{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (51.9500, -3.5072)",
 "slug": "discovered-lane-51-9500-3-5072",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.914150795590274,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 457.0,
   "end_distance_m": 459.0,
   "start_elevation_m": 213.08043641652685,
   "end_elevation_m": 213.59871943243866,
   "min_gradient_pct": -67.8439046377676,
   "suppressed_max_gradient_pct": 90.83201045906861,
   "suppressed_location_m": [
    4.0,
    6.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.122716580164177,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 457.0,
   "end_distance_m": 460.0,
   "start_elevation_m": 213.08043641652685,
   "end_elevation_m": 213.80411791393178,
   "min_gradient_pct": -56.29472642196163,
   "suppressed_max_gradient_pct": 86.73836769106155,
   "suppressed_location_m": [
    3.0,
    6.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.402629576117988,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 448.0,
   "end_distance_m": 453.0,
   "start_elevation_m": 211.18949538580824,
   "end_elevation_m": 212.35962686461414,
   "min_gradient_pct": -5.306734652763225,
   "suppressed_max_gradient_pct": 52.09510100664488,
   "suppressed_location_m": [
    3.0,
    8.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.700653736001755,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 443.0,
   "end_distance_m": 453.0,
   "start_elevation_m": 210.08956149101397,
   "end_elevation_m": 212.35962686461414,
   "min_gradient_pct": -2.516943286171056,
   "suppressed_max_gradient_pct": 25.193827041713348,
   "suppressed_location_m": [
    3.0,
    13.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.79775094306251,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 439.0,
   "end_distance_m": 459.0,
   "start_elevation_m": 209.23916924382615,
   "end_elevation_m": 213.59871943243866,
   "min_gradient_pct": -1.4190158110224615
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.8442901496569,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 437.0,
   "end_distance_m": 462.0,
   "start_elevation_m": 208.7774437907893,
   "end_elevation_m": 214.23851632820353,
   "min_gradient_pct": -1.0233747120813632
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.662104074940885,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 414.0,
   "end_distance_m": 464.0,
   "start_elevation_m": 204.32705029084664,
   "end_elevation_m": 214.65810232831709,
   "min_gradient_pct": 0.18131346432488726
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.079915452511358,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 362.0,
   "end_distance_m": 462.0,
   "start_elevation_m": 194.15860087569217,
   "end_elevation_m": 214.23851632820353,
   "min_gradient_pct": 2.1397353131344516
  }
 ],
 "shape": {
  "ascent_concentration": 0.386,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 286.0,
  "shape_class": "sustained"
 },
 "length_m": 699.4735493855438,
 "start_elevation_m": 160.94098117096692,
 "end_elevation_m": 238.51581548181275,
 "endpoint_gain_m": 77.57483431084583,
 "overall_gradient_pct": 11.09046001510591,
 "accumulated_ascent_m": 80.2415914847154,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.402629576117988,
   "start_distance_m": 448.0,
   "end_distance_m": 453.0,
   "midpoint_distance_m": 450.5,
   "start_elevation_m": 211.18949538580824,
   "end_elevation_m": 212.35962686461414,
   "start_xy": [
    296424.74786278314,
    229494.43294339444
   ],
   "end_xy": [
    296423.98584197165,
    229499.37453466476
   ]
  },
  "max_10m": {
   "gradient_pct": 22.700653736001755,
   "start_distance_m": 443.0,
   "end_distance_m": 453.0,
   "midpoint_distance_m": 448.0,
   "start_elevation_m": 210.08956149101397,
   "end_elevation_m": 212.35962686461414,
   "start_xy": [
    296425.50988359464,
    229489.49135212414
   ],
   "end_xy": [
    296423.98584197165,
    229499.37453466476
   ]
  },
  "max_20m": {
   "gradient_pct": 21.79775094306251,
   "start_distance_m": 439.0,
   "end_distance_m": 459.0,
   "midpoint_distance_m": 449.0,
   "start_elevation_m": 209.23916924382615,
   "end_elevation_m": 213.59871943243866,
   "start_xy": [
    296426.11950024386,
    229485.53807910788
   ],
   "end_xy": [
    296423.0714169978,
    229505.30444418913
   ]
  },
  "max_25m": {
   "gradient_pct": 21.8442901496569,
   "start_distance_m": 437.0,
   "end_distance_m": 462.0,
   "midpoint_distance_m": 449.5,
   "start_elevation_m": 208.7774437907893,
