{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.2927, -3.7174)",
 "slug": "discovered-lane-50-2927-3-7174",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 46.25960581288204,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 354.0,
   "end_distance_m": 356.0,
   "start_elevation_m": 45.92128081710633,
   "end_elevation_m": 46.84647293336397,
   "min_gradient_pct": -30.218780043478688,
   "suppressed_max_gradient_pct": 66.8805922396448,
   "suppressed_location_m": [
    322.0,
    324.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 40.43989086928477,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 354.0,
   "end_distance_m": 357.0,
   "start_elevation_m": 45.92128081710633,
   "end_elevation_m": 47.13447754318487,
   "min_gradient_pct": -22.782671371619283,
   "suppressed_max_gradient_pct": 55.37879604498362,
   "suppressed_location_m": [
    321.0,
    324.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.68746114169633,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 368.0,
   "end_distance_m": 373.0,
   "start_elevation_m": 48.91429194059451,
   "end_elevation_m": 50.648664997679326,
   "min_gradient_pct": -20.359925361065052,
   "suppressed_max_gradient_pct": 43.8571012204045,
   "suppressed_location_m": [
    319.0,
    324.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.39574077745301,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "placement_excluded"
   ],
   "start_distance_m": 363.0,
   "end_distance_m": 373.0,
   "start_elevation_m": 48.009090919934025,
   "end_elevation_m": 50.648664997679326,
   "min_gradient_pct": -17.753402642404126,
   "suppressed_max_gradient_pct": 33.00177544283983,
   "suppressed_location_m": [
    315.0,
    325.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.640880528423956,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "placement_excluded"
   ],
   "start_distance_m": 353.0,
   "end_distance_m": 373.0,
   "start_elevation_m": 45.720488891994535,
   "end_elevation_m": 50.648664997679326,
   "min_gradient_pct": -15.651125349010115,
   "suppressed_max_gradient_pct": 30.681280740069354,
   "suppressed_location_m": [
    305.0,
    325.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.627766731378898,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 348.0,
   "end_distance_m": 373.0,
   "start_elevation_m": 44.7417233148346,
   "end_elevation_m": 50.648664997679326,
   "min_gradient_pct": -15.240801495289759,
   "suppressed_max_gradient_pct": 28.230632239896924,
   "suppressed_location_m": [
    300.0,
    325.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.297496242571526,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "placement_excluded"
   ],
   "start_distance_m": 354.0,
   "end_distance_m": 404.0,
   "start_elevation_m": 45.92128081710633,
   "end_elevation_m": 54.57002893839209,
   "min_gradient_pct": -13.382893150837644,
   "suppressed_max_gradient_pct": 22.861410853966476,
   "suppressed_location_m": [
    288.0,
    338.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.18371090243074,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "placement_excluded"
   ],
   "start_distance_m": 341.0,
   "end_distance_m": 441.0,
   "start_elevation_m": 43.8873378874209,
   "end_elevation_m": 59.07104878985164,
   "min_gradient_pct": -10.007584924211855,
   "suppressed_max_gradient_pct": 19.169108752799644,
   "suppressed_location_m": [
    273.0,
    373.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.423,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 72.0,
  "shape_class": "sustained"
 },
 "length_m": 2878.9464027516324,
 "start_elevation_m": 20.03204031488349,
 "end_elevation_m": 141.942544346145,
 "endpoint_gain_m": 121.91050403126152,
 "overall_gradient_pct": 4.234552748698002,
 "accumulated_ascent_m": 161.4762228382063,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.68746114169633,
   "start_distance_m": 368.0,
   "end_distance_m": 373.0,
   "midpoint_distance_m": 370.5,
   "start_elevation_m": 48.91429194059451,
   "end_elevation_m": 50.648664997679326,
   "start_xy": [
    276221.1026531296,
    45138.76842104021
   ],
   "end_xy": [
    276225.15572962165,
    45135.840525729625
   ]
  },
  "max_10m": {
   "gradient_pct": 26.39574077745301,
   "start_distance_m": 363.0,
   "end_distance_m": 373.0,
   "midpoint_distance_m": 368.0,
   "start_elevation_m": 48.009090919934025,
   "end_elevation_m": 50.648664997679326,
   "start_xy": [
    276217.04957663757,
    45141.69631635078
   ],
   "end_xy": [
    276225.15572962165,
    45135.840525729625
   ]
  },
  "max_20m": {
   "gradient_pct": 24.640880528423956,
   "start_distance_m": 353.0,
   "end_distance_m": 373.0,
   "midpoint_distance_m": 363.0,
   "start_elevation_m": 45.720488891994535,
   "end_elevation_m": 50.648664997679326,
   "start_xy": [
    276208.59979362634,
    45146.99039178541
   ],
   "end_xy": [
    276225.15572962165,
