{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-41.1133, 174.9209)",
 "slug": "discovered-lane-41-1133-174-9209",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.647476284043776,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 351.0,
   "end_distance_m": 353.0,
   "start_elevation_m": 36.48462770596325,
   "end_elevation_m": 36.917577231644124,
   "min_gradient_pct": -3.518462625827601
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.56807624254687,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 490.0,
   "end_distance_m": 493.0,
   "start_elevation_m": 63.404555718780415,
   "end_elevation_m": 64.05159800605682,
   "min_gradient_pct": -2.7797589021276123
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.317171900319636,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 490.0,
   "end_distance_m": 495.0,
   "start_elevation_m": 63.404555718780415,
   "end_elevation_m": 64.4704143137964,
   "min_gradient_pct": -2.099881050803347
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.98821663423294,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 485.0,
   "end_distance_m": 495.0,
   "start_elevation_m": 62.3715926503731,
   "end_elevation_m": 64.4704143137964,
   "min_gradient_pct": -1.8602629018496053
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.856872765177634,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 475.0,
   "end_distance_m": 495.0,
   "start_elevation_m": 60.29903976076087,
   "end_elevation_m": 64.4704143137964,
   "min_gradient_pct": -1.7602636375330682
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.75345524824948,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 475.0,
   "end_distance_m": 500.0,
   "start_elevation_m": 60.29903976076087,
   "end_elevation_m": 65.48740357282324,
   "min_gradient_pct": -1.6941963496387127
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.44448660190571,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 445.0,
   "end_distance_m": 495.0,
   "start_elevation_m": 54.24817101284354,
   "end_elevation_m": 64.4704143137964,
   "min_gradient_pct": -1.642280150073887
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.225455958577683,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 404.0,
   "end_distance_m": 504.0,
   "start_elevation_m": 46.06312316854542,
   "end_elevation_m": 66.2885791271231,
   "min_gradient_pct": -1.0598084259690737
  }
 ],
 "shape": {
  "ascent_concentration": 0.44,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 328.0,
  "shape_class": "sustained"
 },
 "length_m": 854.7510072764491,
 "start_elevation_m": 7.767119179768692,
 "end_elevation_m": 98.95646093347226,
 "endpoint_gain_m": 91.18934175370356,
 "overall_gradient_pct": 10.668526971879954,
 "accumulated_ascent_m": 92.79717925912215,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.317171900319636,
   "start_distance_m": 490.0,
   "end_distance_m": 495.0,
   "midpoint_distance_m": 492.5,
   "start_elevation_m": 63.404555718780415,
   "end_elevation_m": 64.4704143137964,
   "start_xy": [
    1761471.3368787114,
    5446791.326523175
   ],
   "end_xy": [
    1761475.6786126927,
    5446788.846735678
   ]
  },
  "max_10m": {
   "gradient_pct": 20.98821663423294,
   "start_distance_m": 485.0,
   "end_distance_m": 495.0,
   "midpoint_distance_m": 490.0,
   "start_elevation_m": 62.3715926503731,
   "end_elevation_m": 64.4704143137964,
   "start_xy": [
    1761466.9516048634,
    5446793.723455149
   ],
   "end_xy": [
    1761475.6786126927,
    5446788.846735678
   ]
  },
  "max_20m": {
   "gradient_pct": 20.856872765177634,
   "start_distance_m": 475.0,
   "end_distance_m": 495.0,
   "midpoint_distance_m": 485.0,
   "start_elevation_m": 60.29903976076087,
   "end_elevation_m": 64.4704143137964,
   "start_xy": [
    1761457.9416046946,
    5446798.061645665
   ],
   "end_xy": [
    1761475.6786126927,
    5446788.846735678
   ]
  },
  "max_25m": {
   "gradient_pct": 20.75345524824948,
   "start_distance_m": 475.0,
   "end_distance_m": 500.0,
   "midpoint_distance_m": 487.5,
   "start_elevation_m": 60.29903976076087,
   "end_elevation_m": 65.48740357282324,
   "start_xy": [
    1761457.9416046946,
    5446798.061645665
   ],
   "end_xy": [
    1761480.0205394689,
    5446786.3672969965
   ]
  },
  "max_50m": {
   "gradient_pct": 20.44448660190571,
   "start_distance_m": 445.0,
   "end_distance_m": 495.0,
   "midpoint_distance_m": 470.0,
   "start_elevation_m": 54.24817101284354,
   "end_elevation_m": 64.4704143137964,
   "start_xy": [
    1761430.9116041881,
    5446811.076217215
   ],
   "end_xy": [
    1761475.6786126927,
    5446788.846735678
   ]
  },
  "max_100m": {
   "gradient_pct": 20.225455958577683,
   "start_distance_m": 404.0,
   "end_distance_m": 504.0,
