{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-43.8177, 173.0761)",
 "slug": "discovered-lane-43-8177-173-0761",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.56954602288488,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 405.0,
   "end_distance_m": 407.0,
   "start_elevation_m": 217.94716679171842,
   "end_elevation_m": 218.3985577121761,
   "min_gradient_pct": -18.775811870095538
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.11404733674082,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 333.0,
   "end_distance_m": 336.0,
   "start_elevation_m": 204.23944537713942,
   "end_elevation_m": 204.90286679724164,
   "min_gradient_pct": -18.16092666089541
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.94088744408191,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 333.0,
   "end_distance_m": 338.0,
   "start_elevation_m": 204.23944537713942,
   "end_elevation_m": 205.3364897493435,
   "min_gradient_pct": -17.61966968259685
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.50745131752501,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 331.0,
   "end_distance_m": 341.0,
   "start_elevation_m": 203.80954751687736,
   "end_elevation_m": 205.96029264862986,
   "min_gradient_pct": -16.715792879473668
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.087839438590237,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 330.0,
   "end_distance_m": 350.0,
   "start_elevation_m": 203.59720211384186,
   "end_elevation_m": 207.8147700015599,
   "min_gradient_pct": -15.87176368577417
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.75594284287979,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 327.0,
   "end_distance_m": 352.0,
   "start_elevation_m": 203.00086853805286,
   "end_elevation_m": 208.1898542487728,
   "min_gradient_pct": -14.461906770092128
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.014966507298936,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 312.0,
   "end_distance_m": 362.0,
   "start_elevation_m": 200.07336722477007,
   "end_elevation_m": 210.08085047841953,
   "min_gradient_pct": -7.1349037904572015
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.43959029415396,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 314.0,
   "end_distance_m": 414.0,
   "start_elevation_m": 200.44073832520877,
   "end_elevation_m": 219.88032861936273,
   "min_gradient_pct": -1.0036701795841623
  }
 ],
 "shape": {
  "ascent_concentration": 0.356,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 427.0,
  "shape_class": "sustained"
 },
 "length_m": 1139.3884078782328,
 "start_elevation_m": 175.3456958038483,
 "end_elevation_m": 303.54040133154825,
 "endpoint_gain_m": 128.19470552769997,
 "overall_gradient_pct": 11.251185692368413,
 "accumulated_ascent_m": 132.60699797581293,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.94088744408191,
   "start_distance_m": 333.0,
   "end_distance_m": 338.0,
   "midpoint_distance_m": 335.5,
   "start_elevation_m": 204.23944537713942,
   "end_elevation_m": 205.3364897493435,
   "start_xy": [
    1606128.9897366755,
    5148521.457553718
   ],
   "end_xy": [
    1606128.947871364,
    5148516.461325479
   ]
  },
  "max_10m": {
   "gradient_pct": 21.50745131752501,
   "start_distance_m": 331.0,
   "end_distance_m": 341.0,
   "midpoint_distance_m": 336.0,
   "start_elevation_m": 203.80954751687736,
   "end_elevation_m": 205.96029264862986,
   "start_xy": [
    1606129.1238108024,
    5148523.45305469
   ],
   "end_xy": [
    1606128.996243254,
    5148513.4617154775
   ]
  },
  "max_20m": {
   "gradient_pct": 21.087839438590237,
   "start_distance_m": 330.0,
   "end_distance_m": 350.0,
   "midpoint_distance_m": 340.0,
   "start_elevation_m": 203.59720211384186,
   "end_elevation_m": 207.8147700015599,
   "start_xy": [
    1606129.1908478658,
    5148524.450805176
   ],
   "end_xy": [
    1606130.5893637906,
    5148504.717511445
   ]
  },
  "max_25m": {
   "gradient_pct": 20.75594284287979,
   "start_distance_m": 327.0,
   "end_distance_m": 352.0,
   "midpoint_distance_m": 339.5,
   "start_elevation_m": 203.00086853805286,
   "end_elevation_m": 208.1898542487728,
   "start_xy": [
    1606129.391959056,
    5148527.444056634
   ],
   "end_xy": [
    1606131.4955249014,
    5148502.960931208
   ]
  },
  "max_50m": {
   "gradient_pct": 20.014966507298936,
   "start_distance_m": 312.0,
   "end_distance_m": 362.0,
   "midpoint_distance_m": 337.0,
   "start_elevation_m": 200.07336722477007,
   "end_elevation_m": 210.08085047841953,
   "start_xy": [
    1606130.3975150073,
    5148542.410313922
   ],
   "end_xy": [
    1606137.6746578475,
    5148495.106593596
   ]
  },
  "max_100m": {
   "gradient_pct": 19.43959029415396,
