{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (50.8693, -3.5170)",
 "slug": "discovered-lane-50-8693-3-5170",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 30.565366413617312,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 368.0,
   "end_distance_m": 370.0,
   "start_elevation_m": 111.89797157420374,
   "end_elevation_m": 112.50927890247608,
   "min_gradient_pct": -34.085402876053195
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.2340273401151,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 255.0,
   "end_distance_m": 258.0,
   "start_elevation_m": 90.27184644791109,
   "end_elevation_m": 91.08886726811454,
   "min_gradient_pct": -31.31323317739619
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.17811814498816,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 255.0,
   "end_distance_m": 260.0,
   "start_elevation_m": 90.27184644791109,
   "end_elevation_m": 91.6307523551605,
   "min_gradient_pct": -19.54062900216286
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.115935934290633,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 252.0,
   "end_distance_m": 262.0,
   "start_elevation_m": 89.50998906684808,
   "end_elevation_m": 92.12158266027714,
   "min_gradient_pct": -10.506594796565878
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.21699442274297,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 252.0,
   "end_distance_m": 272.0,
   "start_elevation_m": 89.50998906684808,
   "end_elevation_m": 94.55338795139667,
   "min_gradient_pct": -6.723489396773346
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.039984185895037,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 252.0,
   "end_distance_m": 277.0,
   "start_elevation_m": 89.50998906684808,
   "end_elevation_m": 95.76998511332184,
   "min_gradient_pct": -5.384755501079667
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 24.125424901793735,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 232.0,
   "end_distance_m": 282.0,
   "start_elevation_m": 84.85993669669766,
   "end_elevation_m": 96.92264914759453,
   "min_gradient_pct": 0.12916666517077147
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 23.137025298707115,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 199.0,
   "end_distance_m": 299.0,
   "start_elevation_m": 77.37923369679403,
   "end_elevation_m": 100.51625899550115,
   "min_gradient_pct": 4.62337894159819
  }
 ],
 "shape": {
  "ascent_concentration": 0.374,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 224.0,
  "shape_class": "sustained"
 },
 "length_m": 772.5237258065764,
 "start_elevation_m": 60.794626304015054,
 "end_elevation_m": 161.6498074318851,
 "endpoint_gain_m": 100.85518112787005,
 "overall_gradient_pct": 13.055285910160132,
 "accumulated_ascent_m": 103.84323863864482,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.17811814498816,
   "start_distance_m": 255.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 257.5,
   "start_elevation_m": 90.27184644791109,
   "end_elevation_m": 91.6307523551605,
   "start_xy": [
    293076.6372690613,
    108626.22078993362
   ],
   "end_xy": [
    293080.79751073086,
    108628.99430561786
   ]
  },
  "max_10m": {
   "gradient_pct": 26.115935934290633,
   "start_distance_m": 252.0,
   "end_distance_m": 262.0,
   "midpoint_distance_m": 257.0,
   "start_elevation_m": 89.50998906684808,
   "end_elevation_m": 92.12158266027714,
   "start_xy": [
    293074.1411240595,
    108624.55668052308
   ],
   "end_xy": [
    293082.4616073987,
    108630.10371189156
   ]
  },
  "max_20m": {
   "gradient_pct": 25.21699442274297,
   "start_distance_m": 252.0,
   "end_distance_m": 272.0,
   "midpoint_distance_m": 262.0,
   "start_elevation_m": 89.50998906684808,
   "end_elevation_m": 94.55338795139667,
   "start_xy": [
    293074.1411240595,
    108624.55668052308
   ],
   "end_xy": [
    293090.2310361696,
    108636.30372500434
   ]
  },
  "max_25m": {
   "gradient_pct": 25.039984185895037,
   "start_distance_m": 252.0,
   "end_distance_m": 277.0,
   "midpoint_distance_m": 264.5,
   "start_elevation_m": 89.50998906684808,
   "end_elevation_m": 95.76998511332184,
   "start_xy": [
    293074.1411240595,
    108624.55668052308
   ],
   "end_xy": [
    293093.664437565,
