{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.0063, -3.4749)",
 "slug": "discovered-lane-52-0063-3-4749",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 37.43179604294369,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 852.0,
   "end_distance_m": 854.0,
   "start_elevation_m": 293.180508881528,
   "end_elevation_m": 293.9291448023869,
   "min_gradient_pct": -43.0286853976213
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 36.60791719138956,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 851.0,
   "end_distance_m": 854.0,
   "start_elevation_m": 292.8309072866452,
   "end_elevation_m": 293.9291448023869,
   "min_gradient_pct": -39.692912903943046
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 35.93048784175835,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 888.0,
   "end_distance_m": 893.0,
   "start_elevation_m": 299.721525729894,
   "end_elevation_m": 301.5180501219819,
   "min_gradient_pct": -37.42879381329658
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 33.61740674276575,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 884.0,
   "end_distance_m": 894.0,
   "start_elevation_m": 298.4067892359533,
   "end_elevation_m": 301.76852991022986,
   "min_gradient_pct": -23.745051862357798
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.117581942287643,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 884.0,
   "end_distance_m": 904.0,
   "start_elevation_m": 298.4067892359533,
   "end_elevation_m": 303.8303056244108,
   "min_gradient_pct": -18.00627007367595
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.223165090042812,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 884.0,
   "end_distance_m": 909.0,
   "start_elevation_m": 298.4067892359533,
   "end_elevation_m": 304.712580508464,
   "min_gradient_pct": -17.129096563316125
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.19399920851731,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 871.0,
   "end_distance_m": 921.0,
   "start_elevation_m": 296.1314559711648,
   "end_elevation_m": 306.7284555754235,
   "min_gradient_pct": -16.094239101046583
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.39668766467429,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 850.0,
   "end_distance_m": 950.0,
   "start_elevation_m": 292.56909921819874,
   "end_elevation_m": 310.96578688287303,
   "min_gradient_pct": -7.816897408026705
  }
 ],
 "shape": {
  "ascent_concentration": 0.366,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 175.0,
  "shape_class": "sustained"
 },
 "length_m": 1565.5050363090581,
 "start_elevation_m": 236.2077915542578,
 "end_elevation_m": 344.7072857363262,
 "endpoint_gain_m": 108.49949418206839,
 "overall_gradient_pct": 6.930638462708126,
 "accumulated_ascent_m": 132.4810621627892,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 35.93048784175835,
   "start_distance_m": 888.0,
   "end_distance_m": 893.0,
   "midpoint_distance_m": 890.5,
   "start_elevation_m": 299.721525729894,
   "end_elevation_m": 301.5180501219819,
   "start_xy": [
    298388.7436316224,
    235297.59277322993
   ],
   "end_xy": [
    298387.1475646924,
    235302.33118755912
   ]
  },
  "max_10m": {
   "gradient_pct": 33.61740674276575,
   "start_distance_m": 884.0,
   "end_distance_m": 894.0,
   "midpoint_distance_m": 889.0,
   "start_elevation_m": 298.4067892359533,
   "end_elevation_m": 301.76852991022986,
   "start_xy": [
    298390.0204851664,
    235293.8020417666
   ],
   "end_xy": [
    298386.8283513064,
    235303.27887042495
   ]
  },
  "max_20m": {
   "gradient_pct": 27.117581942287643,
   "start_distance_m": 884.0,
   "end_distance_m": 904.0,
   "midpoint_distance_m": 894.0,
   "start_elevation_m": 298.4067892359533,
   "end_elevation_m": 303.8303056244108,
   "start_xy": [
    298390.0204851664,
    235293.8020417666
   ],
   "end_xy": [
    298383.29177771934,
    235312.59685315145
   ]
  },
  "max_25m": {
   "gradient_pct": 25.223165090042812,
   "start_distance_m": 884.0,
   "end_distance_m": 909.0,
   "midpoint_distance_m": 896.5,
   "start_elevation_m": 298.4067892359533,
   "end_elevation_m": 304.712580508464,
   "start_xy": [
    298390.0204851664,
    235293.8020417666
   ],
   "end_xy": [
    298380.7240497613,
    235316.88716469414
   ]
  },
  "max_50m": {
   "gradient_pct": 21.19399920851731,
   "start_distance_m": 871.0,
   "end_distance_m": 921.0,
   "midpoint_distance_m": 896.0,
   "start_elevation_m": 296.1314559711648,
   "end_elevation_m": 306.7284555754235,
   "start_xy": [
    298396.78266215924,
