{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-35.2142, 174.0449)",
 "slug": "discovered-lane-35-2142-174-0449",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 40.562034960811744,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 236.0,
   "end_distance_m": 238.0,
   "start_elevation_m": 62.71560116724393,
   "end_elevation_m": 63.52684186646017,
   "min_gradient_pct": -2.3645711541959713
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.61814457993905,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 227.0,
   "end_distance_m": 230.0,
   "start_elevation_m": 60.11395493893751,
   "end_elevation_m": 61.15249927633568,
   "min_gradient_pct": -1.5653734584393675
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.50091513152745,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 232.0,
   "end_distance_m": 237.0,
   "start_elevation_m": 61.63662529098973,
   "end_elevation_m": 63.2116710475661,
   "min_gradient_pct": -0.5169366124574282
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 31.29364432889389,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 228.0,
   "end_distance_m": 238.0,
   "start_elevation_m": 60.39747743357078,
   "end_elevation_m": 63.52684186646017,
   "min_gradient_pct": -0.254495732376796
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 28.8755328101032,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 227.0,
   "end_distance_m": 247.0,
   "start_elevation_m": 60.11395493893751,
   "end_elevation_m": 65.88906150095815,
   "min_gradient_pct": -0.02937194641045693
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 28.432706181853945,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 223.0,
   "end_distance_m": 248.0,
   "start_elevation_m": 59.046916821669974,
   "end_elevation_m": 66.15509336713346,
   "min_gradient_pct": 0.384230340939979
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 26.164321774706597,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 211.0,
   "end_distance_m": 261.0,
   "start_elevation_m": 56.1512405576148,
   "end_elevation_m": 69.2334014449681,
   "min_gradient_pct": 6.935668053915877
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 24.502647225740162,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 204.0,
   "end_distance_m": 304.0,
   "start_elevation_m": 54.76359703712561,
   "end_elevation_m": 79.26624426286577,
   "min_gradient_pct": 12.020532239011231
  }
 ],
 "shape": {
  "ascent_concentration": 0.363,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 282.0,
  "shape_class": "sustained"
 },
 "length_m": 309.6912055618211,
 "start_elevation_m": 26.195170747762475,
 "end_elevation_m": 79.89623102242723,
 "endpoint_gain_m": 53.701060274664755,
 "overall_gradient_pct": 17.340195430233116,
 "accumulated_ascent_m": 53.896966850064054,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.50091513152745,
   "start_distance_m": 232.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 234.5,
   "start_elevation_m": 61.63662529098973,
   "end_elevation_m": 63.2116710475661,
   "start_xy": [
    1695185.116754709,
    6102732.743221673
   ],
   "end_xy": [
    1695189.5082348816,
    6102735.133807772
   ]
  },
  "max_10m": {
   "gradient_pct": 31.29364432889389,
   "start_distance_m": 228.0,
   "end_distance_m": 238.0,
   "midpoint_distance_m": 233.0,
   "start_elevation_m": 60.39747743357078,
   "end_elevation_m": 63.52684186646017,
   "start_xy": [
    1695181.6035705712,
    6102730.830752795
   ],
   "end_xy": [
    1695190.386530916,
    6102735.611924992
   ]
  },
  "max_20m": {
   "gradient_pct": 28.8755328101032,
   "start_distance_m": 227.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 237.0,
   "start_elevation_m": 60.11395493893751,
   "end_elevation_m": 65.88906150095815,
   "start_xy": [
    1695180.7252745368,
    6102730.3526355745
   ],
   "end_xy": [
    1695198.2911952264,
    6102739.91497997
   ]
  },
  "max_25m": {
   "gradient_pct": 28.432706181853945,
   "start_distance_m": 223.0,
   "end_distance_m": 248.0,
   "midpoint_distance_m": 235.5,
   "start_elevation_m": 59.046916821669974,
   "end_elevation_m": 66.15509336713346,
   "start_xy": [
    1695177.2120903989,
    6102728.440166696
   ],
   "end_xy": [
    1695199.1694912608,
    6102740.393097189
   ]
  },
  "max_50m": {
   "gradient_pct": 26.164321774706597,
   "start_distance_m": 211.0,
   "end_distance_m": 261.0,
   "midpoint_distance_m": 236.0,
   "start_elevation_m": 56.1512405576148,
   "end_elevation_m": 69.2334014449681,
   "start_xy": [
    1695166.672537985,
    6102722.702760058
   ],
   "end_xy": [
    1695210.6789438182,
    6102746.436378045
   ]
  },
  "max_100m": {
   "gradient_pct": 24.502647225740162,
   "start_distance_m": 204.0,
   "end_distance_m": 304.0,
   "midpoint_distance_m": 254.0,
   "start_elevation_m": 54.76359703712561,
   "end_elevation_m": 79.26624426286577,
   "start_xy": [
    1695160.5244657437,
    6102719.3559395205
   ],
   "end_xy": [
    1695250.369044226,
    6102762.59540795
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.5169366124574282,
   "start_distance_m": 4.0,
   "end_distance_m": 9.0,
   "midpoint_distance_m": 6.5,
   "start_elevation_m": 26.2193491911056,
