{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.4525, -4.0665)",
 "slug": "discovered-lane-50-4525-4-0665",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 39.80732803303653,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 19.0,
   "end_distance_m": 21.0,
   "start_elevation_m": 80.40077921128822,
   "end_elevation_m": 81.19692577194895,
   "min_gradient_pct": -26.453037505968524,
   "suppressed_max_gradient_pct": 57.38995256063362,
   "suppressed_location_m": [
    7.0,
    9.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 37.51473763450832,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 18.0,
   "end_distance_m": 21.0,
   "start_elevation_m": 80.0714836429137,
   "end_elevation_m": 81.19692577194895,
   "min_gradient_pct": -16.762063376162455,
   "suppressed_max_gradient_pct": 45.77347970081197,
   "suppressed_location_m": [
    6.0,
    9.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.20243478574815,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 17.0,
   "end_distance_m": 22.0,
   "start_elevation_m": 79.79632067972649,
   "end_elevation_m": 81.4064424190139,
   "min_gradient_pct": -2.8729628596195766,
   "suppressed_max_gradient_pct": 32.57560165328158,
   "suppressed_location_m": [
    6.0,
    11.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.62811970235873,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 79.0,
   "end_distance_m": 89.0,
   "start_elevation_m": 90.34012662976129,
   "end_elevation_m": 93.10293859999716,
   "min_gradient_pct": 5.460123177777518
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.4035529187301,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 69.0,
   "end_distance_m": 89.0,
   "start_elevation_m": 88.42222801625114,
   "end_elevation_m": 93.10293859999716,
   "min_gradient_pct": 5.919072930511788,
   "suppressed_max_gradient_pct": 24.379199467100605,
   "suppressed_location_m": [
    6.0,
    26.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.373543082015658,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 64.0,
   "end_distance_m": 89.0,
   "start_elevation_m": 87.50955282949324,
   "end_elevation_m": 93.10293859999716,
   "min_gradient_pct": 5.972673314678445
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.88639208161561,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 39.0,
   "end_distance_m": 89.0,
   "start_elevation_m": 84.15974255918935,
   "end_elevation_m": 93.10293859999716,
   "min_gradient_pct": 6.174467981038617,
   "suppressed_max_gradient_pct": 18.19772608615122,
   "suppressed_location_m": [
    6.0,
    56.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.810943944138714,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 14.0,
   "end_distance_m": 114.0,
   "start_elevation_m": 79.25457412309454,
   "end_elevation_m": 96.06551806723326,
   "min_gradient_pct": 7.108379840606062,
   "suppressed_max_gradient_pct": 17.611532631728082,
   "suppressed_location_m": [
    6.0,
    106.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.346,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 268.0,
  "shape_class": "sustained"
 },
 "length_m": 564.1861953275463,
 "start_elevation_m": 76.894911348015,
 "end_elevation_m": 148.76132780822797,
 "endpoint_gain_m": 71.86641646021297,
 "overall_gradient_pct": 12.738067158571631,
 "accumulated_ascent_m": 72.63301911239341,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.20243478574815,
   "start_distance_m": 17.0,
   "end_distance_m": 22.0,
   "midpoint_distance_m": 19.5,
   "start_elevation_m": 79.79632067972649,
   "end_elevation_m": 81.4064424190139,
   "start_xy": [
    253254.6240581442,
    63470.30597042818
   ],
   "end_xy": [
    253259.51613406895,
    63469.272726436466
   ]
  },
  "max_10m": {
   "gradient_pct": 27.62811970235873,
   "start_distance_m": 79.0,
   "end_distance_m": 89.0,
   "midpoint_distance_m": 84.0,
   "start_elevation_m": 90.34012662976129,
   "end_elevation_m": 93.10293859999716,
   "start_xy": [
    253315.55924872693,
    63458.87325579771
   ],
   "end_xy": [
    253325.32873992276,
    63456.74221258983
   ]
  },
  "max_20m": {
   "gradient_pct": 23.4035529187301,
   "start_distance_m": 69.0,
   "end_distance_m": 89.0,
   "midpoint_distance_m": 79.0,
   "start_elevation_m": 88.42222801625114,
   "end_elevation_m": 93.10293859999716,
   "start_xy": [
    253305.72663071827,
    63460.69523908403
   ],
   "end_xy": [
    253325.32873992276,
    63456.74221258983
   ]
  },
  "max_25m": {
   "gradient_pct": 22.373543082015658,
   "start_distance_m": 64.0,
   "end_distance_m": 89.0,
   "midpoint_distance_m": 76.5,
   "start_elevation_m": 87.50955282949324,
