{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-36.4425, 174.7622)",
 "slug": "discovered-lane-36-4425-174-7622",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.79901777171814,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 3.0,
   "end_distance_m": 5.0,
   "start_elevation_m": 11.094778095414574,
   "end_elevation_m": 11.810758450848937,
   "min_gradient_pct": -0.8980625643921769
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.977308499888636,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 3.0,
   "end_distance_m": 6.0,
   "start_elevation_m": 11.094778095414574,
   "end_elevation_m": 12.054097350411233,
   "min_gradient_pct": 0.4366676695170213
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 29.20959989107086,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 3.0,
   "end_distance_m": 8.0,
   "start_elevation_m": 11.094778095414574,
   "end_elevation_m": 12.555258089968117,
   "min_gradient_pct": 0.7413830193131332
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.026863052968743,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 61.0,
   "end_distance_m": 71.0,
   "start_elevation_m": 22.633601163227013,
   "end_elevation_m": 25.236287468523887,
   "min_gradient_pct": 3.398012379047728
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.62875638751317,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 53.0,
   "end_distance_m": 73.0,
   "start_elevation_m": 20.639071346268512,
   "end_elevation_m": 25.764822623771146,
   "min_gradient_pct": 6.401305772464738
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.404749947461298,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 53.0,
   "end_distance_m": 78.0,
   "start_elevation_m": 20.639071346268512,
   "end_elevation_m": 26.990258833133836,
   "min_gradient_pct": 6.568668303037953
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.680388711927485,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 32.0,
   "end_distance_m": 82.0,
   "start_elevation_m": 16.108878641842356,
   "end_elevation_m": 27.9490729978061,
   "min_gradient_pct": 6.9703730348750375
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.73150918838038,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 19.0,
   "end_distance_m": 119.0,
   "start_elevation_m": 13.751938950003199,
   "end_elevation_m": 34.48344813838358,
   "min_gradient_pct": 7.518848075360012
  }
 ],
 "shape": {
  "ascent_concentration": 0.39,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 152.0,
  "shape_class": "sustained"
 },
 "length_m": 384.9032281678079,
 "start_elevation_m": 10.657986834479821,
 "end_elevation_m": 62.02347970443105,
 "endpoint_gain_m": 51.365492869951225,
 "overall_gradient_pct": 13.345040807908523,
 "accumulated_ascent_m": 51.43987924794975,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 29.20959989107086,
   "start_distance_m": 3.0,
   "end_distance_m": 8.0,
   "midpoint_distance_m": 5.5,
   "start_elevation_m": 11.094778095414574,
   "end_elevation_m": 12.555258089968117,
   "start_xy": [
    1758052.4201764541,
    5965670.8299269695
   ],
   "end_xy": [
    1758049.1188038774,
    5965667.074805252
   ]
  },
  "max_10m": {
   "gradient_pct": 26.026863052968743,
   "start_distance_m": 61.0,
   "end_distance_m": 71.0,
   "midpoint_distance_m": 66.0,
   "start_elevation_m": 22.633601163227013,
   "end_elevation_m": 25.236287468523887,
   "start_xy": [
    1758010.3727762145,
    5965631.000026651
   ],
   "end_xy": [
    1758002.530019763,
    5965624.795901311
   ]
  },
  "max_20m": {
   "gradient_pct": 25.62875638751317,
   "start_distance_m": 53.0,
   "end_distance_m": 73.0,
   "midpoint_distance_m": 63.0,
   "start_elevation_m": 20.639071346268512,
   "end_elevation_m": 25.764822623771146,
   "start_xy": [
    1758016.5597677196,
    5965636.065636778
   ],
   "end_xy": [
    1758000.9614684726,
    5965623.555076242
   ]
  },
  "max_25m": {
   "gradient_pct": 25.404749947461298,
   "start_distance_m": 53.0,
   "end_distance_m": 78.0,
   "midpoint_distance_m": 65.5,
   "start_elevation_m": 20.639071346268512,
   "end_elevation_m": 26.990258833133836,
   "start_xy": [
    1758016.5597677196,
    5965636.065636778
   ],
   "end_xy": [
    1757997.0400902466,
    5965620.453013572
   ]
  },
  "max_50m": {
   "gradient_pct": 23.680388711927485,
   "start_distance_m": 32.0,
   "end_distance_m": 82.0,
   "midpoint_distance_m": 57.0,
   "start_elevation_m": 16.108878641842356,
   "end_elevation_m": 27.9490729978061,
   "start_xy": [
    1758032.0313567775,
    5965650.265282268
   ],
   "end_xy": [
    1757993.902987666,
