{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (52.0130, -4.7787)",
 "slug": "discovered-lane-52-0130-4-7787",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.08884190976613,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 248.0,
   "end_distance_m": 250.0,
   "start_elevation_m": 73.9427865713328,
   "end_elevation_m": 74.60456340952813,
   "min_gradient_pct": -2.479560490192867
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.47232912090638,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 152.0,
   "end_distance_m": 155.0,
   "start_elevation_m": 61.13355807309746,
   "end_elevation_m": 61.95772794672465,
   "min_gradient_pct": -2.1245881718066073
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.94307763879877,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 152.0,
   "end_distance_m": 157.0,
   "start_elevation_m": 61.13355807309746,
   "end_elevation_m": 62.4807119550374,
   "min_gradient_pct": -1.472407967276581
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.076339884397342,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 148.0,
   "end_distance_m": 158.0,
   "start_elevation_m": 60.22586733219261,
   "end_elevation_m": 62.63350132063234,
   "min_gradient_pct": -0.8254582990097248
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.40825237485302,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 137.0,
   "end_distance_m": 157.0,
   "start_elevation_m": 58.199061480066796,
   "end_elevation_m": 62.4807119550374,
   "min_gradient_pct": 0.5362281412786629
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.63858004260439,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 132.0,
   "end_distance_m": 157.0,
   "start_elevation_m": 57.3210669443863,
   "end_elevation_m": 62.4807119550374,
   "min_gradient_pct": 1.2899823663144332
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.821944730271255,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 109.0,
   "end_distance_m": 159.0,
   "start_elevation_m": 53.892560418375574,
   "end_elevation_m": 62.8035327835112,
   "min_gradient_pct": 5.127050765054391
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.488433545525368,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 59.0,
   "end_distance_m": 159.0,
   "start_elevation_m": 47.315099237985834,
   "end_elevation_m": 62.8035327835112,
   "min_gradient_pct": 8.261433686831282
  }
 ],
 "shape": {
  "ascent_concentration": 0.312,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 127.0,
  "shape_class": "sustained"
 },
 "length_m": 471.99999999999966,
 "start_elevation_m": 43.60276970950503,
 "end_elevation_m": 100.46793672350418,
 "endpoint_gain_m": 56.86516701399915,
 "overall_gradient_pct": 12.047704875847286,
 "accumulated_ascent_m": 57.429345043103886,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.94307763879877,
   "start_distance_m": 152.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 154.5,
   "start_elevation_m": 61.13355807309746,
   "end_elevation_m": 62.4807119550374,
   "start_xy": [
    209666.36392463092,
    238674.35215476906
   ],
   "end_xy": [
    209662.00344992074,
    238671.9054712379
   ]
  },
  "max_10m": {
   "gradient_pct": 24.076339884397342,
   "start_distance_m": 148.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 153.0,
   "start_elevation_m": 60.22586733219261,
   "end_elevation_m": 62.63350132063234,
   "start_xy": [
    209669.85230439907,
    238676.30950159402
   ],
   "end_xy": [
    209661.1313549787,
    238671.41613453167
   ]
  },
  "max_20m": {
   "gradient_pct": 21.40825237485302,
   "start_distance_m": 137.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 147.0,
   "start_elevation_m": 58.199061480066796,
   "end_elevation_m": 62.4807119550374,
   "start_xy": [
    209679.4453487615,
    238681.6922053626
   ],
   "end_xy": [
    209662.00344992074,
    238671.9054712379
   ]
  },
  "max_25m": {
   "gradient_pct": 20.63858004260439,
   "start_distance_m": 132.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 144.5,
   "start_elevation_m": 57.3210669443863,
   "end_elevation_m": 62.4807119550374,
   "start_xy": [
    209683.77658482618,
    238684.18818047
   ],
   "end_xy": [
    209662.00344992074,
    238671.9054712379
   ]
  },
  "max_50m": {
