.74090694697,
    247084.52704027467
   ],
   "end_xy": [
    216221.9180416234,
    247081.30435494747
   ]
  },
  "min_10m": {
   "gradient_pct": -10.19184257095656,
   "start_distance_m": 445.0,
   "end_distance_m": 455.0,
   "midpoint_distance_m": 450.0,
   "start_elevation_m": 32.63697668274047,
   "end_elevation_m": 31.61779242564481,
   "start_xy": [
    216208.15572645864,
    247069.70268776963
   ],
   "end_xy": [
    216200.50999581156,
    247063.25731711526
   ]
  },
  "min_20m": {
   "gradient_pct": -6.377494802470878,
   "start_distance_m": 437.0,
   "end_distance_m": 457.0,
   "midpoint_distance_m": 447.0,
   "start_elevation_m": 32.91102520678733,
   "end_elevation_m": 31.635526246293153,
   "start_xy": [
    216214.27231097632,
    247074.85898429313
   ],
   "end_xy": [
    216198.98084968215,
    247061.96824298438
   ]
  },
  "min_25m": {
   "gradient_pct": -5.37759823913305,
   "start_distance_m": 434.0,
   "end_distance_m": 459.0,
   "midpoint_distance_m": 446.5,
   "start_elevation_m": 33.002758662159856,
   "end_elevation_m": 31.658359102376593,
   "start_xy": [
    216216.56603017045,
    247076.79259548942
   ],
   "end_xy": [
    216197.4517035527,
    247060.6791688535
   ]
  },
  "min_50m": {
   "gradient_pct": -1.6803806355959665,
   "start_distance_m": 552.0,
   "end_distance_m": 602.0,
   "midpoint_distance_m": 577.0,
   "start_elevation_m": 37.533966055872064,
   "end_elevation_m": 36.69377573807408,
   "start_xy": [
    216128.57029033345,
    246998.21430010424
   ],
   "end_xy": [
    216093.47685785705,
    246962.60171537477
   ]
  },
  "min_100m": {
   "gradient_pct": 0.7366842000241149,
   "start_distance_m": 541.0,
   "end_distance_m": 641.0,
   "midpoint_distance_m": 591.0,
   "start_elevation_m": 37.22556800023663,
   "end_elevation_m": 37.96225220026074,
   "start_xy": [
    216136.52453045335,
    247005.80468920319
   ],
   "end_xy": [
    216066.32941680326,
    246934.61003831323
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 56.92163633169649,
   "start_distance_m": 467.0,
   "end_distance_m": 469.0,
   "midpoint_distance_m": 468.0,
   "start_elevation_m": 32.1629578155887,
   "end_elevation_m": 33.30139054222263,
   "start_xy": [
    216191.35921625386,
    247055.49530434486
   ],
   "end_xy": [
    216189.8771977187,
    247054.15231474643
   ]
  },
  "max_3m": {
   "gradient_pct": 44.336987946703836,
   "start_distance_m": 466.0,
   "end_distance_m": 469.0,
   "midpoint_distance_m": 467.5,
   "start_elevation_m": 31.971280903821512,
   "end_elevation_m": 33.30139054222263,
   "start_xy": [
    216192.10022552143,
    247056.1667991441
   ],
   "end_xy": [
    216189.8771977187,
    247054.15231474643
   ]
  }
 },
 "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": 0.015,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.076,
   "windows_resited": [
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "placement_suppression": {
   "masked_fraction": 0.114,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.585,
   "obstruction_max_height_m": 18.0,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    230.0,
    280.0
   ],
   [
    414.0,
    419.0
   ],
   [
    423.0,
    428.0
   ],
   [
    430.0,
    460.0
   ],
   [
    470.0,
    510.0
   ]
  ],
  "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_35_215247_20210210dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_35_216246_20210210dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_35_216247_20210210dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_6_215246_20210210dtm.tif"
  ],
  "calculated_at": "2026-09-04T22:07:09+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_35_215247_20210210dtm.tif",
   "wg_del_35_216246_20210210dtm.tif",
   "wg_del_35_216247_20210210dtm.tif",
   "wg_del_6_215246_20210210dtm.tif"
  ],
  "elevation_capture_dates": [
   "10-02-2021"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Llandudoch",
  "county": "Sir Benfro - Pembrokeshire"
 }
}