{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-35.5329, 174.3307)",
 "slug": "discovered-lane-35-5329-174-3307",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.116775933342694,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 532.0,
   "end_distance_m": 534.0,
   "start_elevation_m": 144.02346309690984,
   "end_elevation_m": 144.5257986155767,
   "min_gradient_pct": -7.761786095386469
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.27070619402798,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 532.0,
   "end_distance_m": 535.0,
   "start_elevation_m": 144.02346309690984,
   "end_elevation_m": 144.75158428273068,
   "min_gradient_pct": -6.975238348608078
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.118014872184176,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 530.0,
   "end_distance_m": 535.0,
   "start_elevation_m": 143.59568353912147,
   "end_elevation_m": 144.75158428273068,
   "min_gradient_pct": -6.3802787627298585
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.825149627341602,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 527.0,
   "end_distance_m": 537.0,
   "start_elevation_m": 142.98329095474512,
   "end_elevation_m": 145.16580591747928,
   "min_gradient_pct": -3.5351300659300477
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.469092250049243,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 518.0,
   "end_distance_m": 538.0,
   "start_elevation_m": 141.26449932810218,
   "end_elevation_m": 145.35831777811202,
   "min_gradient_pct": -0.35519938507874826
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.195736122441417,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 513.0,
   "end_distance_m": 538.0,
   "start_elevation_m": 140.30938374750167,
   "end_elevation_m": 145.35831777811202,
   "min_gradient_pct": 0.20623475810327818
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.3201377149947,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 490.0,
   "end_distance_m": 540.0,
   "start_elevation_m": 136.48870388553203,
   "end_elevation_m": 145.64877274302938,
   "min_gradient_pct": 1.442448797834345
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.018664059502328,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 442.0,
   "end_distance_m": 542.0,
   "start_elevation_m": 132.85015562712942,
   "end_elevation_m": 145.86881968663175,
   "min_gradient_pct": 1.927982385585537
  }
 ],
 "shape": {
  "ascent_concentration": 0.375,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 77.0,
  "shape_class": "sustained"
 },
 "length_m": 576.9999999996252,
 "start_elevation_m": 101.98330198170392,
 "end_elevation_m": 147.83671326335954,
 "endpoint_gain_m": 45.853411281655625,
 "overall_gradient_pct": 7.946865040153451,
 "accumulated_ascent_m": 46.27701427657972,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.118014872184176,
   "start_distance_m": 530.0,
   "end_distance_m": 535.0,
   "midpoint_distance_m": 532.5,
   "start_elevation_m": 143.59568353912147,
   "end_elevation_m": 144.75158428273068,
   "start_xy": [
    1720622.7219953537,
    6067142.252744193
   ],
   "end_xy": [
    1720623.3845651315,
    6067147.208649891
   ]
  },
  "max_10m": {
   "gradient_pct": 21.825149627341602,
   "start_distance_m": 527.0,
   "end_distance_m": 537.0,
   "midpoint_distance_m": 532.0,
   "start_elevation_m": 142.98329095474512,
   "end_elevation_m": 145.16580591747928,
   "start_xy": [
    1720622.3244534868,
    6067139.279200774
   ],
   "end_xy": [
    1720623.6495930427,
    6067149.19101217
   ]
  },
  "max_20m": {
   "gradient_pct": 20.469092250049243,
   "start_distance_m": 518.0,
   "end_distance_m": 538.0,
   "midpoint_distance_m": 528.0,
   "start_elevation_m": 141.26449932810218,
   "end_elevation_m": 145.35831777811202,
   "start_xy": [
    1720622.1690084834,
    6067130.31156276
   ],
   "end_xy": [
    1720623.7821069984,
    6067150.18219331
   ]
  },
  "max_25m": {
   "gradient_pct": 20.195736122441417,
   "start_distance_m": 513.0,
   "end_distance_m": 538.0,
   "midpoint_distance_m": 525.5,
   "start_elevation_m": 140.30938374750167,
   "end_elevation_m": 145.35831777811202,
   "start_xy": [
    1720622.3805532993,
    6067125.316039885
   ],
   "end_xy": [
    1720623.7821069984,
    6067150.18219331
   ]
  },
  "max_50m": {
   "gradient_pct": 18.3201377149947,
   "start_distance_m": 490.0,
   "end_distance_m": 540.0,
   "midpoint_distance_m": 515.0,
   "start_elevation_m": 136.48870388553203,
   "end_elevation_m": 145.64877274302938,
   "start_xy": [
    1720623.3536594524,
    6067102.336634662
   ],
   "end_xy": [
    1720624.0471349095,
    6067152.16455559
   ]
  },
  "max_100m": {
