{ "ocl_version": "0.1.0", "name": "Discovered lane (53.6502, -1.9277)", "slug": "discovered-lane-53-6502-1-9277", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 39.83457131224668, "diagnostic": true, "flags": [], "start_distance_m": 127.0, "end_distance_m": 129.0, "start_elevation_m": 253.96577148362041, "end_elevation_m": 254.76246290986535, "min_gradient_pct": -9.644189822077465 }, { "window_m": 3.0, "max_gradient_pct": 37.0241599047849, "diagnostic": true, "flags": [], "start_distance_m": 127.0, "end_distance_m": 130.0, "start_elevation_m": 253.96577148362041, "end_elevation_m": 255.07649628076396, "min_gradient_pct": -4.248255059779164 }, { "window_m": 5.0, "max_gradient_pct": 31.72674735275166, "diagnostic": false, "flags": [], "start_distance_m": 125.0, "end_distance_m": 130.0, "start_elevation_m": 253.49015891312638, "end_elevation_m": 255.07649628076396, "min_gradient_pct": -3.319616153971765 }, { "window_m": 10.0, "max_gradient_pct": 25.34177497600041, "diagnostic": false, "flags": [], "start_distance_m": 122.0, "end_distance_m": 132.0, "start_elevation_m": 252.9134743482666, "end_elevation_m": 255.44765184586663, "min_gradient_pct": -0.6614768503266077 }, { "window_m": 20.0, "max_gradient_pct": 22.72605677120069, "diagnostic": false, "flags": [], "start_distance_m": 54.0, "end_distance_m": 74.0, "start_elevation_m": 240.2750960521772, "end_elevation_m": 244.82030740641733, "min_gradient_pct": 0.08519284558190066 }, { "window_m": 25.0, "max_gradient_pct": 22.174215297828027, "diagnostic": false, "flags": [], "start_distance_m": 56.0, "end_distance_m": 81.0, "start_elevation_m": 240.6237837639207, "end_elevation_m": 246.1673375883777, "min_gradient_pct": 0.48786378811041686 }, { "window_m": 50.0, "max_gradient_pct": 20.113747888657997, "diagnostic": false, "flags": [], "start_distance_m": 54.0, "end_distance_m": 104.0, "start_elevation_m": 240.2750960521772, "end_elevation_m": 250.3319699965062, "min_gradient_pct": 1.7382771810839586 }, { "window_m": 100.0, "max_gradient_pct": 18.259756297839402, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 45.0, "end_distance_m": 145.0, "start_elevation_m": 239.03695567887056, "end_elevation_m": 257.29671197670996, "min_gradient_pct": 1.8979702622628452 } ], "shape": { "ascent_concentration": 0.403, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 145.0, "shape_class": "sustained" }, "length_m": 809.8384182824728, "start_elevation_m": 234.60645730163543, "end_elevation_m": 313.19781935821675, "endpoint_gain_m": 78.59136205658132, "overall_gradient_pct": 9.704573194151495, "accumulated_ascent_m": 79.28657179495028, "window_maxima": { "max_5m": { "gradient_pct": 31.72674735275166, "start_distance_m": 125.0, "end_distance_m": 130.0, "midpoint_distance_m": 127.5, "start_elevation_m": 253.49015891312638, "end_elevation_m": 255.07649628076396, "start_xy": [ 405085.003785749, 417186.70558184665 ], "end_xy": [ 405080.4234369073, 417188.71067647985 ] }, "max_10m": { "gradient_pct": 25.34177497600041, "start_distance_m": 122.0, "end_distance_m": 132.0, "midpoint_distance_m": 127.0, "start_elevation_m": 252.9134743482666, "end_elevation_m": 255.44765184586663, "start_xy": [ 405087.751995054, 417185.5025250667 ], "end_xy": [ 405078.58083702176, 417189.4734494315 ] }, "max_20m": { "gradient_pct": 22.72605677120069, "start_distance_m": 54.0, "end_distance_m": 74.0, "midpoint_distance_m": 64.0, "start_elevation_m": 240.2750960521772, "end_elevation_m": 244.82030740641733, "start_xy": [ 405130.28793845244, 417140.501611548 ], "end_xy": [ 405112.4929269705, 417144.7556645388 ] }, "max_25m": { "gradient_pct": 22.174215297828027, "start_distance_m": 56.0, "end_distance_m": 81.0, "midpoint_distance_m": 68.5, "start_elevation_m": 240.6237837639207, "end_elevation_m": 246.1673375883777, "start_xy": [ 405128.2897301157, 417140.58624867327 ], "end_xy": [ 