{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-36.7442, 174.6755)",
 "slug": "discovered-lane-36-7442-174-6755",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.688175517993074,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "placement_excluded",
    "placement_excluded_min"
   ],
   "start_distance_m": 21.0,
   "end_distance_m": 23.0,
   "start_elevation_m": 29.209282316739262,
   "end_elevation_m": 29.743045827099124,
   "min_gradient_pct": -16.177210850980472,
   "suppressed_max_gradient_pct": 64.64677131701286,
   "suppressed_location_m": [
    177.0,
    179.0
   ],
   "suppressed_min_gradient_pct": -35.21952050934303,
   "suppressed_min_location_m": [
    193.0,
    195.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.232521518864143,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "placement_excluded",
    "placement_excluded_min"
   ],
   "start_distance_m": 21.0,
   "end_distance_m": 24.0,
   "start_elevation_m": 29.209282316739262,
   "end_elevation_m": 29.996257962305187,
   "min_gradient_pct": -14.200378241556185,
   "suppressed_max_gradient_pct": 61.39400832869105,
   "suppressed_location_m": [
    176.0,
    179.0
   ],
   "suppressed_min_gradient_pct": -34.75370490032148,
   "suppressed_min_location_m": [
    192.0,
    195.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.90758336869817,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "placement_excluded",
    "placement_excluded_min"
   ],
   "start_distance_m": 21.0,
   "end_distance_m": 26.0,
   "start_elevation_m": 29.209282316739262,
   "end_elevation_m": 30.45466148517417,
   "min_gradient_pct": -13.294180943331071,
   "suppressed_max_gradient_pct": 53.303374886336314,
   "suppressed_location_m": [
    175.0,
    180.0
   ],
   "suppressed_min_gradient_pct": -27.338323944600944,
   "suppressed_min_location_m": [
    191.0,
    196.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.77475702542116,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "placement_excluded_min"
   ],
   "start_distance_m": 17.0,
   "end_distance_m": 27.0,
   "start_elevation_m": 28.38361442348132,
   "end_elevation_m": 30.661090126023435,
   "min_gradient_pct": -11.521366141887768,
   "suppressed_max_gradient_pct": 35.982234546280054,
   "suppressed_location_m": [
    171.0,
    181.0
   ],
   "suppressed_min_gradient_pct": -17.943920545642484,
   "suppressed_min_location_m": [
    191.0,
    201.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.41130073645725,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "placement_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 310.0,
   "end_distance_m": 330.0,
   "start_elevation_m": 52.166414513742595,
   "end_elevation_m": 56.248674661034045,
   "min_gradient_pct": -8.445911685615073,
   "suppressed_max_gradient_pct": 21.95929252307092,
   "suppressed_location_m": [
    168.0,
    188.0
   ],
   "suppressed_min_gradient_pct": -9.021496844451313,
   "suppressed_min_location_m": [
    191.0,
    211.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.252223936850328,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 306.0,
   "end_distance_m": 331.0,
   "start_elevation_m": 51.38615305023623,
   "end_elevation_m": 56.44920903444881,
   "min_gradient_pct": -7.034467972653459
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.770387253586847,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 296.0,
   "end_distance_m": 346.0,
   "start_elevation_m": 49.63459911446621,
   "end_elevation_m": 59.019792741259636,
   "min_gradient_pct": -1.8392583569676333
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.947021034064022,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 237.0,
   "end_distance_m": 337.0,
   "start_elevation_m": 39.581319205450576,
   "end_elevation_m": 57.5283402395146,
   "min_gradient_pct": 0.45634307694748344
  }
 ],
 "shape": {
  "ascent_concentration": 0.356,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 135.0,
  "shape_class": "sustained"
 },
 "length_m": 960.891027103827,
 "start_elevation_m": 26.192565436238024,
 "end_elevation_m": 102.14530008346176,
 "endpoint_gain_m": 75.95273464722374,
 "overall_gradient_pct": 7.904406691791995,
 "accumulated_ascent_m": 83.62123266915893,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.90758336869817,
   "start_distance_m": 21.0,
   "end_distance_m": 26.0,
   "midpoint_distance_m": 23.5,
   "start_elevation_m": 29.209282316739262,
   "end_elevation_m": 30.45466148517417,
   "start_xy": [
    1749730.008331992,
    5932180.513509771
   ],
   "end_xy": [
    1749725.151744371,
    5932181.702440669
   ]
  },
  "max_10m": {
   "gradient_pct": 22.77475702542116,
