{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.5929, -4.4043)",
 "slug": "discovered-lane-50-5929-4-4043",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 34.44538176642311,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 863.0,
   "end_distance_m": 865.0,
   "start_elevation_m": 143.53218946339678,
   "end_elevation_m": 144.22109709872524,
   "min_gradient_pct": -21.613442180471054
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.74199655436121,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 864.0,
   "end_distance_m": 867.0,
   "start_elevation_m": 143.8749815936786,
   "end_elevation_m": 144.85724149030943,
   "min_gradient_pct": -18.975749502887613
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.94558761835458,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 862.0,
   "end_distance_m": 867.0,
   "start_elevation_m": 143.3099621093917,
   "end_elevation_m": 144.85724149030943,
   "min_gradient_pct": -16.250519624526305
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.15596617144149,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 835.0,
   "end_distance_m": 845.0,
   "start_elevation_m": 138.64370951937948,
   "end_elevation_m": 141.25930613652363,
   "min_gradient_pct": -15.383543210799075
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.04694134436039,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 828.0,
   "end_distance_m": 848.0,
   "start_elevation_m": 137.45745919060838,
   "end_elevation_m": 141.86684745948045,
   "min_gradient_pct": -14.134547624276621
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.400950759822194,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 823.0,
   "end_distance_m": 848.0,
   "start_elevation_m": 136.5166097695249,
   "end_elevation_m": 141.86684745948045,
   "min_gradient_pct": -13.085375028913177
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.082506916601233,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 686.0,
   "end_distance_m": 736.0,
   "start_elevation_m": 111.35285898722904,
   "end_elevation_m": 121.39411244552966,
   "min_gradient_pct": -10.83812118696801
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.329377132718633,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 686.0,
   "end_distance_m": 786.0,
   "start_elevation_m": 111.35285898722904,
   "end_elevation_m": 130.68223611994767,
   "min_gradient_pct": -7.9198770112868715
  }
 ],
 "shape": {
  "ascent_concentration": 0.552,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 245.0,
  "shape_class": "stepped"
 },
 "length_m": 3030.5828969312647,
 "start_elevation_m": 97.28289844482445,
 "end_elevation_m": 192.65592983480846,
 "endpoint_gain_m": 95.373031389984,
 "overall_gradient_pct": 3.1470193897866214,
 "accumulated_ascent_m": 133.81335097202376,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.94558761835458,
   "start_distance_m": 862.0,
   "end_distance_m": 867.0,
   "midpoint_distance_m": 864.5,
   "start_elevation_m": 143.3099621093917,
   "end_elevation_m": 144.85724149030943,
   "start_xy": [
    229474.2787931002,
    80211.97694590056
   ],
   "end_xy": [
    229469.34291841052,
    80211.17873474574
   ]
  },
  "max_10m": {
   "gradient_pct": 26.15596617144149,
   "start_distance_m": 835.0,
   "end_distance_m": 845.0,
   "midpoint_distance_m": 840.0,
   "start_elevation_m": 138.64370951937948,
   "end_elevation_m": 141.25930613652363,
   "start_xy": [
    229500.93251642454,
    80216.2872861365
   ],
   "end_xy": [
    229491.06076704516,
    80214.6908638269
   ]
  },
  "max_20m": {
   "gradient_pct": 22.04694134436039,
   "start_distance_m": 828.0,
   "end_distance_m": 848.0,
   "midpoint_distance_m": 838.0,
   "start_elevation_m": 137.45745919060838,
   "end_elevation_m": 141.86684745948045,
   "start_xy": [
    229507.8427409901,
    80217.40478175324
   ],
   "end_xy": [
    229488.09924223134,
    80214.21193713401
   ]
  },
  "max_25m": {
   "gradient_pct": 21.400950759822194,
   "start_distance_m": 823.0,
   "end_distance_m": 848.0,
   "midpoint_distance_m": 835.5,
   "start_elevation_m": 136.5166097695249,
   "end_elevation_m": 141.86684745948045,
   "start_xy": [
    229512.7786156798,
    80218.20299290805
   ],
   "end_xy": [
    229488.09924223134,
    80214.21193713401
   ]
  },
  "max_50m": {
   "gradient_pct": 20.082506916601233,
