{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.1431, -4.4877)",
 "slug": "discovered-lane-52-1431-4-4877",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 42.925580724999435,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 69.0,
   "end_distance_m": 71.0,
   "start_elevation_m": 44.61105857786091,
   "end_elevation_m": 45.4695701923609,
   "min_gradient_pct": -85.654681554308,
   "suppressed_max_gradient_pct": 73.24213516733522,
   "suppressed_location_m": [
    314.0,
    316.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.663762986549706,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 535.0,
   "end_distance_m": 538.0,
   "start_elevation_m": 69.23031296975388,
   "end_elevation_m": 70.21022585935037,
   "min_gradient_pct": -71.6808667623179,
   "suppressed_max_gradient_pct": 58.16379297619131,
   "suppressed_location_m": [
    263.0,
    266.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.250872105115832,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 524.0,
   "end_distance_m": 529.0,
   "start_elevation_m": 66.87630473268543,
   "end_elevation_m": 68.28884833794122,
   "min_gradient_pct": -51.59789897943028,
   "suppressed_max_gradient_pct": 41.29654122433607,
   "suppressed_location_m": [
    582.0,
    587.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.310718830189927,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 519.0,
   "end_distance_m": 529.0,
   "start_elevation_m": 65.95777645492223,
   "end_elevation_m": 68.28884833794122,
   "min_gradient_pct": -24.113748716150525,
   "suppressed_max_gradient_pct": 24.853552547315445,
   "suppressed_location_m": [
    577.0,
    587.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.83385322320335,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 521.0,
   "end_distance_m": 541.0,
   "start_elevation_m": 66.38102327171234,
   "end_elevation_m": 70.947793916353,
   "min_gradient_pct": -13.752348393377787
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.042782475472904,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 516.0,
   "end_distance_m": 541.0,
   "start_elevation_m": 65.43709829748478,
   "end_elevation_m": 70.947793916353,
   "min_gradient_pct": -9.463704235123487
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.01291994339823,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 498.0,
   "end_distance_m": 548.0,
   "start_elevation_m": 62.92848364740402,
   "end_elevation_m": 71.93494361910314,
   "min_gradient_pct": -4.897989891901901
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.284609766483825,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 464.0,
   "end_distance_m": 564.0,
   "start_elevation_m": 59.57539684155441,
   "end_elevation_m": 73.86000660803823,
   "min_gradient_pct": -3.7270279145874885,
   "suppressed_max_gradient_pct": 15.585933058740068,
   "suppressed_location_m": [
    487.0,
    587.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.399,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 79.0,
  "shape_class": "sustained"
 },
 "length_m": 604.3158802644768,
 "start_elevation_m": 39.883926147605855,
 "end_elevation_m": 78.21544875415873,
 "endpoint_gain_m": 38.33152260655287,
 "overall_gradient_pct": 6.3429613317090405,
 "accumulated_ascent_m": 50.89729507419481,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.250872105115832,
   "start_distance_m": 524.0,
   "end_distance_m": 529.0,
   "midpoint_distance_m": 526.5,
   "start_elevation_m": 66.87630473268543,
   "end_elevation_m": 68.28884833794122,
   "start_xy": [
    229964.58686176126,
    252263.78041421025
   ],
   "end_xy": [
    229965.8075546986,
    252268.57255205172
   ]
  },
  "max_10m": {
   "gradient_pct": 23.310718830189927,
   "start_distance_m": 519.0,
   "end_distance_m": 529.0,
   "midpoint_distance_m": 524.0,
   "start_elevation_m": 65.95777645492223,
   "end_elevation_m": 68.28884833794122,
   "start_xy": [
    229961.91319607617,
    252259.5553096904
   ],
   "end_xy": [
    229965.8075546986,
    252268.57255205172
   ]
  },
  "max_20m": {
   "gradient_pct": 22.83385322320335,
   "start_distance_m": 521.0,
   "end_distance_m": 541.0,
   "midpoint_distance_m": 531.0,
   "start_elevation_m": 66.38102327171234,
   "end_elevation_m": 70.947793916353,
   "start_xy": [
    229962.9823483137,
    252261.2455501403
   ],
   "end_xy": [
    229960.40547804403,
    252278.68126895133
   ]
  },
  "max_25m": {
   "gradient_pct": 22.042782475472904,
   "start_distance_m": 516.0,
   "end_distance_m": 541.0,
   "midpoint_distance_m": 528.5,
   "start_elevation_m": 65.43709829748478,
   "end_elevation_m": 70.947793916353,
   "start_xy": [
    229960.30839666355,
    252257.02062650598
   ],
   "end_xy": [
    229960.40547804403,
    252278.68126895133
   ]
  },
  "max_50m": {
   "gradient_pct": 18.01291994339823,
   "start_distance_m": 498.0,
   "end_distance_m": 548.0,
   "midpoint_distance_m": 523.0,
   "start_elevation_m": 62.92848364740402,
   "end_elevation_m": 71.93494361910314,
