{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.7373, -3.7861)",
 "slug": "discovered-lane-50-7373-3-7861",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.42461807053314,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 413.0,
   "end_distance_m": 415.0,
   "start_elevation_m": 190.8918052625507,
   "end_elevation_m": 191.60029762396135,
   "min_gradient_pct": -35.788669555792296,
   "suppressed_max_gradient_pct": 44.72469798527925,
   "suppressed_location_m": [
    9.0,
    11.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 35.3503734622412,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 412.0,
   "end_distance_m": 415.0,
   "start_elevation_m": 190.53978642009412,
   "end_elevation_m": 191.60029762396135,
   "min_gradient_pct": -29.35497920585893,
   "suppressed_max_gradient_pct": 41.32770498566458,
   "suppressed_location_m": [
    8.0,
    11.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.76354576359813,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 412.0,
   "end_distance_m": 417.0,
   "start_elevation_m": 190.53978642009412,
   "end_elevation_m": 192.12796370827402,
   "min_gradient_pct": -20.21418694492752
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.154574580643896,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 409.0,
   "end_distance_m": 419.0,
   "start_elevation_m": 190.1147568978435,
   "end_elevation_m": 192.6302143559079,
   "min_gradient_pct": -4.601533866704415
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.47475219328527,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 207.0,
   "end_distance_m": 227.0,
   "start_elevation_m": 159.8091263176495,
   "end_elevation_m": 164.10407675630654,
   "min_gradient_pct": -3.951561001965871
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.240134876508932,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 202.0,
   "end_distance_m": 227.0,
   "start_elevation_m": 158.7940430371793,
   "end_elevation_m": 164.10407675630654,
   "min_gradient_pct": -3.5859913284712093
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.552865189436716,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 179.0,
   "end_distance_m": 229.0,
   "start_elevation_m": 154.20834837914163,
   "end_elevation_m": 164.48478097385998,
   "min_gradient_pct": -2.6813432075206265
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.983664265729146,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 172.0,
   "end_distance_m": 272.0,
   "start_elevation_m": 152.93246673436323,
   "end_elevation_m": 171.91613100009238,
   "min_gradient_pct": -0.8030569630561786
  }
 ],
 "shape": {
  "ascent_concentration": 0.409,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 212.0,
  "shape_class": "sustained"
 },
 "length_m": 694.0180627603954,
 "start_elevation_m": 132.93257507397465,
 "end_elevation_m": 203.2269584833512,
 "endpoint_gain_m": 70.29438340937656,
 "overall_gradient_pct": 10.128610072450691,
 "accumulated_ascent_m": 73.52556065061327,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.76354576359813,
   "start_distance_m": 412.0,
   "end_distance_m": 417.0,
   "midpoint_distance_m": 414.5,
   "start_elevation_m": 190.53978642009412,
   "end_elevation_m": 192.12796370827402,
   "start_xy": [
    274345.8645609927,
    94382.7948990248
   ],
   "end_xy": [
    274350.00795500726,
    94379.99627685669
   ]
  },
  "max_10m": {
   "gradient_pct": 25.154574580643896,
   "start_distance_m": 409.0,
   "end_distance_m": 419.0,
   "midpoint_distance_m": 414.0,
   "start_elevation_m": 190.1147568978435,
   "end_elevation_m": 192.6302143559079,
   "start_xy": [
    274343.3785245839,
    94384.47407232567
   ],
   "end_xy": [
    274351.6653126131,
    94378.87682798946
   ]
  },
  "max_20m": {
   "gradient_pct": 21.47475219328527,
   "start_distance_m": 207.0,
   "end_distance_m": 227.0,
   "midpoint_distance_m": 217.0,
   "start_elevation_m": 159.8091263176495,
   "end_elevation_m": 164.10407675630654,
   "start_xy": [
    274169.0930504831,
    94486.32878576076
   ],
   "end_xy": [
    274186.13317000115,
    94475.85814457643
   ]
  },
  "max_25m": {
   "gradient_pct": 21.240134876508932,
   "start_distance_m": 202.0,
   "end_distance_m": 227.0,
   "midpoint_distance_m": 214.5,
   "start_elevation_m": 158.7940430371793,
   "end_elevation_m": 164.10407675630654,
   "start_xy": [
    274164.83302060363,