   "start_distance_m": 314.0,
   "end_distance_m": 414.0,
   "midpoint_distance_m": 364.0,
   "start_elevation_m": 200.44073832520877,
   "end_elevation_m": 219.88032861936273,
   "start_xy": [
    1606130.2634408805,
    5148540.41481295
   ],
   "end_xy": [
    1606160.3438661178,
    5148448.987867136
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -17.61966968259685,
   "start_distance_m": 19.0,
   "end_distance_m": 24.0,
   "midpoint_distance_m": 21.5,
   "start_elevation_m": 173.0964332054825,
   "end_elevation_m": 172.21544972135266,
   "start_xy": [
    1606178.828876421,
    5148714.8713666005
   ],
   "end_xy": [
    1606178.2369638558,
    5148709.915059381
   ]
  },
  "min_10m": {
   "gradient_pct": -16.715792879473668,
   "start_distance_m": 16.0,
   "end_distance_m": 26.0,
   "midpoint_distance_m": 21.0,
   "start_elevation_m": 173.56009178085284,
   "end_elevation_m": 171.88851249290548,
   "start_xy": [
    1606179.2860576168,
    5148717.836326188
   ],
   "end_xy": [
    1606178.197850547,
    5148707.915441881
   ]
  },
  "min_20m": {
   "gradient_pct": -15.87176368577417,
   "start_distance_m": 8.0,
   "end_distance_m": 28.0,
   "midpoint_distance_m": 18.0,
   "start_elevation_m": 174.77830216431312,
   "end_elevation_m": 171.60394942715828,
   "start_xy": [
    1606179.3635885941,
    5148725.808879829
   ],
   "end_xy": [
    1606178.1587372383,
    5148705.91582438
   ]
  },
  "min_25m": {
   "gradient_pct": -14.461906770092128,
   "start_distance_m": 6.0,
   "end_distance_m": 31.0,
   "midpoint_distance_m": 18.5,
   "start_elevation_m": 174.94931437506438,
   "end_elevation_m": 171.33383768254134,
   "start_xy": [
    1606179.2864710565,
    5148727.807392498
   ],
   "end_xy": [
    1606178.1000672753,
    5148702.9163981285
   ]
  },
  "min_50m": {
   "gradient_pct": -7.1349037904572015,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 175.3456958038483,
   "end_elevation_m": 171.7782439086197,
   "start_xy": [
    1606177.156,
    5148733.275
   ],
   "end_xy": [
    1606187.600309671,
    5148686.885620298
   ]
  },
  "min_100m": {
   "gradient_pct": -1.0036701795841623,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 175.3456958038483,
   "end_elevation_m": 174.34202562426412,
   "start_xy": [
    1606177.156,
    5148733.275
   ],
   "end_xy": [
    1606205.4627968702,
    5148640.839280158
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.56954602288488,
   "start_distance_m": 405.0,
   "end_distance_m": 407.0,
   "midpoint_distance_m": 406.0,
   "start_elevation_m": 217.94716679171842,
   "end_elevation_m": 218.3985577121761,
   "start_xy": [
    1606157.8115857719,
    5148457.624275894
   ],
   "end_xy": [
    1606158.3743147377,
    5148455.705073948
   ]
  },
  "max_3m": {
   "gradient_pct": 22.11404733674082,
   "start_distance_m": 333.0,
   "end_distance_m": 336.0,
   "midpoint_distance_m": 334.5,
   "start_elevation_m": 204.23944537713942,
   "end_elevation_m": 204.90286679724164,
   "start_xy": [
    1606128.9897366755,
    5148521.457553718
   ],
   "end_xy": [
    1606128.9156234374,
    5148518.46106548
   ]
  }
 },
 "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": 0.022,
   "obstruction_max_height_m": 8.13,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "descends_at_start"
  ]
 },
 "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-s3",
   "road_pbf": "block-batch-nz-s3.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": "sha256:65f98740b9968e3e"
  },
  "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/BY25.tiff"
  ],
  "calculated_at": "2026-09-28T05:28:00+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-s3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-s3",
  "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": [
   "BY25"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked",
  "carriageway": {
   "stations": 52,
   "stations_resolved": 52,
   "width_median_m": 4.0,
   "width_p10_m": 3.0,
   "width_min_m": 2.5,
   "width_max_m": 12.0,
   "bounded_share": 0.481,
   "unbounded_share": 0.519,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.75,
   "window_m": [
    327.0,
    352.0
   ],
   "width_at_max25_m": 3.25,
   "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": 52,
    "stations_resolved": 52,
    "width_median_m": 5.5,
    "width_p10_m": 3.8,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.885,
    "unbounded_share": 0.115,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.5,
    "window_m": [
     327.0,
     352.0
    ],
    "width_at_max25_m": 5.0,
    "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": "Banks Peninsula Community",
  "county": "Canterbury",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}