   "end_elevation_m": 26.19350236048273,
   "start_xy": [
    1694969.3729981645,
    6102708.318994914
   ],
   "end_xy": [
    1694974.00049587,
    6102710.212738558
   ]
  },
  "min_10m": {
   "gradient_pct": -0.254495732376796,
   "start_distance_m": 4.0,
   "end_distance_m": 14.0,
   "midpoint_distance_m": 9.0,
   "start_elevation_m": 26.2193491911056,
   "end_elevation_m": 26.19389961786792,
   "start_xy": [
    1694969.3729981645,
    6102708.318994914
   ],
   "end_xy": [
    1694978.6279935753,
    6102712.1064822
   ]
  },
  "min_20m": {
   "gradient_pct": -0.02937194641045693,
   "start_distance_m": 1.0,
   "end_distance_m": 21.0,
   "midpoint_distance_m": 11.0,
   "start_elevation_m": 26.20063832263201,
   "end_elevation_m": 26.19476393334992,
   "start_xy": [
    1694966.596499541,
    6102707.182748728
   ],
   "end_xy": [
    1694985.106490363,
    6102714.757723302
   ]
  },
  "min_25m": {
   "gradient_pct": 0.384230340939979,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 26.195170747762475,
   "end_elevation_m": 26.29122833299747,
   "start_xy": [
    1694965.671,
    6102706.804
   ],
   "end_xy": [
    1694988.9274587648,
    6102715.82778836
   ]
  },
  "min_50m": {
   "gradient_pct": 6.935668053915877,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 26.195170747762475,
   "end_elevation_m": 29.663004774720413,
   "start_xy": [
    1694965.671,
    6102706.804
   ],
   "end_xy": [
    1695013.7029665133,
    6102719.170573996
   ]
  },
  "min_100m": {
   "gradient_pct": 12.020532239011231,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 26.195170747762475,
   "end_elevation_m": 38.21570298677371,
   "start_xy": [
    1694965.671,
    6102706.804
   ],
   "end_xy": [
    1695062.7190531974,
    6102717.762103154
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 40.562034960811744,
   "start_distance_m": 236.0,
   "end_distance_m": 238.0,
   "midpoint_distance_m": 237.0,
   "start_elevation_m": 62.71560116724393,
   "end_elevation_m": 63.52684186646017,
   "start_xy": [
    1695188.629938847,
    6102734.655690553
   ],
   "end_xy": [
    1695190.386530916,
    6102735.611924992
   ]
  },
  "max_3m": {
   "gradient_pct": 34.61814457993905,
   "start_distance_m": 227.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 228.5,
   "start_elevation_m": 60.11395493893751,
   "end_elevation_m": 61.15249927633568,
   "start_xy": [
    1695180.7252745368,
    6102730.3526355745
   ],
   "end_xy": [
    1695183.3601626402,
    6102731.786987234
   ]
  }
 },
 "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": 0.437,
   "obstruction_max_height_m": 8.84,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "f5ccc1713da600fbea2ba1433fb64f96644949ee",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "nz-n1",
   "road_pbf": "block-batch-nz-n1.osm.pbf",
   "region_key": "nz",
   "crs": "EPSG:2193",
   "elevation_provider_key": "nz-linz",
   "tile_index": "stac",
   "authority": "linz",
   "registry_pbf": "new-zealand-2026-09-26.osm.pbf",
   "tile_index_snapshot": "sha256:ff0dec6edae18a40"
  },
  "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:2193",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/nz/AV29.tiff"
  ],
  "calculated_at": "2026-09-28T05:05:17+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-n1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-n1",
  "elevation_provider": "LINZ nz-elevation",
  "elevation_licence": "CC BY 4.0 \u2014 Toit\u016b Te Whenua Land Information New Zealand \u2014 https://nz-elevation.s3.ap-southeast-2.amazonaws.com/LICENSE",
  "elevation_dataset": "New Zealand 1 m DEM/DSM national LiDAR mosaic \u2014 Toit\u016b Te Whenua Land Information New Zealand (LINZ), vertical datum NZVD2016 (LINZ documentation; not re-verified against a benchmark)",
  "elevation_tile_ids": [
   "AV29"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 19,
   "stations_resolved": 19,
   "width_median_m": 4.0,
   "width_p10_m": 2.7,
   "width_min_m": 1.5,
   "width_max_m": 9.5,
   "bounded_share": 0.158,
   "unbounded_share": 0.842,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.25,
   "window_m": [
    223.0,
    248.0
   ],
   "width_at_max25_m": 3.5,
   "window_stations": 7,
   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
   "station_m": 25.0,
   "window_station_m": 5.0,
   "halfwidth_m": 6.0,
   "step_m": 0.25,
   "level_tol_m": 0.12,
   "break_min_m": 0.3,
   "stations_failed": 0,
   "hedge_to_hedge": {
    "stations": 19,
    "stations_resolved": 19,
    "width_median_m": 1.75,
    "width_p10_m": 1.0,
    "width_min_m": 0.75,
    "width_max_m": 9.25,
    "bounded_share": 0.947,
    "unbounded_share": 0.053,
    "confidence_median": 1.0,
    "width_median_bounded_m": 1.5,
    "window_m": [
     223.0,
     248.0
    ],
    "width_at_max25_m": 2.0,
    "window_stations": 7,
    "status": "ok",
    "source": "dsm",
    "station_m": 25.0,
    "window_station_m": 5.0,
    "halfwidth_m": 6.0,
    "step_m": 0.25,
    "level_tol_m": 0.5,
    "break_min_m": 0.3,
    "stations_failed": 0
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Bay of Islands",
  "county": "Northland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}