{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.1054, -3.9820)",
 "slug": "discovered-lane-52-1054-3-9820",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.31807439754084,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 305.0,
   "end_distance_m": 307.0,
   "start_elevation_m": 260.42875774035076,
   "end_elevation_m": 261.0551192283016,
   "min_gradient_pct": -2.064221298368807
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.470665270408364,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 306.0,
   "end_distance_m": 309.0,
   "start_elevation_m": 260.6427206688171,
   "end_elevation_m": 261.52684062692936,
   "min_gradient_pct": -0.28223390736646553
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.61870966967456,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 261.0,
   "end_distance_m": 266.0,
   "start_elevation_m": 251.38379723781273,
   "end_elevation_m": 252.71473272129646,
   "min_gradient_pct": 0.15113071046698678
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.770145417421077,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 401.0,
   "end_distance_m": 411.0,
   "start_elevation_m": 278.01743135291866,
   "end_elevation_m": 280.49444589466077,
   "min_gradient_pct": 2.813864865181017
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.485762370777934,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 401.0,
   "end_distance_m": 421.0,
   "start_elevation_m": 278.01743135291866,
   "end_elevation_m": 282.71458382707425,
   "min_gradient_pct": 4.697296747008863
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.199886531065886,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 403.0,
   "end_distance_m": 428.0,
   "start_elevation_m": 278.48409282076943,
   "end_elevation_m": 284.2840644535359,
   "min_gradient_pct": 5.621359344093889
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.049453906126928,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 399.0,
   "end_distance_m": 449.0,
   "start_elevation_m": 277.5961094604568,
   "end_elevation_m": 289.12083641352024,
   "min_gradient_pct": 8.407270923394776
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.600848154055825,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 356.0,
   "end_distance_m": 456.0,
   "start_elevation_m": 269.6525652678631,
   "end_elevation_m": 290.25341342191894,
   "min_gradient_pct": 9.93090269058024
  }
 ],
 "shape": {
  "ascent_concentration": 0.342,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 348.0,
  "shape_class": "sustained"
 },
 "length_m": 777.804980634204,
 "start_elevation_m": 215.6051092982842,
 "end_elevation_m": 329.36703467102416,
 "endpoint_gain_m": 113.76192537273997,
 "overall_gradient_pct": 14.626021715620947,
 "accumulated_ascent_m": 113.94630895302734,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.61870966967456,
   "start_distance_m": 261.0,
   "end_distance_m": 266.0,
   "midpoint_distance_m": 263.5,
   "start_elevation_m": 251.38379723781273,
   "end_elevation_m": 252.71473272129646,
   "start_xy": [
    264587.2627392898,
    247275.46262443994
   ],
   "end_xy": [
    264582.94980325387,
    247272.93308243592
   ]
  },
  "max_10m": {
   "gradient_pct": 24.770145417421077,
   "start_distance_m": 401.0,
   "end_distance_m": 411.0,
   "midpoint_distance_m": 406.0,
   "start_elevation_m": 278.01743135291866,
   "end_elevation_m": 280.49444589466077,
   "start_xy": [
    264497.83815815445,
    247173.2214308367
   ],
   "end_xy": [
    264491.1229617503,
    247165.83609645153
   ]
  },
  "max_20m": {
   "gradient_pct": 23.485762370777934,
   "start_distance_m": 401.0,
   "end_distance_m": 421.0,
   "midpoint_distance_m": 411.0,
   "start_elevation_m": 278.01743135291866,
   "end_elevation_m": 282.71458382707425,
   "start_xy": [
    264497.83815815445,
    247173.2214308367
   ],
   "end_xy": [
    264485.95868638146,
    247157.27278751665
   ]
  },
  "max_25m": {
   "gradient_pct": 23.199886531065886,
   "start_distance_m": 403.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 415.5,
   "start_elevation_m": 278.48409282076943,
   "end_elevation_m": 284.2840644535359,
   "start_xy": [
    264496.46543546533,
    247171.7669094657
   ],
   "end_xy": [
    264482.34369362326,
    247151.2784712622
   ]
  },
  "max_50m": {
