{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-36.7528, 174.4923)",
 "slug": "discovered-lane-36-7528-174-4923",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.679865284738398,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 133.0,
   "end_distance_m": 135.0,
   "start_elevation_m": 51.2167151087249,
   "end_elevation_m": 51.650312414419666,
   "min_gradient_pct": -7.812631196267006
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.21934127890223,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 132.0,
   "end_distance_m": 135.0,
   "start_elevation_m": 51.0137321760526,
   "end_elevation_m": 51.650312414419666,
   "min_gradient_pct": -6.756031153180686
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.953713270487526,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 133.0,
   "end_distance_m": 138.0,
   "start_elevation_m": 51.2167151087249,
   "end_elevation_m": 52.264400772249274,
   "min_gradient_pct": -5.935830877496073
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.739917748367773,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 130.0,
   "end_distance_m": 140.0,
   "start_elevation_m": 50.60433177571197,
   "end_elevation_m": 52.67832355054875,
   "min_gradient_pct": -4.913155236079234
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.542755489139388,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 121.0,
   "end_distance_m": 141.0,
   "start_elevation_m": 48.7707129847229,
   "end_elevation_m": 52.879264082550776,
   "min_gradient_pct": -4.2988863535495625
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.471637979012314,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 122.0,
   "end_distance_m": 147.0,
   "start_elevation_m": 48.969850182610685,
   "end_elevation_m": 54.08775967736376,
   "min_gradient_pct": -4.0589298136047205
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.98768030561517,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 106.0,
   "end_distance_m": 156.0,
   "start_elevation_m": 45.863173256581725,
   "end_elevation_m": 55.85701340938931,
   "min_gradient_pct": -2.6189858360294522
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.43292713635968,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 86.0,
   "end_distance_m": 186.0,
   "start_elevation_m": 42.36613568216629,
   "end_elevation_m": 60.79906281852597,
   "min_gradient_pct": -0.28620578607592506
  }
 ],
 "shape": {
  "ascent_concentration": 0.473,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 116.0,
  "shape_class": "stepped"
 },
 "length_m": 645.4805839780312,
 "start_elevation_m": 32.66730374075077,
 "end_elevation_m": 83.16200659866726,
 "endpoint_gain_m": 50.494702857916494,
 "overall_gradient_pct": 7.82280739518496,
 "accumulated_ascent_m": 52.30676046346251,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.953713270487526,
   "start_distance_m": 133.0,
   "end_distance_m": 138.0,
   "midpoint_distance_m": 135.5,
   "start_elevation_m": 51.2167151087249,
   "end_elevation_m": 52.264400772249274,
   "start_xy": [
    1733032.4859996052,
    5931463.365896392
   ],
   "end_xy": [
    1733037.4852228602,
    5931463.277766676
   ]
  },
  "max_10m": {
   "gradient_pct": 20.739917748367773,
   "start_distance_m": 130.0,
   "end_distance_m": 140.0,
   "midpoint_distance_m": 135.0,
   "start_elevation_m": 50.60433177571197,
   "end_elevation_m": 52.67832355054875,
   "start_xy": [
    1733029.4864656522,
    5931463.418774222
   ],
   "end_xy": [
    1733039.4849121622,
    5931463.242514788
   ]
  },
  "max_20m": {
   "gradient_pct": 20.542755489139388,
   "start_distance_m": 121.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 131.0,
   "start_elevation_m": 48.7707129847229,
   "end_elevation_m": 52.879264082550776,
   "start_xy": [
    1733020.4878637933,
    5931463.577407712
   ],
   "end_xy": [
    1733040.4847303631,
    5931463.223714966
   ]
  },
  "max_25m": {
   "gradient_pct": 20.471637979012314,
   "start_distance_m": 122.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 134.5,
   "start_elevation_m": 48.969850182610685,
   "end_elevation_m": 54.08775967736376,
   "start_xy": [
    1733021.4877084442,
    5931463.559781769
   ],
   "end_xy": [
    1733046.4824732814,
    5931463.059155295
   ]
  },
  "max_50m": {
   "gradient_pct": 19.98768030561517,
   "start_distance_m": 106.0,
   "end_distance_m": 156.0,
   "midpoint_distance_m": 131.0,
   "start_elevation_m": 45.863173256581725,
   "end_elevation_m": 55.85701340938931,
   "start_xy": [
    1733005.4890829453,
    5931463.746546797
   ],
   "end_xy": [
    1733055.4678854384,
    5931462.649011724
   ]
  },
  "max_100m": {
   "gradient_pct": 18.43292713635968,
   "start_distance_m": 86.0,
   "end_distance_m": 186.0,
   "midpoint_distance_m": 136.0,