   "gradient_pct": 13.018664059502328,
   "start_distance_m": 442.0,
   "end_distance_m": 542.0,
   "midpoint_distance_m": 492.0,
   "start_elevation_m": 132.85015562712942,
   "end_elevation_m": 145.86881968663175,
   "start_xy": [
    1720632.736109009,
    6067055.497671137
   ],
   "end_xy": [
    1720624.3122527897,
    6067154.146905836
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.3802787627298585,
   "start_distance_m": 170.0,
   "end_distance_m": 175.0,
   "midpoint_distance_m": 172.5,
   "start_elevation_m": 107.60427116550942,
   "end_elevation_m": 107.28525722737292,
   "start_xy": [
    1720739.2645710902,
    6066870.970375303
   ],
   "end_xy": [
    1720734.677593353,
    6066872.960258525
   ]
  },
  "min_10m": {
   "gradient_pct": -3.5351300659300477,
   "start_distance_m": 167.0,
   "end_distance_m": 177.0,
   "midpoint_distance_m": 172.0,
   "start_elevation_m": 107.59207503706163,
   "end_elevation_m": 107.23856203046863,
   "start_xy": [
    1720739.1613774681,
    6066870.084247203
   ],
   "end_xy": [
    1720732.842802258,
    6066873.7562118145
   ]
  },
  "min_20m": {
   "gradient_pct": -0.35519938507874826,
   "start_distance_m": 158.0,
   "end_distance_m": 178.0,
   "midpoint_distance_m": 168.0,
   "start_elevation_m": 107.32271325102508,
   "end_elevation_m": 107.25167337400933,
   "start_xy": [
    1720730.331156353,
    6066868.344363569
   ],
   "end_xy": [
    1720731.9254067105,
    6066874.154188459
   ]
  },
  "min_25m": {
   "gradient_pct": 0.20623475810327818,
   "start_distance_m": 153.0,
   "end_distance_m": 178.0,
   "midpoint_distance_m": 165.5,
   "start_elevation_m": 107.20011468448351,
   "end_elevation_m": 107.25167337400933,
   "start_xy": [
    1720725.4254779557,
    6066867.377761551
   ],
   "end_xy": [
    1720731.9254067105,
    6066874.154188459
   ]
  },
  "min_50m": {
   "gradient_pct": 1.442448797834345,
   "start_distance_m": 128.0,
   "end_distance_m": 178.0,
   "midpoint_distance_m": 153.0,
   "start_elevation_m": 106.53044897509216,
   "end_elevation_m": 107.25167337400933,
   "start_xy": [
    1720700.8970859689,
    6066862.544751461
   ],
   "end_xy": [
    1720731.9254067105,
    6066874.154188459
   ]
  },
  "min_100m": {
   "gradient_pct": 1.927982385585537,
   "start_distance_m": 78.0,
   "end_distance_m": 178.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 105.32369098842379,
   "end_elevation_m": 107.25167337400933,
   "start_xy": [
    1720651.6268176052,
    6066854.261004954
   ],
   "end_xy": [
    1720731.9254067105,
    6066874.154188459
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.116775933342694,
   "start_distance_m": 532.0,
   "end_distance_m": 534.0,
   "midpoint_distance_m": 533.0,
   "start_elevation_m": 144.02346309690984,
   "end_elevation_m": 144.5257986155767,
   "start_xy": [
    1720622.9870232649,
    6067144.235106472
   ],
   "end_xy": [
    1720623.252051176,
    6067146.217468752
   ]
  },
  "max_3m": {
   "gradient_pct": 24.27070619402798,
   "start_distance_m": 532.0,
   "end_distance_m": 535.0,
   "midpoint_distance_m": 533.5,
   "start_elevation_m": 144.02346309690984,
   "end_elevation_m": 144.75158428273068,
   "start_xy": [
    1720622.9870232649,
    6067144.235106472
   ],
   "end_xy": [
    1720623.3845651315,
    6067147.208649891
   ]
  }
 },
 "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": 0.31,
   "obstruction_max_height_m": 27.73,
   "flagged_windows_m": [
    50,
    100
   ]
  },
  "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-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/AW30.tiff"
  ],
  "calculated_at": "2026-09-28T05:16:43+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": [
   "AW30"
  ],
  "route_summit_trim_m": 163.1,
  "route_summit_trim_loss_m": 7.2,
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 30,
   "stations_resolved": 30,
   "width_median_m": 4.62,
   "width_p10_m": 3.48,
   "width_min_m": 3.25,
   "width_max_m": 9.0,
   "bounded_share": 0.333,
   "unbounded_share": 0.667,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.75,
   "window_m": [
    513.0,
    538.0
   ],
   "width_at_max25_m": 4.0,
   "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": 30,
    "stations_resolved": 30,
    "width_median_m": 1.88,
    "width_p10_m": 0.95,
    "width_min_m": 0.5,
    "width_max_m": 11.75,
    "bounded_share": 0.833,
    "unbounded_share": 0.167,
    "confidence_median": 1.0,
    "width_median_bounded_m": 1.25,
    "window_m": [
     513.0,
     538.0
    ],
    "width_at_max25_m": 3.75,
    "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": "Bay of Islands",
  "county": "Northland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}