{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-36.8482, 174.5909)",
 "slug": "discovered-lane-36-8482-174-5909",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.7261171139876,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 373.0,
   "end_distance_m": 375.0,
   "start_elevation_m": 53.49870208232794,
   "end_elevation_m": 53.95322442460769,
   "min_gradient_pct": -8.767171038673105,
   "suppressed_max_gradient_pct": 40.63823520422236,
   "suppressed_location_m": [
    0.0,
    2.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.43248866768302,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 376.0,
   "end_distance_m": 379.0,
   "start_elevation_m": 54.165903059922684,
   "end_elevation_m": 54.838877719953175,
   "min_gradient_pct": -8.543612310245289,
   "suppressed_max_gradient_pct": 28.29945997299473,
   "suppressed_location_m": [
    0.0,
    3.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.296394621575644,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 377.0,
   "end_distance_m": 382.0,
   "start_elevation_m": 54.38782468849478,
   "end_elevation_m": 55.50264441957356,
   "min_gradient_pct": -7.789411822817129
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.11942872549841,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 373.0,
   "end_distance_m": 383.0,
   "start_elevation_m": 53.49870208232794,
   "end_elevation_m": 55.71064495487778,
   "min_gradient_pct": -6.9702116247033885
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.174886262617427,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 367.0,
   "end_distance_m": 387.0,
   "start_elevation_m": 52.286712386019545,
   "end_elevation_m": 56.52168963854303,
   "min_gradient_pct": -5.4461563041496674
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.91297587805164,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 363.0,
   "end_distance_m": 388.0,
   "start_elevation_m": 51.49069270637158,
   "end_elevation_m": 56.71893667588449,
   "min_gradient_pct": -5.1213959378387415
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.928153411700336,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 334.0,
   "end_distance_m": 384.0,
   "start_elevation_m": 45.94338726543392,
   "end_elevation_m": 55.90746397128409,
   "min_gradient_pct": -0.4818624998322534
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.6610045802869,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 328.0,
   "end_distance_m": 428.0,
   "start_elevation_m": 44.94182635792441,
   "end_elevation_m": 61.60283093821131,
   "min_gradient_pct": 0.9176431558386255
  }
 ],
 "shape": {
  "ascent_concentration": 0.379,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 145.0,
  "shape_class": "sustained"
 },
 "length_m": 537.8926366936001,
 "start_elevation_m": 19.115348275286294,
 "end_elevation_m": 73.85119708220155,
 "endpoint_gain_m": 54.73584880691526,
 "overall_gradient_pct": 10.175980311493731,
 "accumulated_ascent_m": 56.01910736715394,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.296394621575644,
   "start_distance_m": 377.0,
   "end_distance_m": 382.0,
   "midpoint_distance_m": 379.5,
   "start_elevation_m": 54.38782468849478,
   "end_elevation_m": 55.50264441957356,
   "start_xy": [
    1741908.7646528825,
    5920740.712443365
   ],
   "end_xy": [
    1741905.3897608256,
    5920744.4016307555
   ]
  },
  "max_10m": {
   "gradient_pct": 22.11942872549841,
   "start_distance_m": 373.0,
   "end_distance_m": 383.0,
   "midpoint_distance_m": 378.0,
   "start_elevation_m": 53.49870208232794,
   "end_elevation_m": 55.71064495487778,
   "start_xy": [
    1741911.4645665279,
    5920737.761093453
   ],
   "end_xy": [
    1741904.7147824143,
    5920745.139468234
   ]
  },
  "max_20m": {
   "gradient_pct": 21.174886262617427,
   "start_distance_m": 367.0,
   "end_distance_m": 387.0,
   "midpoint_distance_m": 377.0,
   "start_elevation_m": 52.286712386019545,
   "end_elevation_m": 56.52168963854303,
   "start_xy": [
    1741915.514436996,
    5920733.334068583
   ],
   "end_xy": [
    1741902.0148687689,
    5920748.090818146
   ]
  },
  "max_25m": {
   "gradient_pct": 20.91297587805164,
   "start_distance_m": 363.0,
   "end_distance_m": 388.0,
   "midpoint_distance_m": 375.5,
   "start_elevation_m": 51.49069270637158,
   "end_elevation_m": 56.71893667588449,
   "start_xy": [
    1741918.2143506415,
    5920730.38271867
   ],
   "end_xy": [
    1741901.3398903576,
    5920748.828655625
   ]
  },
  "max_50m": {
   "gradient_pct": 19.928153411700336,
   "start_distance_m": 334.0,
   "end_distance_m": 384.0,
   "midpoint_distance_m": 359.0,
   "start_elevation_m": 45.94338726543392,
   "end_elevation_m": 55.90746397128409,
   "start_xy": [
    1741938.7055612986,