    108639.93852277841
   ]
  },
  "max_50m": {
   "gradient_pct": 24.125424901793735,
   "start_distance_m": 232.0,
   "end_distance_m": 282.0,
   "midpoint_distance_m": 257.0,
   "start_elevation_m": 84.85993669669766,
   "end_elevation_m": 96.92264914759453,
   "start_xy": [
    293057.50015738123,
    108613.4626177861
   ],
   "end_xy": [
    293095.5005211071,
    108644.49223648217
   ]
  },
  "max_100m": {
   "gradient_pct": 23.137025298707115,
   "start_distance_m": 199.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 249.0,
   "start_elevation_m": 77.37923369679403,
   "end_elevation_m": 100.51625899550115,
   "start_xy": [
    293030.04256236204,
    108595.15741427013
   ],
   "end_xy": [
    293097.4320938192,
    108661.22910143835
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -19.54062900216286,
   "start_distance_m": 114.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 116.5,
   "start_elevation_m": 72.32153959643631,
   "end_elevation_m": 71.34450814632817,
   "start_xy": [
    293060.62837049016,
    108526.8656991059
   ],
   "end_xy": [
    293057.34689135524,
    108530.63821745402
   ]
  },
  "min_10m": {
   "gradient_pct": -10.506594796565878,
   "start_distance_m": 629.0,
   "end_distance_m": 639.0,
   "midpoint_distance_m": 634.0,
   "start_elevation_m": 148.61399054570273,
   "end_elevation_m": 147.56333106604615,
   "start_xy": [
    293215.9526806539,
    108832.96276723852
   ],
   "end_xy": [
    293221.5619674361,
    108841.21948713293
   ]
  },
  "min_20m": {
   "gradient_pct": -6.723489396773346,
   "start_distance_m": 620.0,
   "end_distance_m": 640.0,
   "midpoint_distance_m": 630.0,
   "start_elevation_m": 148.9071624331425,
   "end_elevation_m": 147.56246455378783,
   "start_xy": [
    293210.2334028387,
    108826.04874151862
   ],
   "end_xy": [
    293222.3669654532,
    108841.81276463332
   ]
  },
  "min_25m": {
   "gradient_pct": -5.384755501079667,
   "start_distance_m": 620.0,
   "end_distance_m": 645.0,
   "midpoint_distance_m": 632.5,
   "start_elevation_m": 148.9071624331425,
   "end_elevation_m": 147.5609735578726,
   "start_xy": [
    293210.2334028387,
    108826.04874151862
   ],
   "end_xy": [
    293226.3919555387,
    108844.77915213529
   ]
  },
  "min_50m": {
   "gradient_pct": 0.12916666517077147,
   "start_distance_m": 607.0,
   "end_distance_m": 657.0,
   "midpoint_distance_m": 632.0,
   "start_elevation_m": 148.08595403189497,
   "end_elevation_m": 148.15053736448036,
   "start_xy": [
    293198.2972885404,
    108821.50744403916
   ],
   "end_xy": [
    293237.3638936875,
    108849.09022822112
   ]
  },
  "min_100m": {
   "gradient_pct": 4.62337894159819,
   "start_distance_m": 93.0,
   "end_distance_m": 193.0,
   "midpoint_distance_m": 143.0,
   "start_elevation_m": 71.67139618469693,
   "end_elevation_m": 76.29477512629512,
   "start_xy": [
    293063.69222688366,
    108507.69943605953
   ],
   "end_xy": [
    293025.0502723585,
    108591.82919544904
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 30.565366413617312,
   "start_distance_m": 368.0,
   "end_distance_m": 370.0,
   "midpoint_distance_m": 369.0,
   "start_elevation_m": 111.89797157420374,
   "end_elevation_m": 112.50927890247608,
   "start_xy": [
    293076.91961073276,
    108724.62874993018
   ],
   "end_xy": [
    293075.61675029167,
    108726.14616703536
   ]
  },
  "max_3m": {
   "gradient_pct": 27.2340273401151,
   "start_distance_m": 255.0,
   "end_distance_m": 258.0,
   "midpoint_distance_m": 256.5,
   "start_elevation_m": 90.27184644791109,
   "end_elevation_m": 91.08886726811454,
   "start_xy": [
    293076.6372690613,
    108626.22078993362
   ],
   "end_xy": [
    293079.133414063,
    108627.88489934416
   ]
  }
 },
 "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": 0.045,
   "obstruction_max_height_m": 13.12,
   "flagged_windows_m": [
    50,
    100
   ]
  },
  "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/SS9005.tif"
  ],
  "calculated_at": "2026-09-05T02:09:10+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-04.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": [
   "SS9005.tif"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Cadeleigh",
  "county": "Devon"
 }
}