   "start_elevation_m": 42.36613568216629,
   "end_elevation_m": 60.79906281852597,
   "start_xy": [
    1732985.489408061,
    5931463.860584178
   ],
   "end_xy": [
    1733085.310947462,
    5931459.775774343
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.935830877496073,
   "start_distance_m": 539.0,
   "end_distance_m": 544.0,
   "midpoint_distance_m": 541.5,
   "start_elevation_m": 78.59609288941505,
   "end_elevation_m": 78.29930134554024,
   "start_xy": [
    1733389.3341497125,
    5931627.266411199
   ],
   "end_xy": [
    1733393.2741265467,
    5931630.344817044
   ]
  },
  "min_10m": {
   "gradient_pct": -4.913155236079234,
   "start_distance_m": 533.0,
   "end_distance_m": 543.0,
   "midpoint_distance_m": 538.0,
   "start_elevation_m": 78.82692569227648,
   "end_elevation_m": 78.33561016866855,
   "start_xy": [
    1733384.6061775112,
    5931623.572324186
   ],
   "end_xy": [
    1733392.4861311798,
    5931629.729135875
   ]
  },
  "min_20m": {
   "gradient_pct": -4.2988863535495625,
   "start_distance_m": 526.0,
   "end_distance_m": 546.0,
   "midpoint_distance_m": 536.0,
   "start_elevation_m": 79.09896690503795,
   "end_elevation_m": 78.23918963432804,
   "start_xy": [
    1733379.0902099432,
    5931619.2625560025
   ],
   "end_xy": [
    1733394.8501172804,
    5931631.576179381
   ]
  },
  "min_25m": {
   "gradient_pct": -4.0589298136047205,
   "start_distance_m": 523.0,
   "end_distance_m": 548.0,
   "midpoint_distance_m": 535.5,
   "start_elevation_m": 79.18612498787957,
   "end_elevation_m": 78.17139253447839,
   "start_xy": [
    1733376.7262238425,
    5931617.415512496
   ],
   "end_xy": [
    1733396.4261080143,
    5931632.80754172
   ]
  },
  "min_50m": {
   "gradient_pct": -2.6189858360294522,
   "start_distance_m": 512.0,
   "end_distance_m": 562.0,
   "midpoint_distance_m": 537.0,
   "start_elevation_m": 79.32227659460496,
   "end_elevation_m": 78.01278367659023,
   "start_xy": [
    1733368.058274807,
    5931610.643019638
   ],
   "end_xy": [
    1733407.4580431504,
    5931641.427078085
   ]
  },
  "min_100m": {
   "gradient_pct": -0.28620578607592506,
   "start_distance_m": 462.0,
   "end_distance_m": 562.0,
   "midpoint_distance_m": 512.0,
   "start_elevation_m": 78.29898946266616,
   "end_elevation_m": 78.01278367659023,
   "start_xy": [
    1733326.6037763995,
    5931582.835577347
   ],
   "end_xy": [
    1733407.4580431504,
    5931641.427078085
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.679865284738398,
   "start_distance_m": 133.0,
   "end_distance_m": 135.0,
   "midpoint_distance_m": 134.0,
   "start_elevation_m": 51.2167151087249,
   "end_elevation_m": 51.650312414419666,
   "start_xy": [
    1733032.4859996052,
    5931463.365896392
   ],
   "end_xy": [
    1733034.4856889073,
    5931463.330644505
   ]
  },
  "max_3m": {
   "gradient_pct": 21.21934127890223,
   "start_distance_m": 132.0,
   "end_distance_m": 135.0,
   "midpoint_distance_m": 133.5,
   "start_elevation_m": 51.0137321760526,
   "end_elevation_m": 51.650312414419666,
   "start_xy": [
    1733031.4861549542,
    5931463.383522335
   ],
   "end_xy": [
    1733034.4856889073,
    5931463.330644505
   ]
  }
 },
 "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": 0.444,
   "obstruction_max_height_m": 17.4,
   "flagged_windows_m": [
    10,
    20,
    25,
    50
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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-n2",
   "road_pbf": "block-batch-nz-n2.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": "sha256:1ffe0b32a690b9c1"
  },
  "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/BA31.tiff"
  ],
  "calculated_at": "2026-09-28T05:05:37+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-n2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-n2",
  "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": [
   "BA31"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 32,
   "stations_resolved": 32,
   "width_median_m": 5.5,
   "width_p10_m": 3.5,
   "width_min_m": 1.25,
   "width_max_m": 9.5,
   "bounded_share": 0.188,
   "unbounded_share": 0.812,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.75,
   "window_m": [
    122.0,
    147.0
   ],
   "width_at_max25_m": 5.5,
   "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": 32,
    "stations_resolved": 32,
    "width_median_m": 2.88,
    "width_p10_m": 0.55,
    "width_min_m": 0.5,
    "width_max_m": 9.25,
    "bounded_share": 0.969,
    "unbounded_share": 0.031,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     122.0,
     147.0
    ],
    "width_at_max25_m": 1.0,
    "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": "Rodney",
  "county": "Auckland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}