   "gradient_pct": 23.049453906126928,
   "start_distance_m": 399.0,
   "end_distance_m": 449.0,
   "midpoint_distance_m": 424.0,
   "start_elevation_m": 277.5961094604568,
   "end_elevation_m": 289.12083641352024,
   "start_xy": [
    264499.2108808436,
    247174.67595220773
   ],
   "end_xy": [
    264470.1044605319,
    247134.264239279
   ]
  },
  "max_100m": {
   "gradient_pct": 20.600848154055825,
   "start_distance_m": 356.0,
   "end_distance_m": 456.0,
   "midpoint_distance_m": 406.0,
   "start_elevation_m": 269.6525652678631,
   "end_elevation_m": 290.25341342191894,
   "start_xy": [
    264520.6400192594,
    247211.17889491134
   ],
   "end_xy": [
    264465.7478535942,
    247128.78519045733
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.15113071046698678,
   "start_distance_m": 771.0,
   "end_distance_m": 776.0,
   "midpoint_distance_m": 773.5,
   "start_elevation_m": 329.15817748780483,
   "end_elevation_m": 329.1657340233282,
   "start_xy": [
    264381.31795718754,
    247265.35886956032
   ],
   "end_xy": [
    264379.4208487854,
    247269.98498885302
   ]
  },
  "min_10m": {
   "gradient_pct": 2.813864865181017,
   "start_distance_m": 766.0,
   "end_distance_m": 776.0,
   "midpoint_distance_m": 771.0,
   "start_elevation_m": 328.8843475368101,
   "end_elevation_m": 329.1657340233282,
   "start_xy": [
    264383.21506558976,
    247260.7327502676
   ],
   "end_xy": [
    264379.4208487854,
    247269.98498885302
   ]
  },
  "min_20m": {
   "gradient_pct": 4.697296747008863,
   "start_distance_m": 757.0,
   "end_distance_m": 777.0,
   "midpoint_distance_m": 767.0,
   "start_elevation_m": 328.28321930509844,
   "end_elevation_m": 329.2226786545002,
   "start_xy": [
    264386.46125608345,
    247252.3400224826
   ],
   "end_xy": [
    264379.0414271049,
    247270.91021271158
   ]
  },
  "min_25m": {
   "gradient_pct": 5.621359344093889,
   "start_distance_m": 752.0,
   "end_distance_m": 777.0,
   "midpoint_distance_m": 764.5,
   "start_elevation_m": 327.81733881847674,
   "end_elevation_m": 329.2226786545002,
   "start_xy": [
    264388.00303619774,
    247247.59863788396
   ],
   "end_xy": [
    264379.0414271049,
    247270.91021271158
   ]
  },
  "min_50m": {
   "gradient_pct": 8.407270923394776,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 215.6051092982842,
   "end_elevation_m": 219.80874475998158,
   "start_xy": [
    264769.747,
    247261.448
   ],
   "end_xy": [
    264727.5665445402,
    247281.1482025252
   ]
  },
  "min_100m": {
   "gradient_pct": 9.93090269058024,
   "start_distance_m": 677.0,
   "end_distance_m": 777.0,
   "midpoint_distance_m": 727.0,
   "start_elevation_m": 319.29177596392,
   "end_elevation_m": 329.2226786545002,
   "start_xy": [
    264375.1922802784,
    247174.84906341322
   ],
   "end_xy": [
    264379.0414271049,
    247270.91021271158
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.31807439754084,
   "start_distance_m": 305.0,
   "end_distance_m": 307.0,
   "midpoint_distance_m": 306.0,
   "start_elevation_m": 260.42875774035076,
   "end_elevation_m": 261.0551192283016,
   "start_xy": [
    264550.6192899184,
    247251.179408268
   ],
   "end_xy": [
    264548.99040710815,
    247250.01891665213
   ]
  },
  "max_3m": {
   "gradient_pct": 29.470665270408364,
   "start_distance_m": 306.0,
   "end_distance_m": 309.0,
   "midpoint_distance_m": 307.5,
   "start_elevation_m": 260.6427206688171,
   "end_elevation_m": 261.52684062692936,
   "start_xy": [
    264549.8048485133,
    247250.59916246007
   ],
   "end_xy": [
    264547.363514208,
    247248.85589642974
   ]
  }
 },
 "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": {
  "no_bench_suppression": {
   "masked_fraction": 0.066,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.371,
   "obstruction_max_height_m": 29.49,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    530.0,
    580.0
   ]
  ],
  "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_30_264247_20220323dtm.tif"
  ],
  "calculated_at": "2026-09-04T22:04:18+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_30_264247_20220323dtm.tif"
  ],
  "elevation_capture_dates": [
   "23-03-2022"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Llanycrwys",
  "county": "Sir Gaerfyrddin - Carmarthenshire"
 }
}