{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.8446, -3.0510)",
 "slug": "discovered-lane-50-8446-3-0510",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 46.41622918299291,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 312.0,
   "end_distance_m": 314.0,
   "start_elevation_m": 101.15606267280702,
   "end_elevation_m": 102.08438725646688,
   "min_gradient_pct": -25.840747704778266,
   "suppressed_max_gradient_pct": 66.48797289366257,
   "suppressed_location_m": [
    12.0,
    14.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 42.79219360672452,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 720.0,
   "end_distance_m": 723.0,
   "start_elevation_m": 139.13320308749732,
   "end_elevation_m": 140.41696889569906,
   "min_gradient_pct": -18.862704889852466,
   "suppressed_max_gradient_pct": 56.84182915455741,
   "suppressed_location_m": [
    12.0,
    15.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.28271479738669,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 718.0,
   "end_distance_m": 723.0,
   "start_elevation_m": 138.70283315582972,
   "end_elevation_m": 140.41696889569906,
   "min_gradient_pct": -9.464869341565532,
   "suppressed_max_gradient_pct": 44.682211172458324,
   "suppressed_location_m": [
    10.0,
    15.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.163715736457846,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 714.0,
   "end_distance_m": 724.0,
   "start_elevation_m": 138.07428006003505,
   "end_elevation_m": 140.59065163368084,
   "min_gradient_pct": -2.9724164361203975
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.398650429000057,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 258.0,
   "end_distance_m": 278.0,
   "start_elevation_m": 94.55538349719106,
   "end_elevation_m": 98.83511358299107,
   "min_gradient_pct": -2.400210315657816
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.89499643605734,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 206.0,
   "end_distance_m": 231.0,
   "start_elevation_m": 85.86013844989277,
   "end_elevation_m": 91.08388755890711,
   "min_gradient_pct": -2.2880163841542753
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.49286016991175,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 192.0,
   "end_distance_m": 242.0,
   "start_elevation_m": 83.8562382104402,
   "end_elevation_m": 93.10266829539607,
   "min_gradient_pct": -1.4875578013558481
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.751581328804036,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 176.0,
   "end_distance_m": 276.0,
   "start_elevation_m": 81.68954195629426,
   "end_elevation_m": 98.4411232850983,
   "min_gradient_pct": 2.201034680344179
  }
 ],
 "shape": {
  "ascent_concentration": 0.339,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 150.0,
  "shape_class": "sustained"
 },
 "length_m": 1357.8976393775097,
 "start_elevation_m": 69.32019973754858,
 "end_elevation_m": 182.87140283386262,
 "endpoint_gain_m": 113.55120309631404,
 "overall_gradient_pct": 8.362280027850142,
 "accumulated_ascent_m": 119.75768573090598,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.28271479738669,
   "start_distance_m": 718.0,
   "end_distance_m": 723.0,
   "midpoint_distance_m": 720.5,
   "start_elevation_m": 138.70283315582972,
   "end_elevation_m": 140.41696889569906,
   "start_xy": [
    326157.88020548545,
    105620.3074670256
   ],
   "end_xy": [
    326159.1908802864,
    105625.13262314392
   ]
  },
  "max_10m": {
   "gradient_pct": 25.163715736457846,
   "start_distance_m": 714.0,
   "end_distance_m": 724.0,
   "midpoint_distance_m": 719.0,
   "start_elevation_m": 138.07428006003505,
   "end_elevation_m": 140.59065163368084,
   "start_xy": [
    326156.83166564466,
    105616.44734213095
   ],
   "end_xy": [
    326159.4530152466,
    105626.09765436758
   ]
  },
  "max_20m": {
   "gradient_pct": 21.398650429000057,
   "start_distance_m": 258.0,
   "end_distance_m": 278.0,
   "midpoint_distance_m": 268.0,
   "start_elevation_m": 94.55538349719106,
   "end_elevation_m": 98.83511358299107,
   "start_xy": [
    325759.06188531726,
    105479.60668596426
   ],
   "end_xy": [
    325777.4195585309,
    105487.4922970181
   ]
  },
  "max_25m": {
   "gradient_pct": 20.89499643605734,
   "start_distance_m": 206.0,
   "end_distance_m": 231.0,
   "midpoint_distance_m": 218.5,
   "start_elevation_m": 85.86013844989277,
   "end_elevation_m": 91.08388755890711,
   "start_xy": [
    325712.46062382474,
    105456.54058003092
   ],
   "end_xy": [
    325734.9438234069,
    105467.46917840767
   ]
  },
  "max_50m": {
   "gradient_pct": 18.49286016991175,