   "start_distance_m": 686.0,
   "end_distance_m": 736.0,
   "midpoint_distance_m": 711.0,
   "start_elevation_m": 111.35285898722904,
   "end_elevation_m": 121.39411244552966,
   "start_xy": [
    229643.7203072749,
    80251.22219521072
   ],
   "end_xy": [
    229598.66283528044,
    80232.09186700167
   ]
  },
  "max_100m": {
   "gradient_pct": 19.329377132718633,
   "start_distance_m": 686.0,
   "end_distance_m": 786.0,
   "midpoint_distance_m": 736.0,
   "start_elevation_m": 111.35285898722904,
   "end_elevation_m": 130.68223611994767,
   "start_xy": [
    229643.7203072749,
    80251.22219521072
   ],
   "end_xy": [
    229549.3040883835,
    80224.10975545361
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -16.250519624526305,
   "start_distance_m": 1370.0,
   "end_distance_m": 1375.0,
   "midpoint_distance_m": 1372.5,
   "start_elevation_m": 151.3084131549523,
   "end_elevation_m": 150.49588717372598,
   "start_xy": [
    228983.38498442093,
    80302.63630348901
   ],
   "end_xy": [
    228978.4243264573,
    80303.26230074746
   ]
  },
  "min_10m": {
   "gradient_pct": -15.383543210799075,
   "start_distance_m": 1366.0,
   "end_distance_m": 1376.0,
   "midpoint_distance_m": 1371.0,
   "start_elevation_m": 151.91899690108505,
   "end_elevation_m": 150.38064258000514,
   "start_xy": [
    228987.35351079187,
    80302.13550568224
   ],
   "end_xy": [
    228977.43219486455,
    80303.38750019915
   ]
  },
  "min_20m": {
   "gradient_pct": -14.134547624276621,
   "start_distance_m": 1355.0,
   "end_distance_m": 1375.0,
   "midpoint_distance_m": 1365.0,
   "start_elevation_m": 153.3227966985813,
   "end_elevation_m": 150.49588717372598,
   "start_xy": [
    228998.2669583119,
    80300.75831171362
   ],
   "end_xy": [
    228978.4243264573,
    80303.26230074746
   ]
  },
  "min_25m": {
   "gradient_pct": -13.085375028913177,
   "start_distance_m": 1350.0,
   "end_distance_m": 1375.0,
   "midpoint_distance_m": 1362.5,
   "start_elevation_m": 153.76723093095427,
   "end_elevation_m": 150.49588717372598,
   "start_xy": [
    229003.22761627557,
    80300.13231445517
   ],
   "end_xy": [
    228978.4243264573,
    80303.26230074746
   ]
  },
  "min_50m": {
   "gradient_pct": -10.83812118696801,
   "start_distance_m": 1340.0,
   "end_distance_m": 1390.0,
   "midpoint_distance_m": 1365.0,
   "start_elevation_m": 154.6963939547607,
   "end_elevation_m": 149.2773333612767,
   "start_xy": [
    229013.1489322029,
    80298.88031993824
   ],
   "end_xy": [
    228963.82295675625,
    80306.57239409072
   ]
  },
  "min_100m": {
   "gradient_pct": -7.9198770112868715,
   "start_distance_m": 1294.0,
   "end_distance_m": 1394.0,
   "midpoint_distance_m": 1344.0,
   "start_elevation_m": 156.77489393970637,
   "end_elevation_m": 148.8550169284195,
   "start_xy": [
    229058.78698546853,
    80293.12114516042
   ],
   "end_xy": [
    228959.95888793675,
    80307.60630518851
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 34.44538176642311,
   "start_distance_m": 863.0,
   "end_distance_m": 865.0,
   "midpoint_distance_m": 864.0,
   "start_elevation_m": 143.53218946339678,
   "end_elevation_m": 144.22109709872524,
   "start_xy": [
    229473.29161816227,
    80211.8173036696
   ],
   "end_xy": [
    229471.3172682864,
    80211.49801920768
   ]
  },
  "max_3m": {
   "gradient_pct": 32.74199655436121,
   "start_distance_m": 864.0,
   "end_distance_m": 867.0,
   "midpoint_distance_m": 865.5,
   "start_elevation_m": 143.8749815936786,
   "end_elevation_m": 144.85724149030943,
   "start_xy": [
    229472.30444322433,
    80211.65766143863
   ],
   "end_xy": [
    229469.34291841052,
    80211.17873474574
   ]
  }
 },
 "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": 0.104,
   "obstruction_max_height_m": 23.72,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    100
   ]
  },
  "review": [],
  "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/SX2575.tif",
   "data/cache/england/bulk_dtm_1m/SX2580.tif"
  ],
  "calculated_at": "2026-09-05T00:02:19+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "/root/uk-climbs/data/cache/pbf/england-2026-08-27.osm.pbf",
  "osm_snapshot": "2026-08-26T20:22:15Z",
  "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": [
   "SX2575.tif",
   "SX2580.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Newtown",
  "county": "Cornwall"
 }
}