{
 "ocl_version": "0.1.0",
 "name": "Black Head to Shepherd's Hill",
 "slug": "discovered-lane-54-8662-5-1351",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 41.324330790036434,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 50.0,
   "end_distance_m": 52.0,
   "start_elevation_m": 20.261493281842395,
   "end_elevation_m": 21.087979897643123,
   "min_gradient_pct": -96.1608532030862,
   "suppressed_max_gradient_pct": 80.64980780198923,
   "suppressed_location_m": [
    512.0,
    514.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.80358924429415,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 39.0,
   "end_distance_m": 42.0,
   "start_elevation_m": 18.331806486150448,
   "end_elevation_m": 19.375914163479273,
   "min_gradient_pct": -62.2049925871328,
   "suppressed_max_gradient_pct": 73.460157750475,
   "suppressed_location_m": [
    512.0,
    515.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.06656637319895,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 39.0,
   "end_distance_m": 44.0,
   "start_elevation_m": 18.331806486150448,
   "end_elevation_m": 19.935134804810396,
   "min_gradient_pct": -35.22036465417969,
   "suppressed_max_gradient_pct": 47.45590902364597,
   "suppressed_location_m": [
    511.0,
    516.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.613665873032772,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 36.0,
   "end_distance_m": 46.0,
   "start_elevation_m": 17.709824766120803,
   "end_elevation_m": 20.37119135342408,
   "min_gradient_pct": -14.909290991961512,
   "suppressed_max_gradient_pct": 27.593269484809685,
   "suppressed_location_m": [
    506.0,
    516.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.582721048270358,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 25.0,
   "end_distance_m": 45.0,
   "start_elevation_m": 15.656224821966873,
   "end_elevation_m": 20.172769031620945,
   "min_gradient_pct": -9.788439825624078
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.856298596950356,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 20.0,
   "end_distance_m": 45.0,
   "start_elevation_m": 14.708694382383356,
   "end_elevation_m": 20.172769031620945,
   "min_gradient_pct": -9.192154858658569
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.981727042795363,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2.0,
   "end_distance_m": 52.0,
   "start_elevation_m": 11.097116376245442,
   "end_elevation_m": 21.087979897643123,
   "min_gradient_pct": -6.936168413175544
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.02279759055981,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "start_elevation_m": 10.572396301884107,
   "end_elevation_m": 24.595193892443916,
   "min_gradient_pct": -4.4298039194273215
  }
 ],
 "shape": {
  "ascent_concentration": 0.338,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 70.0,
  "shape_class": "sustained"
 },
 "length_m": 1895.9999999999686,
 "start_elevation_m": 10.572396301884107,
 "end_elevation_m": 112.89151315378388,
 "endpoint_gain_m": 102.31911685189976,
 "overall_gradient_pct": 5.396577893032777,
 "accumulated_ascent_m": 120.46436670032064,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.06656637319895,
   "start_distance_m": 39.0,
   "end_distance_m": 44.0,
   "midpoint_distance_m": 41.5,
   "start_elevation_m": 18.331806486150448,
   "end_elevation_m": 19.935134804810396,
   "start_xy": [
    198268.06224297275,
    556475.1491655825
   ],
   "end_xy": [
    198271.63860352171,
    556478.6433958588
   ]
  },
  "max_10m": {
   "gradient_pct": 26.613665873032772,
   "start_distance_m": 36.0,
   "end_distance_m": 46.0,
   "midpoint_distance_m": 41.0,
   "start_elevation_m": 17.709824766120803,
   "end_elevation_m": 20.37119135342408,
   "start_xy": [
    198265.9164266434,
    556473.0526274168
   ],
   "end_xy": [
    198273.0263470198,
    556480.0604308659
   ]
  },
  "max_20m": {
   "gradient_pct": 22.582721048270358,
   "start_distance_m": 25.0,
   "end_distance_m": 45.0,
   "midpoint_distance_m": 35.0,
   "start_elevation_m": 15.656224821966873,
   "end_elevation_m": 20.172769031620945,
   "start_xy": [
    198258.04843343573,
    556465.3653208088
   ],
   "end_xy": [
    198272.3538756315,
    556479.3422419141
   ]
  },
  "max_25m": {
   "gradient_pct": 21.856298596950356,
   "start_distance_m": 20.0,
   "end_distance_m": 45.0,
   "midpoint_distance_m": 32.5,
   "start_elevation_m": 14.708694382383356,
   "end_elevation_m": 20.172769031620945,
   "start_xy": [
    198254.47207288677,
    556461.8710905325
   ],
   "end_xy": [
    198272.3538756315,
    556479.3422419141
   ]
  },
  "max_50m": {
   "gradient_pct": 19.981727042795363,
   "start_distance_m": 2.0,
   "end_distance_m": 52.0,
   "midpoint_distance_m": 27.0,
   "start_elevation_m": 11.097116376245442,
   "end_elevation_m": 21.087979897643123,
   "start_xy": [
    198242.79924946596,