   "start_distance_m": 192.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 217.0,
   "start_elevation_m": 83.8562382104402,
   "end_elevation_m": 93.10266829539607,
   "start_xy": [
    325699.7386765792,
    105450.7686833313
   ],
   "end_xy": [
    325744.7697004815,
    105472.4140888937
   ]
  },
  "max_100m": {
   "gradient_pct": 16.751581328804036,
   "start_distance_m": 176.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 226.0,
   "start_elevation_m": 81.68954195629426,
   "end_elevation_m": 98.4411232850983,
   "start_xy": [
    325684.0334935343,
    105447.71136006946
   ],
   "end_xy": [
    325775.55644214764,
    105486.76511248681
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.464869341565532,
   "start_distance_m": 818.0,
   "end_distance_m": 823.0,
   "midpoint_distance_m": 820.5,
   "start_elevation_m": 147.8305254697976,
   "end_elevation_m": 147.35728200271933,
   "start_xy": [
    326222.61787359964,
    105694.4787504836
   ],
   "end_xy": [
    326226.3117011552,
    105697.84856323649
   ]
  },
  "min_10m": {
   "gradient_pct": -2.9724164361203975,
   "start_distance_m": 62.0,
   "end_distance_m": 72.0,
   "midpoint_distance_m": 67.0,
   "start_elevation_m": 71.23191973488387,
   "end_elevation_m": 70.93467809127183,
   "start_xy": [
    325572.1449319742,
    105467.43088900267
   ],
   "end_xy": [
    325581.82011846907,
    105464.90289250566
   ]
  },
  "min_20m": {
   "gradient_pct": -2.400210315657816,
   "start_distance_m": 19.0,
   "end_distance_m": 39.0,
   "midpoint_distance_m": 29.0,
   "start_elevation_m": 71.72121404201978,
   "end_elevation_m": 71.24117197888822,
   "start_xy": [
    325530.5416300461,
    105478.30127393981
   ],
   "end_xy": [
    325549.8920030359,
    105473.24528094579
   ]
  },
  "min_25m": {
   "gradient_pct": -2.2880163841542753,
   "start_distance_m": 15.0,
   "end_distance_m": 40.0,
   "midpoint_distance_m": 27.5,
   "start_elevation_m": 71.78786189607865,
   "end_elevation_m": 71.21585780004008,
   "start_xy": [
    325526.67367515597,
    105479.32054136948
   ],
   "end_xy": [
    325550.85952168534,
    105472.9924812961
   ]
  },
  "min_50m": {
   "gradient_pct": -1.4875578013558481,
   "start_distance_m": 19.0,
   "end_distance_m": 69.0,
   "midpoint_distance_m": 44.0,
   "start_elevation_m": 71.72121404201978,
   "end_elevation_m": 70.97743514134186,
   "start_xy": [
    325530.5416300461,
    105478.30127393981
   ],
   "end_xy": [
    325578.9175625206,
    105465.66129145477
   ]
  },
  "min_100m": {
   "gradient_pct": 2.201034680344179,
   "start_distance_m": 1236.0,
   "end_distance_m": 1336.0,
   "midpoint_distance_m": 1286.0,
   "start_elevation_m": 179.83863516669982,
   "end_elevation_m": 182.039669847044,
   "start_xy": [
    326436.14458336326,
    106044.70893498426
   ],
   "end_xy": [
    326473.6760252001,
    106136.42032510179
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 46.41622918299291,
   "start_distance_m": 312.0,
   "end_distance_m": 314.0,
   "midpoint_distance_m": 313.0,
   "start_elevation_m": 101.15606267280702,
   "end_elevation_m": 102.08438725646688,
   "start_xy": [
    325809.095704293,
    105499.84463114821
   ],
   "end_xy": [
    325811.0320906886,
    105500.34503870919
   ]
  },
  "max_3m": {
   "gradient_pct": 42.79219360672452,
   "start_distance_m": 720.0,
   "end_distance_m": 723.0,
   "midpoint_distance_m": 721.5,
   "start_elevation_m": 139.13320308749732,
   "end_elevation_m": 140.41696889569906,
   "start_xy": [
    326158.4044754058,
    105622.23752947293
   ],
   "end_xy": [
    326159.1908802864,
    105625.13262314392
   ]
  }
 },
 "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": 0.018,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.07,
   "obstruction_max_height_m": 8.86,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    23.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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/england/bulk_dtm_1m/ST2505.tif"
  ],
  "calculated_at": "2026-09-05T01:38:12+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "/mnt/HC_Volume_106792346/hunt-gb/regions/region-08.osm.pbf",
  "osm_snapshot": "",
  "run_id": "hunt-england-260905",
  "elevation_provider": "Environment Agency",
  "elevation_dataset": "EA LIDAR Composite DTM 1m (2022)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Environment Agency",
  "elevation_coverage_id": "13787b9a-26a4-4775-8523-806d13af58fc__Lidar_Composite_Elevation_DTM_1m",
  "elevation_tile_ids": [
   "ST2505.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Stockland",
  "county": "Devon"
 }
}