   "midpoint_distance_m": 454.0,
   "start_elevation_m": 46.06312316854542,
   "end_elevation_m": 66.2885791271231,
   "start_xy": [
    1761393.7991969339,
    5446828.501741928
   ],
   "end_xy": [
    1761483.5481639889,
    5446784.481596796
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.099881050803347,
   "start_distance_m": 96.0,
   "end_distance_m": 101.0,
   "midpoint_distance_m": 98.5,
   "start_elevation_m": 6.792860678818965,
   "end_elevation_m": 6.687866626278797,
   "start_xy": [
    1761147.6361350808,
    5446953.7355440585
   ],
   "end_xy": [
    1761149.913522961,
    5446958.175263017
   ]
  },
  "min_10m": {
   "gradient_pct": -1.8602629018496053,
   "start_distance_m": 38.0,
   "end_distance_m": 48.0,
   "midpoint_distance_m": 43.0,
   "start_elevation_m": 7.685609556597855,
   "end_elevation_m": 7.499583266412895,
   "start_xy": [
    1761159.6950615386,
    5446898.658385498
   ],
   "end_xy": [
    1761155.2732888176,
    5446907.6276622815
   ]
  },
  "min_20m": {
   "gradient_pct": -1.7602636375330682,
   "start_distance_m": 32.0,
   "end_distance_m": 52.0,
   "midpoint_distance_m": 42.0,
   "start_elevation_m": 7.772831323228791,
   "end_elevation_m": 7.420778595722178,
   "start_xy": [
    1761162.0758186346,
    5446893.156404044
   ],
   "end_xy": [
    1761153.5464399047,
    5446911.235101786
   ]
  },
  "min_25m": {
   "gradient_pct": -1.6941963496387127,
   "start_distance_m": 27.0,
   "end_distance_m": 52.0,
   "midpoint_distance_m": 39.5,
   "start_elevation_m": 7.844327683131856,
   "end_elevation_m": 7.420778595722178,
   "start_xy": [
    1761163.393374166,
    5446888.381121633
   ],
   "end_xy": [
    1761153.5464399047,
    5446911.235101786
   ]
  },
  "min_50m": {
   "gradient_pct": -1.642280150073887,
   "start_distance_m": 16.0,
   "end_distance_m": 66.0,
   "midpoint_distance_m": 41.0,
   "start_elevation_m": 8.028416741059656,
   "end_elevation_m": 7.207276666022713,
   "start_xy": [
    1761159.7804163431,
    5446878.306869704
   ],
   "end_xy": [
    1761148.255271628,
    5446924.175946328
   ]
  },
  "min_100m": {
   "gradient_pct": -1.0598084259690737,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 7.767119179768692,
   "end_elevation_m": 6.707310753799618,
   "start_xy": [
    1761146.735,
    5446869.245
   ],
   "end_xy": [
    1761149.4447344018,
    5446957.2919526035
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.647476284043776,
   "start_distance_m": 351.0,
   "end_distance_m": 353.0,
   "midpoint_distance_m": 352.0,
   "start_elevation_m": 36.48462770596325,
   "end_elevation_m": 36.917577231644124,
   "start_xy": [
    1761344.7261015188,
    5446848.216352927
   ],
   "end_xy": [
    1761346.6738329674,
    5446847.7670439575
   ]
  },
  "max_3m": {
   "gradient_pct": 21.56807624254687,
   "start_distance_m": 490.0,
   "end_distance_m": 493.0,
   "midpoint_distance_m": 491.5,
   "start_elevation_m": 63.404555718780415,
   "end_elevation_m": 64.05159800605682,
   "start_xy": [
    1761471.3368787114,
    5446791.326523175
   ],
   "end_xy": [
    1761473.9419191002,
    5446789.838650676
   ]
  }
 },
 "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": 0.118,
   "obstruction_max_height_m": 17.44,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": []
 },
 "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-n3",
   "road_pbf": "block-batch-nz-n3.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": "sha256:7959a7d1d462b1b3"
  },
  "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/BP32.tiff"
  ],
  "calculated_at": "2026-09-28T05:14:22+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-n3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-n3",
  "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": [
   "BP32"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 39,
   "stations_resolved": 39,
   "width_median_m": 6.25,
   "width_p10_m": 4.25,
   "width_min_m": 3.5,
   "width_max_m": 12.0,
   "bounded_share": 0.436,
   "unbounded_share": 0.564,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.5,
   "window_m": [
    475.0,
    500.0
   ],
   "width_at_max25_m": 6.12,
   "window_stations": 6,
   "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": 39,
    "stations_resolved": 39,
    "width_median_m": 4.0,
    "width_p10_m": 1.25,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.769,
    "unbounded_share": 0.231,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.25,
    "window_m": [
     475.0,
     500.0
    ],
    "width_at_max25_m": 4.38,
    "window_stations": 6,
    "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": "Wellington",
  "county": "Wellington",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}