   "gradient_pct": 17.821944730271255,
   "start_distance_m": 109.0,
   "end_distance_m": 159.0,
   "midpoint_distance_m": 134.0,
   "start_elevation_m": 53.892560418375574,
   "end_elevation_m": 62.8035327835112,
   "start_xy": [
    209703.27021239806,
    238696.3946739914
   ],
   "end_xy": [
    209660.25926003663,
    238670.92679782544
   ]
  },
  "max_100m": {
   "gradient_pct": 15.488433545525368,
   "start_distance_m": 59.0,
   "end_distance_m": 159.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 47.315099237985834,
   "end_elevation_m": 62.8035327835112,
   "start_xy": [
    209745.895853187,
    238722.52740746568
   ],
   "end_xy": [
    209660.25926003663,
    238670.92679782544
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.472407967276581,
   "start_distance_m": 12.0,
   "end_distance_m": 17.0,
   "midpoint_distance_m": 14.5,
   "start_elevation_m": 44.50124421625669,
   "end_elevation_m": 44.42762381789286,
   "start_xy": [
    209783.55094227818,
    238750.19712288553
   ],
   "end_xy": [
    209780.35127903504,
    238746.3734951448
   ]
  },
  "min_10m": {
   "gradient_pct": -0.8254582990097248,
   "start_distance_m": 12.0,
   "end_distance_m": 22.0,
   "midpoint_distance_m": 17.0,
   "start_elevation_m": 44.50124421625669,
   "end_elevation_m": 44.418698386355715,
   "start_xy": [
    209783.55094227818,
    238750.19712288553
   ],
   "end_xy": [
    209776.63715117626,
    238743.02607012718
   ]
  },
  "min_20m": {
   "gradient_pct": 0.5362281412786629,
   "start_distance_m": 11.0,
   "end_distance_m": 31.0,
   "midpoint_distance_m": 21.0,
   "start_elevation_m": 44.48510660322154,
   "end_elevation_m": 44.59235223147727,
   "start_xy": [
    209784.161139073,
    238750.98937276503
   ],
   "end_xy": [
    209769.48213367563,
    238737.6167206612
   ]
  },
  "min_25m": {
   "gradient_pct": 1.2899823663144332,
   "start_distance_m": 7.0,
   "end_distance_m": 32.0,
   "midpoint_distance_m": 19.5,
   "start_elevation_m": 44.31885935967847,
   "end_elevation_m": 44.64135495125708,
   "start_xy": [
    209786.4798846368,
    238754.23443069117
   ],
   "end_xy": [
    209768.63976651532,
    238737.0778166185
   ]
  },
  "min_50m": {
   "gradient_pct": 5.127050765054391,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 43.60276970950503,
   "end_elevation_m": 46.16629509203223,
   "start_xy": [
    209789.577,
    238760.512
   ],
   "end_xy": [
    209753.47715762976,
    238727.37754384996
   ]
  },
  "min_100m": {
   "gradient_pct": 8.261433686831282,
   "start_distance_m": 371.0,
   "end_distance_m": 471.0,
   "midpoint_distance_m": 421.0,
   "start_elevation_m": 92.03905342397731,
   "end_elevation_m": 100.30048711080859,
   "start_xy": [
    209456.85420710716,
    238614.8246577145
   ],
   "end_xy": [
    209370.4118368068,
    238569.28606541746
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.08884190976613,
   "start_distance_m": 248.0,
   "end_distance_m": 250.0,
   "midpoint_distance_m": 249.0,
   "start_elevation_m": 73.9427865713328,
   "end_elevation_m": 74.60456340952813,
   "start_xy": [
    209577.53114204202,
    238638.60772038173
   ],
   "end_xy": [
    209575.57095543094,
    238638.21064551506
   ]
  },
  "max_3m": {
   "gradient_pct": 27.47232912090638,
   "start_distance_m": 152.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 153.5,
   "start_elevation_m": 61.13355807309746,
   "end_elevation_m": 61.95772794672465,
   "start_xy": [
    209666.36392463092,
    238674.35215476906
   ],
   "end_xy": [
    209663.74763980482,
    238672.88414465036
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.772,
   "obstruction_max_height_m": 21.99,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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_6_209238_20210210dtm.tif"
  ],
  "calculated_at": "2026-09-05T06:01:48+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": "summit-260905-summit-wales-wales-2026-08-11",
  "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_6_209238_20210210dtm.tif"
  ],
  "elevation_capture_dates": [
   "10-02-2021"
  ],
  "route_summit_trim_m": 256.2,
  "route_summit_trim_loss_m": 6.0,
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Felindre Farchog",
  "county": "Sir Benfro - Pembrokeshire"
 }
}