    5965617.9713634355
   ]
  },
  "max_100m": {
   "gradient_pct": 20.73150918838038,
   "start_distance_m": 19.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 69.0,
   "start_elevation_m": 13.751938950003199,
   "end_elevation_m": 34.48344813838358,
   "start_xy": [
    1758041.6093495928,
    5965659.055165863
   ],
   "end_xy": [
    1757971.5536807664,
    5965588.4840863785
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.7413830193131332,
   "start_distance_m": 379.0,
   "end_distance_m": 384.0,
   "midpoint_distance_m": 381.5,
   "start_elevation_m": 62.02804178741051,
   "end_elevation_m": 62.065110938376165,
   "start_xy": [
    1757924.7856123599,
    5965337.728044101
   ],
   "end_xy": [
    1757925.256022468,
    5965332.750221853
   ]
  },
  "min_10m": {
   "gradient_pct": 3.398012379047728,
   "start_distance_m": 374.0,
   "end_distance_m": 384.0,
   "midpoint_distance_m": 379.0,
   "start_elevation_m": 61.72530970047139,
   "end_elevation_m": 62.065110938376165,
   "start_xy": [
    1757924.399365953,
    5965342.710761267
   ],
   "end_xy": [
    1757925.256022468,
    5965332.750221853
   ]
  },
  "min_20m": {
   "gradient_pct": 6.401305772464738,
   "start_distance_m": 205.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 215.0,
   "start_elevation_m": 43.09984312140024,
   "end_elevation_m": 44.38010427589319,
   "start_xy": [
    1757935.964592195,
    5965510.845550351
   ],
   "end_xy": [
    1757932.4643162831,
    5965491.154230727
   ]
  },
  "min_25m": {
   "gradient_pct": 6.568668303037953,
   "start_distance_m": 200.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 212.5,
   "start_elevation_m": 42.7379372001337,
   "end_elevation_m": 44.38010427589319,
   "start_xy": [
    1757937.4219538895,
    5965515.614055213
   ],
   "end_xy": [
    1757932.4643162831,
    5965491.154230727
   ]
  },
  "min_50m": {
   "gradient_pct": 6.9703730348750375,
   "start_distance_m": 188.0,
   "end_distance_m": 238.0,
   "midpoint_distance_m": 213.0,
   "start_elevation_m": 41.854753687832755,
   "end_elevation_m": 45.339940205270274,
   "start_xy": [
    1757941.4486809433,
    5965526.918278719
   ],
   "end_xy": [
    1757930.1891369405,
    5965478.354872971
   ]
  },
  "min_100m": {
   "gradient_pct": 7.518848075360012,
   "start_distance_m": 170.0,
   "end_distance_m": 270.0,
   "midpoint_distance_m": 220.0,
   "start_elevation_m": 40.48670198722745,
   "end_elevation_m": 48.00555006258746,
   "start_xy": [
    1757947.4882335882,
    5965543.8748056
   ],
   "end_xy": [
    1757926.2315748478,
    5965446.66027873
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.79901777171814,
   "start_distance_m": 3.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 4.0,
   "start_elevation_m": 11.094778095414574,
   "end_elevation_m": 11.810758450848937,
   "start_xy": [
    1758052.4201764541,
    5965670.8299269695
   ],
   "end_xy": [
    1758051.0996274233,
    5965669.327878282
   ]
  },
  "max_3m": {
   "gradient_pct": 31.977308499888636,
   "start_distance_m": 3.0,
   "end_distance_m": 6.0,
   "midpoint_distance_m": 4.5,
   "start_elevation_m": 11.094778095414574,
   "end_elevation_m": 12.054097350411233,
   "start_xy": [
    1758052.4201764541,
    5965670.8299269695
   ],
   "end_xy": [
    1758050.439352908,
    5965668.576853939
   ]
  }
 },
 "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": 0.073,
   "obstruction_max_height_m": 14.41,
   "flagged_windows_m": [
    2,
    3,
    5,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "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/AZ32.tiff"
  ],
  "calculated_at": "2026-09-28T05:10:57+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": [
   "AZ32"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 22,
   "stations_resolved": 22,
   "width_median_m": 6.0,
   "width_p10_m": 2.8,
   "width_min_m": 2.0,
   "width_max_m": 10.0,
   "bounded_share": 0.0,
   "unbounded_share": 1.0,
   "confidence_median": 0.0,
   "window_m": [
    53.0,
    78.0
   ],
   "width_at_max25_m": 7.75,
   "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": 22,
    "stations_resolved": 22,
    "width_median_m": 9.0,
    "width_p10_m": 3.45,
    "width_min_m": 2.25,
    "width_max_m": 12.0,
    "bounded_share": 0.364,
    "unbounded_share": 0.636,
    "confidence_median": 0.0,
    "width_median_bounded_m": 5.25,
    "window_m": [
     53.0,
     78.0
    ],
    "width_at_max25_m": 9.75,
    "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": "Rodney",
  "county": "Auckland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}