   "end_elevation_m": 93.10293859999716,
   "start_xy": [
    253300.8103217139,
    63461.606230727186
   ],
   "end_xy": [
    253325.32873992276,
    63456.74221258983
   ]
  },
  "max_50m": {
   "gradient_pct": 17.88639208161561,
   "start_distance_m": 39.0,
   "end_distance_m": 89.0,
   "midpoint_distance_m": 64.0,
   "start_elevation_m": 84.15974255918935,
   "end_elevation_m": 93.10293859999716,
   "start_xy": [
    253276.22877669227,
    63466.16118894297
   ],
   "end_xy": [
    253325.32873992276,
    63456.74221258983
   ]
  },
  "max_100m": {
   "gradient_pct": 16.810943944138714,
   "start_distance_m": 14.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 64.0,
   "start_elevation_m": 79.25457412309454,
   "end_elevation_m": 96.06551806723326,
   "start_xy": [
    253251.68881258933,
    63470.9259168232
   ],
   "end_xy": [
    253349.7934089767,
    63451.75917206449
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.8729628596195766,
   "start_distance_m": 89.0,
   "end_distance_m": 94.0,
   "midpoint_distance_m": 91.5,
   "start_elevation_m": 93.10293859999716,
   "end_elevation_m": 92.95929045701618,
   "start_xy": [
    253325.32873992276,
    63456.74221258983
   ],
   "end_xy": [
    253330.20850638754,
    63455.65231385645
   ]
  },
  "min_10m": {
   "gradient_pct": 5.460123177777518,
   "start_distance_m": 523.0,
   "end_distance_m": 533.0,
   "midpoint_distance_m": 528.0,
   "start_elevation_m": 143.46873891881927,
   "end_elevation_m": 144.01475123659702,
   "start_xy": [
    253718.47717658384,
    63293.265151981366
   ],
   "end_xy": [
    253724.78711264982,
    63296.71212530042
   ]
  },
  "min_20m": {
   "gradient_pct": 5.919072930511788,
   "start_distance_m": 478.0,
   "end_distance_m": 498.0,
   "midpoint_distance_m": 488.0,
   "start_elevation_m": 140.61508911026615,
   "end_elevation_m": 141.7989036963685,
   "start_xy": [
    253675.97030842354,
    63308.035598173316
   ],
   "end_xy": [
    253694.86345902918,
    63301.47443515237
   ]
  },
  "min_25m": {
   "gradient_pct": 5.972673314678445,
   "start_distance_m": 480.0,
   "end_distance_m": 505.0,
   "midpoint_distance_m": 492.5,
   "start_elevation_m": 140.75260629542882,
   "end_elevation_m": 142.24577462409843,
   "start_xy": [
    253677.85962537397,
    63307.37948731315
   ],
   "end_xy": [
    253701.47567789454,
    63299.176923485575
   ]
  },
  "min_50m": {
   "gradient_pct": 6.174467981038617,
   "start_distance_m": 483.0,
   "end_distance_m": 533.0,
   "midpoint_distance_m": 508.0,
   "start_elevation_m": 140.9275172460777,
   "end_elevation_m": 144.01475123659702,
   "start_xy": [
    253680.6936007996,
    63306.3953210229
   ],
   "end_xy": [
    253724.78711264982,
    63296.71212530042
   ]
  },
  "min_100m": {
   "gradient_pct": 7.108379840606062,
   "start_distance_m": 433.0,
   "end_distance_m": 533.0,
   "midpoint_distance_m": 483.0,
   "start_elevation_m": 136.90637139599096,
   "end_elevation_m": 144.01475123659702,
   "start_xy": [
    253632.90482899948,
    63320.96391991937
   ],
   "end_xy": [
    253724.78711264982,
    63296.71212530042
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 39.80732803303653,
   "start_distance_m": 19.0,
   "end_distance_m": 21.0,
   "midpoint_distance_m": 20.0,
   "start_elevation_m": 80.40077921128822,
   "end_elevation_m": 81.19692577194895,
   "start_xy": [
    253256.5808885141,
    63469.89267283149
   ],
   "end_xy": [
    253258.53771888398,
    63469.479375234805
   ]
  },
  "max_3m": {
   "gradient_pct": 37.51473763450832,
   "start_distance_m": 18.0,
   "end_distance_m": 21.0,
   "midpoint_distance_m": 19.5,
   "start_elevation_m": 80.0714836429137,
   "end_elevation_m": 81.19692577194895,
   "start_xy": [
    253255.60247332914,
    63470.09932162984
   ],
   "end_xy": [
    253258.53771888398,
    63469.479375234805
   ]
  }
 },
 "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": 0.011,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    20.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.127,
   "obstruction_max_height_m": 10.44,
   "flagged_windows_m": [
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    5.0,
    10.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "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/england/bulk_dtm_1m/SX5060.tif"
  ],
  "calculated_at": "2026-09-05T02:26:29+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "/mnt/HC_Volume_106794610/hunt-gb/regions/region-05.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": [
   "SX5060.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Shaugh Prior",
  "county": "Devon"
 }
}