    5920709.923944325
   ],
   "end_xy": [
    1741904.039804003,
    5920745.877305712
   ]
  },
  "max_100m": {
   "gradient_pct": 16.6610045802869,
   "start_distance_m": 328.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 378.0,
   "start_elevation_m": 44.94182635792441,
   "end_elevation_m": 61.60283093821131,
   "start_xy": [
    1741943.2259931143,
    5920705.978605785
   ],
   "end_xy": [
    1741863.9531973533,
    5920760.238581307
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.789411822817129,
   "start_distance_m": 127.0,
   "end_distance_m": 132.0,
   "midpoint_distance_m": 129.5,
   "start_elevation_m": 22.08274676341823,
   "end_elevation_m": 21.693276172277372,
   "start_xy": [
    1742107.6507218014,
    5920631.723770891
   ],
   "end_xy": [
    1742102.6589299391,
    5920631.437390019
   ]
  },
  "min_10m": {
   "gradient_pct": -6.9702116247033885,
   "start_distance_m": 122.0,
   "end_distance_m": 132.0,
   "midpoint_distance_m": 127.0,
   "start_elevation_m": 22.39029733474771,
   "end_elevation_m": 21.693276172277372,
   "start_xy": [
    1742112.637375775,
    5920631.646028389
   ],
   "end_xy": [
    1742102.6589299391,
    5920631.437390019
   ]
  },
  "min_20m": {
   "gradient_pct": -5.4461563041496674,
   "start_distance_m": 114.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 124.0,
   "start_elevation_m": 22.70477599436411,
   "end_elevation_m": 21.615544733534175,
   "start_xy": [
    1742120.6081346434,
    5920630.962652166
   ],
   "end_xy": [
    1742100.6622131944,
    5920631.322837669
   ]
  },
  "min_25m": {
   "gradient_pct": -5.1213959378387415,
   "start_distance_m": 109.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 121.5,
   "start_elevation_m": 22.89589371799386,
   "end_elevation_m": 21.615544733534175,
   "start_xy": [
    1742125.5898589361,
    5920630.535542028
   ],
   "end_xy": [
    1742100.6622131944,
    5920631.322837669
   ]
  },
  "min_50m": {
   "gradient_pct": -0.4818624998322534,
   "start_distance_m": 85.0,
   "end_distance_m": 135.0,
   "midpoint_distance_m": 110.0,
   "start_elevation_m": 21.867095023597898,
   "end_elevation_m": 21.62616377368177,
   "start_xy": [
    1742119.811089344,
    5920608.148496382
   ],
   "end_xy": [
    1742099.6638548218,
    5920631.265561495
   ]
  },
  "min_100m": {
   "gradient_pct": 0.9176431558386255,
   "start_distance_m": 35.0,
   "end_distance_m": 135.0,
   "midpoint_distance_m": 85.0,
   "start_elevation_m": 20.708520617843146,
   "end_elevation_m": 21.62616377368177,
   "start_xy": [
    1742105.7934779748,
    5920560.1536365375
   ],
   "end_xy": [
    1742099.6638548218,
    5920631.265561495
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.7261171139876,
   "start_distance_m": 373.0,
   "end_distance_m": 375.0,
   "midpoint_distance_m": 374.0,
   "start_elevation_m": 53.49870208232794,
   "end_elevation_m": 53.95322442460769,
   "start_xy": [
    1741911.4645665279,
    5920737.761093453
   ],
   "end_xy": [
    1741910.114609705,
    5920739.236768409
   ]
  },
  "max_3m": {
   "gradient_pct": 22.43248866768302,
   "start_distance_m": 376.0,
   "end_distance_m": 379.0,
   "midpoint_distance_m": 377.5,
   "start_elevation_m": 54.165903059922684,
   "end_elevation_m": 54.838877719953175,
   "start_xy": [
    1741909.4396312938,
    5920739.974605886
   ],
   "end_xy": [
    1741907.4146960597,
    5920742.188118321
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.039,
   "windows_resited": [
    2.0,
    3.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.15,
   "obstruction_max_height_m": 11.58,
   "flagged_windows_m": [
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    20.0
   ]
  ],
  "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-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": "2026-09-28T05:03:17+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": 5,
  "structure_mask_ranges_m": [
   [
    0.0,
    15.0
   ]
  ],
  "carriageway": {
   "stations": 28,
   "stations_resolved": 28,
   "width_median_m": 5.25,
   "width_p10_m": 4.25,
   "width_min_m": 3.5,
   "width_max_m": 12.0,
   "bounded_share": 0.0,
   "unbounded_share": 1.0,
   "confidence_median": 0.0,
   "window_m": [
    363.0,
    388.0
   ],
   "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": 28,
    "stations_resolved": 28,
    "width_median_m": 3.75,
    "width_p10_m": 1.18,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.857,
    "unbounded_share": 0.143,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     363.0,
     388.0
    ],
    "width_at_max25_m": 1.75,
    "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": "Henderson-Massey",
  "county": "Auckland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}