    235283.07036242174
   ],
   "end_xy": [
    298374.42120245215,
    235327.08820813094
   ]
  },
  "max_100m": {
   "gradient_pct": 18.39668766467429,
   "start_distance_m": 850.0,
   "end_distance_m": 950.0,
   "midpoint_distance_m": 900.0,
   "start_elevation_m": 292.56909921819874,
   "end_elevation_m": 310.96578688287303,
   "start_xy": [
    298415.10990624654,
    235272.8179420166
   ],
   "end_xy": [
    298356.68749159883,
    235350.03413368147
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -37.42879381329658,
   "start_distance_m": 93.0,
   "end_distance_m": 98.0,
   "midpoint_distance_m": 95.5,
   "start_elevation_m": 229.95960796398796,
   "end_elevation_m": 228.08816827332313,
   "start_xy": [
    298922.913656977,
    235085.31167604786
   ],
   "end_xy": [
    298925.0745024417,
    235089.82056468262
   ]
  },
  "min_10m": {
   "gradient_pct": -23.745051862357798,
   "start_distance_m": 88.0,
   "end_distance_m": 98.0,
   "midpoint_distance_m": 93.0,
   "start_elevation_m": 230.4626734595589,
   "end_elevation_m": 228.08816827332313,
   "start_xy": [
    298920.73887254135,
    235080.80941965152
   ],
   "end_xy": [
    298925.0745024417,
    235089.82056468262
   ]
  },
  "min_20m": {
   "gradient_pct": -18.00627007367595,
   "start_distance_m": 78.0,
   "end_distance_m": 98.0,
   "midpoint_distance_m": 88.0,
   "start_elevation_m": 231.68942228805832,
   "end_elevation_m": 228.08816827332313,
   "start_xy": [
    298916.3893036699,
    235071.80490685886
   ],
   "end_xy": [
    298925.0745024417,
    235089.82056468262
   ]
  },
  "min_25m": {
   "gradient_pct": -17.129096563316125,
   "start_distance_m": 73.0,
   "end_distance_m": 98.0,
   "midpoint_distance_m": 85.5,
   "start_elevation_m": 232.37044241415217,
   "end_elevation_m": 228.08816827332313,
   "start_xy": [
    298914.21451923426,
    235067.30265046254
   ],
   "end_xy": [
    298925.0745024417,
    235089.82056468262
   ]
  },
  "min_50m": {
   "gradient_pct": -16.094239101046583,
   "start_distance_m": 48.0,
   "end_distance_m": 98.0,
   "midpoint_distance_m": 73.0,
   "start_elevation_m": 236.13528782384643,
   "end_elevation_m": 228.08816827332313,
   "start_xy": [
    298906.0020966143,
    235043.84898196667
   ],
   "end_xy": [
    298925.0745024417,
    235089.82056468262
   ]
  },
  "min_100m": {
   "gradient_pct": -7.816897408026705,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 236.2077915542578,
   "end_elevation_m": 228.3908941462311,
   "start_xy": [
    298918.885,
    234998.09
   ],
   "end_xy": [
    298925.9231595143,
    235091.63158129575
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 37.43179604294369,
   "start_distance_m": 852.0,
   "end_distance_m": 854.0,
   "midpoint_distance_m": 853.0,
   "start_elevation_m": 293.180508881528,
   "end_elevation_m": 293.9291448023869,
   "start_xy": [
    298413.3644544287,
    235273.79436300756
   ],
   "end_xy": [
    298411.61900261085,
    235274.77078399854
   ]
  },
  "max_3m": {
   "gradient_pct": 36.60791719138956,
   "start_distance_m": 851.0,
   "end_distance_m": 854.0,
   "midpoint_distance_m": 852.5,
   "start_elevation_m": 292.8309072866452,
   "end_elevation_m": 293.9291448023869,
   "start_xy": [
    298414.2371803376,
    235273.3061525121
   ],
   "end_xy": [
    298411.61900261085,
    235274.77078399854
   ]
  }
 },
 "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": 0.02,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.351,
   "obstruction_max_height_m": 25.84,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    730.0,
    760.0
   ]
  ],
  "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_16_298234_20210329dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_16_298235_20210329dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_16_299234_20210329dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_16_299235_20210329dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_30_297234_20220323dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_30_297235_20220323dtm.tif"
  ],
  "calculated_at": "2026-09-04T22:08:34+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_16_298234_20210329dtm.tif",
   "wg_del_16_298235_20210329dtm.tif",
   "wg_del_16_299234_20210329dtm.tif",
   "wg_del_16_299235_20210329dtm.tif",
   "wg_del_30_297234_20220323dtm.tif",
   "wg_del_30_297235_20220323dtm.tif"
  ],
  "elevation_capture_dates": [
   "23-03-2022",
   "30-03-2021"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Pont-faen",
  "county": "Powys - Powys"
 }
}