{
 "ocl_version": "0.1.0",
 "name": "Cnoc na Gr\u00e8ine to Achnaslishaig Hill",
 "slug": "discovered-lane-55-3601-5-7107",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 52.89233837992171,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 356.0,
   "end_distance_m": 358.0,
   "start_elevation_m": 94.73736922347489,
   "end_elevation_m": 95.79521599107332,
   "min_gradient_pct": -31.729251436541972
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 47.59469795451423,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 355.0,
   "end_distance_m": 358.0,
   "start_elevation_m": 94.3673750524379,
   "end_elevation_m": 95.79521599107332,
   "min_gradient_pct": -28.39311724279412
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 38.168006331898994,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 353.0,
   "end_distance_m": 358.0,
   "start_elevation_m": 93.88681567447837,
   "end_elevation_m": 95.79521599107332,
   "min_gradient_pct": -24.69489649775028
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 29.24624854386593,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 353.0,
   "end_distance_m": 363.0,
   "start_elevation_m": 93.88681567447837,
   "end_elevation_m": 96.81144052886496,
   "min_gradient_pct": -14.773383554749273
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.80756926274759,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 412.0,
   "end_distance_m": 432.0,
   "start_elevation_m": 104.99407241116964,
   "end_elevation_m": 110.15558626371916,
   "min_gradient_pct": -9.933400720437362
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.893616980740944,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 407.0,
   "end_distance_m": 432.0,
   "start_elevation_m": 103.68218201853392,
   "end_elevation_m": 110.15558626371916,
   "min_gradient_pct": -8.946898506913726
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.306105805133626,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 407.0,
   "end_distance_m": 457.0,
   "start_elevation_m": 103.68218201853392,
   "end_elevation_m": 114.33523492110074,
   "min_gradient_pct": -4.673260258983987
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.768146613495944,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 344.0,
   "end_distance_m": 444.0,
   "start_elevation_m": 92.32275467154774,
   "end_elevation_m": 112.09090128504369,
   "min_gradient_pct": -4.174534431985023
  }
 ],
 "shape": {
  "ascent_concentration": 0.414,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 95.0,
  "shape_class": "sustained"
 },
 "length_m": 1047.9999999999866,
 "start_elevation_m": 57.40825393470759,
 "end_elevation_m": 156.98908810729694,
 "endpoint_gain_m": 99.58083417258935,
 "overall_gradient_pct": 9.501987993567807,
 "accumulated_ascent_m": 108.95754809087525,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 38.168006331898994,
   "start_distance_m": 353.0,
   "end_distance_m": 358.0,
   "midpoint_distance_m": 355.5,
   "start_elevation_m": 93.88681567447837,
   "end_elevation_m": 95.79521599107332,
   "start_xy": [
    164559.98560190943,
    613431.935072896
   ],
   "end_xy": [
    164558.92002970722,
    613436.8202091153
   ]
  },
  "max_10m": {
   "gradient_pct": 29.24624854386593,
   "start_distance_m": 353.0,
   "end_distance_m": 363.0,
   "midpoint_distance_m": 358.0,
   "start_elevation_m": 93.88681567447837,
   "end_elevation_m": 96.81144052886496,
   "start_xy": [
    164559.98560190943,
    613431.935072896
   ],
   "end_xy": [
    164557.854457505,
    613441.7053453347
   ]
  },
  "max_20m": {
   "gradient_pct": 25.80756926274759,
   "start_distance_m": 412.0,
   "end_distance_m": 432.0,
   "midpoint_distance_m": 422.0,
   "start_elevation_m": 104.99407241116964,
   "end_elevation_m": 110.15558626371916,
   "start_xy": [
    164549.36807975912,
    613489.7336043753
   ],
   "end_xy": [
    164564.3878241698,
    613500.1275752838
   ]
  },
  "max_25m": {
   "gradient_pct": 25.893616980740944,
   "start_distance_m": 407.0,
   "end_distance_m": 432.0,
   "midpoint_distance_m": 419.5,
   "start_elevation_m": 103.68218201853392,
   "end_elevation_m": 110.15558626371916,
   "start_xy": [
    164549.1432953121,
    613484.76033649
   ],
   "end_xy": [
    164564.3878241698,
    613500.1275752838
   ]
  },
  "max_50m": {
   "gradient_pct": 21.306105805133626,
   "start_distance_m": 407.0,
   "end_distance_m": 457.0,
   "midpoint_distance_m": 432.0,
   "start_elevation_m": 103.68218201853392,
   "end_elevation_m": 114.33523492110074,
   "start_xy": [
    164549.1432953121,
    613484.76033649
   ],
   "end_xy": [
    164589.1814649384,
    613503.3330982423
   ]
  },
  "max_100m": {