   "start_xy": [
    229950.68147187398,
    252241.81134441425
   ],
   "end_xy": [
    229956.11752338542,
    252284.21421044393
   ]
  },
  "max_100m": {
   "gradient_pct": 14.284609766483825,
   "start_distance_m": 464.0,
   "end_distance_m": 564.0,
   "midpoint_distance_m": 514.0,
   "start_elevation_m": 59.57539684155441,
   "end_elevation_m": 73.86000660803823,
   "start_xy": [
    229932.49782466004,
    252213.08235550136
   ],
   "end_xy": [
    229942.9820888646,
    252292.81284583893
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -51.59789897943028,
   "start_distance_m": 308.0,
   "end_distance_m": 313.0,
   "midpoint_distance_m": 310.5,
   "start_elevation_m": 56.20517126175778,
   "end_elevation_m": 53.62527631278627,
   "start_xy": [
    229917.6615603537,
    252070.59952041676
   ],
   "end_xy": [
    229919.27982966285,
    252075.33039771926
   ]
  },
  "min_10m": {
   "gradient_pct": -24.113748716150525,
   "start_distance_m": 304.0,
   "end_distance_m": 314.0,
   "midpoint_distance_m": 309.0,
   "start_elevation_m": 55.98455413511308,
   "end_elevation_m": 53.57317926349803,
   "start_xy": [
    229916.36549084669,
    252066.81531684508
   ],
   "end_xy": [
    229919.60384716024,
    252076.2764488074
   ]
  },
  "min_20m": {
   "gradient_pct": -13.752348393377787,
   "start_distance_m": 294.0,
   "end_distance_m": 314.0,
   "midpoint_distance_m": 304.0,
   "start_elevation_m": 56.323648942173584,
   "end_elevation_m": 53.57317926349803,
   "start_xy": [
    229912.08370032546,
    252059.1284175648
   ],
   "end_xy": [
    229919.60384716024,
    252076.2764488074
   ]
  },
  "min_25m": {
   "gradient_pct": -9.463704235123487,
   "start_distance_m": 289.0,
   "end_distance_m": 314.0,
   "midpoint_distance_m": 301.5,
   "start_elevation_m": 55.9391053222789,
   "end_elevation_m": 53.57317926349803,
   "start_xy": [
    229907.515688027,
    252058.09969253905
   ],
   "end_xy": [
    229919.60384716024,
    252076.2764488074
   ]
  },
  "min_50m": {
   "gradient_pct": -4.897989891901901,
   "start_distance_m": 265.0,
   "end_distance_m": 315.0,
   "midpoint_distance_m": 290.0,
   "start_elevation_m": 56.734979386035604,
   "end_elevation_m": 54.285984440084654,
   "start_xy": [
    229886.14446387932,
    252047.1785780753
   ],
   "end_xy": [
    229919.92786465766,
    252077.22249989555
   ]
  },
  "min_100m": {
   "gradient_pct": -3.7270279145874885,
   "start_distance_m": 298.0,
   "end_distance_m": 398.0,
   "midpoint_distance_m": 348.0,
   "start_elevation_m": 56.62175320561269,
   "end_elevation_m": 52.8947252910252,
   "start_xy": [
    229914.42277072824,
    252061.1385366656
   ],
   "end_xy": [
    229927.64613961068,
    252153.24808511956
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 42.925580724999435,
   "start_distance_m": 69.0,
   "end_distance_m": 71.0,
   "midpoint_distance_m": 70.0,
   "start_elevation_m": 44.61105857786091,
   "end_elevation_m": 45.4695701923609,
   "start_xy": [
    229699.75111049798,
    251991.90434379844
   ],
   "end_xy": [
    229701.36873423946,
    251990.7583442161
   ]
  },
  "max_3m": {
   "gradient_pct": 32.663762986549706,
   "start_distance_m": 535.0,
   "end_distance_m": 538.0,
   "midpoint_distance_m": 536.5,
   "start_elevation_m": 69.23031296975388,
   "end_elevation_m": 70.21022585935037,
   "start_xy": [
    229964.0809412167,
    252273.93880463857
   ],
   "end_xy": [
    229962.2434896794,
    252276.31025393735
   ]
  }
 },
 "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": 0.026,
   "windows_resited": [
    2.0,
    3.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.078,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.119,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 10.0,
     "start_m": 577.0,
     "end_m": 587.0,
     "raw_pct": 24.85,
     "reason": "edge-step"
    },
    {
     "window_m": 5.0,
     "start_m": 402.0,
     "end_m": 407.0,
     "raw_pct": 34.73,
     "reason": "hump+short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.752,
   "obstruction_max_height_m": 24.47,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    110.0,
    140.0
   ],
   [
    262.0,
    267.0
   ],
   [
    309.0,
    318.0
   ],
   [
    400.0,
    409.0
   ],
   [
    575.0,
    589.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "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_14_229251_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_30_229252_20220320dtm.tif"
  ],
  "calculated_at": "2026-09-12T01:42:54+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-wales/batch-england-rchunk03.pbf",
  "osm_snapshot": "",
  "run_id": "texture-uk-wales-260912",
  "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_14_229251_20210321dtm.tif",
   "wg_del_30_229252_20220320dtm.tif"
  ],
  "elevation_capture_dates": [
   "20-03-2022",
   "21-03-2021"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Penbryn",
  "county": "Sir Ceredigion - Ceredigion"
 }
}