    45135.840525729625
   ]
  },
  "max_25m": {
   "gradient_pct": 23.627766731378898,
   "start_distance_m": 348.0,
   "end_distance_m": 373.0,
   "midpoint_distance_m": 360.5,
   "start_elevation_m": 44.7417233148346,
   "end_elevation_m": 50.648664997679326,
   "start_xy": [
    276204.14748299215,
    45149.26567858418
   ],
   "end_xy": [
    276225.15572962165,
    45135.840525729625
   ]
  },
  "max_50m": {
   "gradient_pct": 17.297496242571526,
   "start_distance_m": 354.0,
   "end_distance_m": 404.0,
   "midpoint_distance_m": 379.0,
   "start_elevation_m": 45.92128081710633,
   "end_elevation_m": 54.57002893839209,
   "start_xy": [
    276209.4902557532,
    45146.53533442565
   ],
   "end_xy": [
    276248.2163500599,
    45115.52995720622
   ]
  },
  "max_100m": {
   "gradient_pct": 15.18371090243074,
   "start_distance_m": 341.0,
   "end_distance_m": 441.0,
   "midpoint_distance_m": 391.0,
   "start_elevation_m": 43.8873378874209,
   "end_elevation_m": 59.07104878985164,
   "start_xy": [
    276197.9142481043,
    45152.45108010247
   ],
   "end_xy": [
    276271.1285363292,
    45086.47773318879
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -20.359925361065052,
   "start_distance_m": 1642.0,
   "end_distance_m": 1647.0,
   "midpoint_distance_m": 1644.5,
   "start_elevation_m": 76.63306795197133,
   "end_elevation_m": 75.61507168391807,
   "start_xy": [
    277412.3291276177,
    45112.015120051845
   ],
   "end_xy": [
    277417.29697668046,
    45111.44901432871
   ]
  },
  "min_10m": {
   "gradient_pct": -17.753402642404126,
   "start_distance_m": 1642.0,
   "end_distance_m": 1652.0,
   "midpoint_distance_m": 1647.0,
   "start_elevation_m": 76.63306795197133,
   "end_elevation_m": 74.85772768773091,
   "start_xy": [
    277412.3291276177,
    45112.015120051845
   ],
   "end_xy": [
    277422.2648257432,
    45110.882908605585
   ]
  },
  "min_20m": {
   "gradient_pct": -15.651125349010115,
   "start_distance_m": 1643.0,
   "end_distance_m": 1663.0,
   "midpoint_distance_m": 1653.0,
   "start_elevation_m": 76.46991525354956,
   "end_elevation_m": 73.33969018374754,
   "start_xy": [
    277413.32269743027,
    45111.901898907214
   ],
   "end_xy": [
    277433.2523344682,
    45111.13525834517
   ]
  },
  "min_25m": {
   "gradient_pct": -15.240801495289759,
   "start_distance_m": 1642.0,
   "end_distance_m": 1667.0,
   "midpoint_distance_m": 1654.5,
   "start_elevation_m": 76.63306795197133,
   "end_elevation_m": 72.82286757814889,
   "start_xy": [
    277412.3291276177,
    45112.015120051845
   ],
   "end_xy": [
    277437.2497808669,
    45111.278164920994
   ]
  },
  "min_50m": {
   "gradient_pct": -13.382893150837644,
   "start_distance_m": 1630.0,
   "end_distance_m": 1680.0,
   "midpoint_distance_m": 1655.0,
   "start_elevation_m": 78.08660342700892,
   "end_elevation_m": 71.3951568515901,
   "start_xy": [
    277400.5872375601,
    45114.27523862772
   ],
   "end_xy": [
    277450.24310399627,
    45111.62552711331
   ]
  },
  "min_100m": {
   "gradient_pct": -10.007584924211855,
   "start_distance_m": 1591.0,
   "end_distance_m": 1691.0,
   "midpoint_distance_m": 1641.0,
   "start_elevation_m": 80.82181232463881,
   "end_elevation_m": 70.81422740042696,
   "start_xy": [
    277363.49895344843,
    45126.30575253875
   ],
   "end_xy": [
    277461.2427499038,
    45111.53726666064
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 46.25960581288204,
   "start_distance_m": 354.0,
   "end_distance_m": 356.0,
   "midpoint_distance_m": 355.0,
   "start_elevation_m": 45.92128081710633,
   "end_elevation_m": 46.84647293336397,
   "start_xy": [
    276209.4902557532,
    45146.53533442565
   ],
   "end_xy": [
    276211.27118000685,
    45145.62521970614
   ]
  },
  "max_3m": {
   "gradient_pct": 40.43989086928477,
   "start_distance_m": 354.0,
   "end_distance_m": 357.0,
   "midpoint_distance_m": 355.5,
   "start_elevation_m": 45.92128081710633,
   "end_elevation_m": 47.13447754318487,
   "start_xy": [
    276209.4902557532,
    45146.53533442565
   ],
   "end_xy": [
    276212.1616421337,
    45145.17016234639
   ]
  }
 },
 "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": 0.002,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "placement_suppression": {
   "masked_fraction": 0.011,
   "windows_resited": [
    10.0,
    20.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.028,
   "obstruction_max_height_m": 7.78,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    310.0,
    340.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "extent": []
 },
 "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/SX7545.tif"
  ],
  "calculated_at": "2026-09-05T01:39:30+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-00.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": [
   "SX7545.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Goveton",
  "county": "Devon"
 }
}