    556448.2532671883
   ],
   "end_xy": [
    198273.33761208018,
    556486.0523515982
   ]
  },
  "max_100m": {
   "gradient_pct": 14.02279759055981,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 10.572396301884107,
   "end_elevation_m": 24.595193892443916,
   "start_xy": [
    198241.624,
    556446.635
   ],
   "end_xy": [
    198283.98743728822,
    556530.743205342
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -35.22036465417969,
   "start_distance_m": 517.0,
   "end_distance_m": 522.0,
   "midpoint_distance_m": 519.5,
   "start_elevation_m": 37.95526423794526,
   "end_elevation_m": 36.19424600523627,
   "start_xy": [
    198421.3843029148,
    556845.1823709244
   ],
   "end_xy": [
    198425.6997345328,
    556847.7076530771
   ]
  },
  "min_10m": {
   "gradient_pct": -14.909290991961512,
   "start_distance_m": 517.0,
   "end_distance_m": 527.0,
   "midpoint_distance_m": 522.0,
   "start_elevation_m": 37.95526423794526,
   "end_elevation_m": 36.46433513874911,
   "start_xy": [
    198421.3843029148,
    556845.1823709244
   ],
   "end_xy": [
    198430.01516615078,
    556850.2329352297
   ]
  },
  "min_20m": {
   "gradient_pct": -9.788439825624078,
   "start_distance_m": 207.0,
   "end_distance_m": 227.0,
   "midpoint_distance_m": 217.0,
   "start_elevation_m": 29.310543356354845,
   "end_elevation_m": 27.35285539123003,
   "start_xy": [
    198249.33288661722,
    556625.3176284144
   ],
   "end_xy": [
    198252.59406666804,
    556645.0499548021
   ]
  },
  "min_25m": {
   "gradient_pct": -9.192154858658569,
   "start_distance_m": 207.0,
   "end_distance_m": 232.0,
   "midpoint_distance_m": 219.5,
   "start_elevation_m": 29.310543356354845,
   "end_elevation_m": 27.012504641690203,
   "start_xy": [
    198249.33288661722,
    556625.3176284144
   ],
   "end_xy": [
    198253.40936168074,
    556649.9830363991
   ]
  },
  "min_50m": {
   "gradient_pct": -6.936168413175544,
   "start_distance_m": 207.0,
   "end_distance_m": 257.0,
   "midpoint_distance_m": 232.0,
   "start_elevation_m": 29.310543356354845,
   "end_elevation_m": 25.842459149767073,
   "start_xy": [
    198249.33288661722,
    556625.3176284144
   ],
   "end_xy": [
    198255.72891386953,
    556674.8442804635
   ]
  },
  "min_100m": {
   "gradient_pct": -4.4298039194273215,
   "start_distance_m": 207.0,
   "end_distance_m": 307.0,
   "midpoint_distance_m": 257.0,
   "start_elevation_m": 29.310543356354845,
   "end_elevation_m": 24.880739436927524,
   "start_xy": [
    198249.33288661722,
    556625.3176284144
   ],
   "end_xy": [
    198250.8329716277,
    556724.1954166857
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 41.324330790036434,
   "start_distance_m": 50.0,
   "end_distance_m": 52.0,
   "midpoint_distance_m": 51.0,
   "start_elevation_m": 20.261493281842395,
   "end_elevation_m": 21.087979897643123,
   "start_xy": [
    198273.23385706006,
    556484.0550446874
   ],
   "end_xy": [
    198273.33761208018,
    556486.0523515982
   ]
  },
  "max_3m": {
   "gradient_pct": 34.80358924429415,
   "start_distance_m": 39.0,
   "end_distance_m": 42.0,
   "midpoint_distance_m": 40.5,
   "start_elevation_m": 18.331806486150448,
   "end_elevation_m": 19.375914163479273,
   "start_xy": [
    198268.06224297275,
    556475.1491655825
   ],
   "end_xy": [
    198270.20805930212,
    556477.2457037483
   ]
  }
 },
 "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": 0.003,
   "obstruction_max_height_m": 5.46,
   "flagged_windows_m": []
  },
  "structure_suppression": {
   "masked_fraction": 0.006,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    510.0,
    521.0
   ]
  ],
  "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": 0.5,
  "elevation_tiles": [
   "data/cache/scotland/phase-3/dtm/NW95NE.tif"
  ],
  "calculated_at": "2026-08-18T18:37:19+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/scotland-2026-08-14-roads.osm.pbf",
  "osm_snapshot": "2026-08-13T20:21:01Z",
  "elevation_provider": "Scottish Remote Sensing Portal (AWS Open Data, srsp-open-data)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Scottish Government, SEPA and partners; Crown copyright",
  "elevation_dataset": "Scottish Public Sector LiDAR Phase 3 50cm",
  "elevation_tile_ids": [
   "NW95NE"
  ],
  "route_summit_trim_m": 406.7,
  "route_summit_trim_loss_m": 9.7,
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 9.4% over 200 m (Terrain 50), gain 73.3 m over 2117 m way. EXTENDED by graph walk: +2 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. ADOPTED (Scotland launch 2026-08-18): clean-steep. AUTO-NAMED from gazetteer (hypothesis, unreviewed): was 'Discovered lane (54.8662, -5.1351)'.",
  "naming_note": "auto-named from gazetteer (hypothesis, unreviewed); discovered as 'Discovered lane (54.8662, -5.1351)'"
 },
 "area": {
  "place": "Craig Anthony",
  "county": "Dumfries and Galloway"
 }
}