   "gradient_pct": 19.768146613495944,
   "start_distance_m": 344.0,
   "end_distance_m": 444.0,
   "midpoint_distance_m": 394.0,
   "start_elevation_m": 92.32275467154774,
   "end_elevation_m": 112.09090128504369,
   "start_xy": [
    164561.90363187343,
    613423.1418277011
   ],
   "end_xy": [
    164576.2887717387,
    613501.6662263039
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -24.69489649775028,
   "start_distance_m": 873.0,
   "end_distance_m": 878.0,
   "midpoint_distance_m": 875.5,
   "start_elevation_m": 155.27160286189488,
   "end_elevation_m": 154.03685803700736,
   "start_xy": [
    164948.29969483352,
    613655.0330614059
   ],
   "end_xy": [
    164951.4314957732,
    613658.9307303084
   ]
  },
  "min_10m": {
   "gradient_pct": -14.773383554749273,
   "start_distance_m": 868.0,
   "end_distance_m": 878.0,
   "midpoint_distance_m": 873.0,
   "start_elevation_m": 155.5141963924823,
   "end_elevation_m": 154.03685803700736,
   "start_xy": [
    164945.1678938938,
    613651.1353925032
   ],
   "end_xy": [
    164951.4314957732,
    613658.9307303084
   ]
  },
  "min_20m": {
   "gradient_pct": -9.933400720437362,
   "start_distance_m": 858.0,
   "end_distance_m": 878.0,
   "midpoint_distance_m": 868.0,
   "start_elevation_m": 156.02353818109484,
   "end_elevation_m": 154.03685803700736,
   "start_xy": [
    164938.48765572088,
    613643.694429328
   ],
   "end_xy": [
    164951.4314957732,
    613658.9307303084
   ]
  },
  "min_25m": {
   "gradient_pct": -8.946898506913726,
   "start_distance_m": 853.0,
   "end_distance_m": 878.0,
   "midpoint_distance_m": 865.5,
   "start_elevation_m": 156.2735826637358,
   "end_elevation_m": 154.03685803700736,
   "start_xy": [
    164935.14302097165,
    613639.9777885873
   ],
   "end_xy": [
    164951.4314957732,
    613658.9307303084
   ]
  },
  "min_50m": {
   "gradient_pct": -4.673260258983987,
   "start_distance_m": 851.0,
   "end_distance_m": 901.0,
   "midpoint_distance_m": 876.0,
   "start_elevation_m": 156.36469030023582,
   "end_elevation_m": 154.02806017074383,
   "start_xy": [
    164933.80516707196,
    613638.4911322912
   ],
   "end_xy": [
    164965.75420158755,
    613676.915905018
   ]
  },
  "min_100m": {
   "gradient_pct": -4.174534431985023,
   "start_distance_m": 841.0,
   "end_distance_m": 941.0,
   "midpoint_distance_m": 891.0,
   "start_elevation_m": 156.31730613297066,
   "end_elevation_m": 152.14277170098563,
   "start_xy": [
    164927.1158975735,
    613631.05785081
   ],
   "end_xy": [
    164983.14056718315,
    613712.7978027164
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 52.89233837992171,
   "start_distance_m": 356.0,
   "end_distance_m": 358.0,
   "midpoint_distance_m": 357.0,
   "start_elevation_m": 94.73736922347489,
   "end_elevation_m": 95.79521599107332,
   "start_xy": [
    164559.3462585881,
    613434.8661546275
   ],
   "end_xy": [
    164558.92002970722,
    613436.8202091153
   ]
  },
  "max_3m": {
   "gradient_pct": 47.59469795451423,
   "start_distance_m": 355.0,
   "end_distance_m": 358.0,
   "midpoint_distance_m": 356.5,
   "start_elevation_m": 94.3673750524379,
   "end_elevation_m": 95.79521599107332,
   "start_xy": [
    164559.55937302855,
    613433.8891273837
   ],
   "end_xy": [
    164558.92002970722,
    613436.8202091153
   ]
  }
 },
 "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": 0.07,
   "obstruction_max_height_m": 12.51,
   "flagged_windows_m": [
    2,
    3,
    5,
    10
   ]
  },
  "review": [
   "short_window_divergence"
  ],
  "extent": []
 },
 "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/national-lidar-programme/dtm/NR6413.tif",
   "data/cache/scotland/national-lidar-programme/dtm/NR6513.tif",
   "data/cache/scotland/national-lidar-programme/dtm/NR6514.tif"
  ],
  "calculated_at": "2026-08-19T17:31:31+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/scotland-2026-08-14.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 National LiDAR Programme 50cm",
  "elevation_tile_ids": [
   "NR6413",
   "NR6513",
   "NR6514"
  ],
  "route_summit_trim_m": 699.9,
  "route_summit_trim_loss_m": 32.3,
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 17.7% over 200 m (Terrain 50), gain 71.1 m over 1748 m way. KEPT at seed extent: no ascending continuation (min_avg=2.0%). ADOPTED (Scotland launch 2026-08-18): clean-steep. AUTO-NAMED from gazetteer (hypothesis, unreviewed): was 'Discovered lane (55.3601, -5.7107)'.",
  "naming_note": "auto-named from gazetteer (hypothesis, unreviewed); discovered as 'Discovered lane (55.3601, -5.7107)'",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Glen Remuil",
  "county": "Argyll and Bute"
 }
}