   "end_elevation_m": 214.23851632820353,
   "start_xy": [
    296426.4243085685,
    229483.56144259978
   ],
   "end_xy": [
    296422.6142045109,
    229508.26939895132
   ]
  },
  "max_50m": {
   "gradient_pct": 20.662104074940885,
   "start_distance_m": 414.0,
   "end_distance_m": 464.0,
   "midpoint_distance_m": 439.0,
   "start_elevation_m": 204.32705029084664,
   "end_elevation_m": 214.65810232831709,
   "start_xy": [
    296429.9296043015,
    229460.83012275634
   ],
   "end_xy": [
    296422.30939618626,
    229510.24603545945
   ]
  },
  "max_100m": {
   "gradient_pct": 20.079915452511358,
   "start_distance_m": 362.0,
   "end_distance_m": 462.0,
   "midpoint_distance_m": 412.0,
   "start_elevation_m": 194.15860087569217,
   "end_elevation_m": 214.23851632820353,
   "start_xy": [
    296437.8546207414,
    229409.43757354512
   ],
   "end_xy": [
    296422.6142045109,
    229508.26939895132
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.306734652763225,
   "start_distance_m": 34.0,
   "end_distance_m": 39.0,
   "midpoint_distance_m": 36.5,
   "start_elevation_m": 161.76353489794275,
   "end_elevation_m": 161.4981981653046,
   "start_xy": [
    296495.24936671526,
    229090.6758620354
   ],
   "end_xy": [
    296490.39445268846,
    229091.6364863343
   ]
  },
  "min_10m": {
   "gradient_pct": -2.516943286171056,
   "start_distance_m": 7.0,
   "end_distance_m": 17.0,
   "midpoint_distance_m": 12.0,
   "start_elevation_m": 161.97447878744552,
   "end_elevation_m": 161.72278445882841,
   "start_xy": [
    296521.0521271567,
    229085.77880840882
   ],
   "end_xy": [
    296512.17760927224,
    229089.84123119098
   ]
  },
  "min_20m": {
   "gradient_pct": -1.4190158110224615,
   "start_distance_m": 7.0,
   "end_distance_m": 27.0,
   "midpoint_distance_m": 17.0,
   "start_elevation_m": 161.97447878744552,
   "end_elevation_m": 161.69067562524103,
   "start_xy": [
    296521.0521271567,
    229085.77880840882
   ],
   "end_xy": [
    296502.24913120177,
    229090.6184413688
   ]
  },
  "min_25m": {
   "gradient_pct": -1.0233747120813632,
   "start_distance_m": 14.0,
   "end_distance_m": 39.0,
   "midpoint_distance_m": 26.5,
   "start_elevation_m": 161.75404184332493,
   "end_elevation_m": 161.4981981653046,
   "start_xy": [
    296515.1202380202,
    229089.25733389557
   ],
   "end_xy": [
    296490.39445268846,
    229091.6364863343
   ]
  },
  "min_50m": {
   "gradient_pct": 0.18131346432488726,
   "start_distance_m": 7.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 32.0,
   "start_elevation_m": 161.97447878744552,
   "end_elevation_m": 162.06513551960796,
   "start_xy": [
    296521.0521271567,
    229085.77880840882
   ],
   "end_xy": [
    296485.38778254855,
    229108.21630167708
   ]
  },
  "min_100m": {
   "gradient_pct": 2.1397353131344516,
   "start_distance_m": 7.0,
   "end_distance_m": 107.0,
   "midpoint_distance_m": 57.0,
   "start_elevation_m": 161.97447878744552,
   "end_elevation_m": 164.11421410057997,
   "start_xy": [
    296521.0521271567,
    229085.77880840882
   ],
   "end_xy": [
    296477.04564241896,
    229157.50884397898
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.914150795590274,
   "start_distance_m": 457.0,
   "end_distance_m": 459.0,
   "midpoint_distance_m": 458.0,
   "start_elevation_m": 213.08043641652685,
   "end_elevation_m": 213.59871943243866,
   "start_xy": [
    296423.3762253224,
    229503.327807681
   ],
   "end_xy": [
    296423.0714169978,
    229505.30444418913
   ]
  },
  "max_3m": {
   "gradient_pct": 24.122716580164177,
   "start_distance_m": 457.0,
   "end_distance_m": 460.0,
   "midpoint_distance_m": 458.5,
   "start_elevation_m": 213.08043641652685,
   "end_elevation_m": 213.80411791393178,
   "start_xy": [
    296423.3762253224,
    229503.327807681
   ],
   "end_xy": [
    296422.9190128355,
    229506.2927624432
   ]
  }
 },
 "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,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.167,
   "obstruction_max_height_m": 26.31,
   "flagged_windows_m": [
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    8.0
   ]
  ],
  "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_296229_20211201dtm.tif"
  ],
  "calculated_at": "2026-09-04T22:04:45+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_18_296229_20211201dtm.tif"
  ],
  "elevation_capture_dates": [
   "01-12-2021"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Trallong",
  "county": "Powys - Powys"
 }
}