405109.31061970297, 417150.99047972896 ] }, "max_50m": { "gradient_pct": 20.113747888657997, "start_distance_m": 54.0, "end_distance_m": 104.0, "midpoint_distance_m": 79.0, "start_elevation_m": 240.2750960521772, "end_elevation_m": 250.3319699965062, "start_xy": [ 405130.28793845244, 417140.501611548 ], "end_xy": [ 405098.8073676358, 417171.45057325216 ] }, "max_100m": { "gradient_pct": 18.259756297839402, "start_distance_m": 45.0, "end_distance_m": 145.0, "midpoint_distance_m": 95.0, "start_elevation_m": 239.03695567887056, "end_elevation_m": 257.29671197670996, "start_xy": [ 405139.27987596777, 417140.1207444845 ], "end_xy": [ 405065.6608383051, 417190.5662593795 ] } }, "window_minima": { "min_5m": { "gradient_pct": -3.319616153971765, "start_distance_m": 167.0, "end_distance_m": 172.0, "midpoint_distance_m": 169.5, "start_elevation_m": 260.04611659877605, "end_elevation_m": 259.88013579107746, "start_xy": [ 405045.1378344542, 417183.700506297 ], "end_xy": [ 405041.5430958513, 417180.2251855381 ] }, "min_10m": { "gradient_pct": -0.6614768503266077, "start_distance_m": 548.0, "end_distance_m": 558.0, "midpoint_distance_m": 553.0, "start_elevation_m": 295.74025859261883, "end_elevation_m": 295.67411090758617, "start_xy": [ 404899.8397060885, 417234.26689512044 ], "end_xy": [ 404902.25070213457, 417243.86802165303 ] }, "min_20m": { "gradient_pct": 0.08519284558190066, "start_distance_m": 539.0, "end_distance_m": 559.0, "midpoint_distance_m": 549.0, "start_elevation_m": 295.662649690692, "end_elevation_m": 295.67968825980836, "start_xy": [ 404898.75203820615, 417225.3328602774 ], "end_xy": [ 404902.6471885683, 417244.7860622338 ] }, "min_25m": { "gradient_pct": 0.48786378811041686, "start_distance_m": 593.0, "end_distance_m": 618.0, "midpoint_distance_m": 605.5, "start_elevation_m": 296.86039820771384, "end_elevation_m": 296.98236415474145, "start_xy": [ 404916.12772731436, 417275.9994419789 ], "end_xy": [ 404926.8957376547, 417298.5570130039 ] }, "min_50m": { "gradient_pct": 1.7382771810839586, "start_distance_m": 576.0, "end_distance_m": 626.0, "midpoint_distance_m": 601.0, "start_elevation_m": 296.33955100697597, "end_elevation_m": 297.20868959751795, "start_xy": [ 404909.38745794137, 417260.39275210636 ], "end_xy": [ 404930.405511483, 417305.7459967554 ] }, "min_100m": { "gradient_pct": 1.8979702622628452, "start_distance_m": 527.0, "end_distance_m": 627.0, "midpoint_distance_m": 577.0, "start_elevation_m": 295.35295812379064, "end_elevation_m": 297.2509283860535, "start_xy": [ 404897.30181436293, 417213.4208138199 ], "end_xy": [ 404930.8443003626, 417306.6445869396 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 39.83457131224668, "start_distance_m": 127.0, "end_distance_m": 129.0, "midpoint_distance_m": 128.0, "start_elevation_m": 253.96577148362041, "end_elevation_m": 254.76246290986535, "start_xy": [ 405083.17164621234, 417187.5076196999 ], "end_xy": [ 405081.3395066756, 417188.3096575532 ] }, "max_3m": { "gradient_pct": 37.0241599047849, "start_distance_m": 127.0, "end_distance_m": 130.0, "midpoint_distance_m": 128.5, "start_elevation_m": 253.96577148362041, "end_elevation_m": 255.07649628076396, "start_xy": [ 405083.17164621234, 417187.5076196999 ], "end_xy": [ 405080.4234369073, 417188.71067647985 ] } }, "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": 0.113, "obstruction_max_height_m": 15.92, "flagged_windows_m": [ 100 ] }, "review": [], "extent": [ "may_start_earlier" ] }, "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/SE0015.tif", "data/cache/england/bulk_dtm_1m/SE0515.tif" ], "calculated_at": "2026-09-05T01:14:35+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-09.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": [ "SE0015.tif", "SE0515.tif" ], "climb_origin": "discovered", "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Hey House Clough", "county": "" } }