    94488.94644605686
   ],
   "end_xy": [
    274186.13317000115,
    94475.85814457643
   ]
  },
  "max_50m": {
   "gradient_pct": 20.552865189436716,
   "start_distance_m": 179.0,
   "end_distance_m": 229.0,
   "midpoint_distance_m": 204.0,
   "start_elevation_m": 154.20834837914163,
   "end_elevation_m": 164.48478097385998,
   "start_xy": [
    274145.19208580634,
    94500.90539452521
   ],
   "end_xy": [
    274187.83718195296,
    94474.81108045799
   ]
  },
  "max_100m": {
   "gradient_pct": 18.983664265729146,
   "start_distance_m": 172.0,
   "end_distance_m": 272.0,
   "midpoint_distance_m": 222.0,
   "start_elevation_m": 152.93246673436323,
   "end_elevation_m": 171.91613100009238,
   "start_xy": [
    274138.8770160332,
    94503.92531070962
   ],
   "end_xy": [
    274224.68286250695,
    94452.6608488129
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -20.21418694492752,
   "start_distance_m": 2.0,
   "end_distance_m": 7.0,
   "midpoint_distance_m": 4.5,
   "start_elevation_m": 132.87249236023504,
   "end_elevation_m": 131.86178301298867,
   "start_xy": [
    274051.1352864533,
    94630.75174092303
   ],
   "end_xy": [
    274051.8535025865,
    94625.80359323061
   ]
  },
  "min_10m": {
   "gradient_pct": -4.601533866704415,
   "start_distance_m": 678.0,
   "end_distance_m": 688.0,
   "midpoint_distance_m": 683.0,
   "start_elevation_m": 203.80550308598046,
   "end_elevation_m": 203.34534969931002,
   "start_xy": [
    274550.356485003,
    94219.07690625463
   ],
   "end_xy": [
    274559.202283002,
    94214.41403333675
   ]
  },
  "min_20m": {
   "gradient_pct": -3.951561001965871,
   "start_distance_m": 671.0,
   "end_distance_m": 691.0,
   "midpoint_distance_m": 681.0,
   "start_elevation_m": 204.02319067716502,
   "end_elevation_m": 203.23287847677184,
   "start_xy": [
    274544.0867226305,
    94222.18979555434
   ],
   "end_xy": [
    274561.8506686418,
    94213.0047592318
   ]
  },
  "min_25m": {
   "gradient_pct": -3.5859913284712093,
   "start_distance_m": 666.0,
   "end_distance_m": 691.0,
   "midpoint_distance_m": 678.5,
   "start_elevation_m": 204.12937630888965,
   "end_elevation_m": 203.23287847677184,
   "start_xy": [
    274539.60832093586,
    94224.41328791127
   ],
   "end_xy": [
    274561.8506686418,
    94213.0047592318
   ]
  },
  "min_50m": {
   "gradient_pct": -2.6813432075206265,
   "start_distance_m": 642.0,
   "end_distance_m": 692.0,
   "midpoint_distance_m": 667.0,
   "start_elevation_m": 204.56131011477186,
   "end_elevation_m": 203.22063851101154,
   "start_xy": [
    274518.1119928015,
    94235.08605122456
   ],
   "end_xy": [
    274562.73346385505,
    94212.53500119681
   ]
  },
  "min_100m": {
   "gradient_pct": -0.8030569630561786,
   "start_distance_m": 594.0,
   "end_distance_m": 694.0,
   "midpoint_distance_m": 644.0,
   "start_elevation_m": 204.03038590720104,
   "end_elevation_m": 203.22732894414486,
   "start_xy": [
    274476.83386473334,
    94258.94123082684
   ],
   "end_xy": [
    274564.4990542816,
    94211.59548512683
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.42461807053314,
   "start_distance_m": 413.0,
   "end_distance_m": 415.0,
   "midpoint_distance_m": 414.0,
   "start_elevation_m": 190.8918052625507,
   "end_elevation_m": 191.60029762396135,
   "start_xy": [
    274346.69323979557,
    94382.23517459119
   ],
   "end_xy": [
    274348.35059740144,
    94381.11572572394
   ]
  },
  "max_3m": {
   "gradient_pct": 35.3503734622412,
   "start_distance_m": 412.0,
   "end_distance_m": 415.0,
   "midpoint_distance_m": 413.5,
   "start_elevation_m": 190.53978642009412,
   "end_elevation_m": 191.60029762396135,
   "start_xy": [
    274345.8645609927,
    94382.7948990248
   ],
   "end_xy": [
    274348.35059740144,
    94381.11572572394
   ]
  }
 },
 "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": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.053,
   "obstruction_max_height_m": 6.58,
   "flagged_windows_m": [
    2,
    5
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    17.0
   ]
  ],
  "review": [],
  "extent": [
   "descends_at_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/england/bulk_dtm_1m/SX7090.tif"
  ],
  "calculated_at": "2026-09-05T02:02:54+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": [
   "SX7090.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Hittisleigh",
  "county": "Devon"
 }
}