   "start_distance_m": 17.0,
   "end_distance_m": 27.0,
   "midpoint_distance_m": 22.0,
   "start_elevation_m": 28.38361442348132,
   "end_elevation_m": 30.661090126023435,
   "start_xy": [
    1749733.8936020888,
    5932179.562365052
   ],
   "end_xy": [
    1749724.1804268467,
    5932181.940226848
   ]
  },
  "max_20m": {
   "gradient_pct": 20.41130073645725,
   "start_distance_m": 310.0,
   "end_distance_m": 330.0,
   "midpoint_distance_m": 320.0,
   "start_elevation_m": 52.166414513742595,
   "end_elevation_m": 56.248674661034045,
   "start_xy": [
    1749449.4403776133,
    5932189.950457065
   ],
   "end_xy": [
    1749429.8210926997,
    5932186.112473281
   ]
  },
  "max_25m": {
   "gradient_pct": 20.252223936850328,
   "start_distance_m": 306.0,
   "end_distance_m": 331.0,
   "midpoint_distance_m": 318.5,
   "start_elevation_m": 51.38615305023623,
   "end_elevation_m": 56.44920903444881,
   "start_xy": [
    1749453.4305400655,
    5932190.230820412
   ],
   "end_xy": [
    1749428.8410979465,
    5932185.913449956
   ]
  },
  "max_50m": {
   "gradient_pct": 18.770387253586847,
   "start_distance_m": 296.0,
   "end_distance_m": 346.0,
   "midpoint_distance_m": 321.0,
   "start_elevation_m": 49.63459911446621,
   "end_elevation_m": 59.019792741259636,
   "start_xy": [
    1749463.4059461958,
    5932190.931728777
   ],
   "end_xy": [
    1749414.3549844248,
    5932182.143499837
   ]
  },
  "max_100m": {
   "gradient_pct": 17.947021034064022,
   "start_distance_m": 237.0,
   "end_distance_m": 337.0,
   "midpoint_distance_m": 287.0,
   "start_elevation_m": 39.581319205450576,
   "end_elevation_m": 57.5283402395146,
   "start_xy": [
    1749522.1015659063,
    5932185.141514422
   ],
   "end_xy": [
    1749422.9611294274,
    5932184.719310008
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -13.294180943331071,
   "start_distance_m": 153.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 155.5,
   "start_elevation_m": 35.63017383264326,
   "end_elevation_m": 34.965464785476705,
   "start_xy": [
    1749603.2595432582,
    5932193.629233162
   ],
   "end_xy": [
    1749598.39730774,
    5932194.794851352
   ]
  },
  "min_10m": {
   "gradient_pct": -11.521366141887768,
   "start_distance_m": 149.0,
   "end_distance_m": 159.0,
   "midpoint_distance_m": 154.0,
   "start_elevation_m": 36.01776393409542,
   "end_elevation_m": 34.86562731990664,
   "start_xy": [
    1749607.0909009348,
    5932192.4807966035
   ],
   "end_xy": [
    1749597.4248606365,
    5932195.027974991
   ]
  },
  "min_20m": {
   "gradient_pct": -8.445911685615073,
   "start_distance_m": 142.0,
   "end_distance_m": 162.0,
   "midpoint_distance_m": 152.0,
   "start_elevation_m": 36.3939427133045,
   "end_elevation_m": 34.70476037618148,
   "start_xy": [
    1749613.792115751,
    5932190.457502263
   ],
   "end_xy": [
    1749594.5075193257,
    5932195.727345905
   ]
  },
  "min_25m": {
   "gradient_pct": -7.034467972653459,
   "start_distance_m": 48.0,
   "end_distance_m": 73.0,
   "midpoint_distance_m": 60.5,
   "start_elevation_m": 31.949282414197867,
   "end_elevation_m": 30.190665421034502,
   "start_xy": [
    1749703.5182387389,
    5932185.605764525
   ],
   "end_xy": [
    1749679.7112571339,
    5932179.171003652
   ]
  },
  "min_50m": {
   "gradient_pct": -1.8392583569676333,
   "start_distance_m": 370.0,
   "end_distance_m": 420.0,
   "midpoint_distance_m": 395.0,
   "start_elevation_m": 61.26284662912425,
   "end_elevation_m": 60.34321745064043,
   "start_xy": [
    1749391.0901018518,
    5932176.825016902
   ],
   "end_xy": [
    1749413.785180596,
    5932220.654337426
   ]
  },
  "min_100m": {
   "gradient_pct": 0.45634307694748344,
   "start_distance_m": 367.0,
   "end_distance_m": 467.0,
   "midpoint_distance_m": 417.0,
   "start_elevation_m": 61.09648830057641,
   "end_elevation_m": 61.552831377523894,
   "start_xy": [
    1749394.0686937727,
    5932177.182774038
   ],
   "end_xy": [
    1749435.682179015,
    5932262.241853103
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.688175517993074,
   "start_distance_m": 21.0,
   "end_distance_m": 23.0,
   "midpoint_distance_m": 22.0,
   "start_elevation_m": 29.209282316739262,
   "end_elevation_m": 29.743045827099124,
   "start_xy": [
    1749730.008331992,
    5932180.513509771
   ],
   "end_xy": [
    1749728.0656969436,
    5932180.98908213
   ]
  },
  "max_3m": {
   "gradient_pct": 26.232521518864143,
   "start_distance_m": 21.0,
   "end_distance_m": 24.0,
   "midpoint_distance_m": 22.5,
   "start_elevation_m": 29.209282316739262,
   "end_elevation_m": 29.996257962305187,
   "start_xy": [
    1749730.008331992,
    5932180.513509771
   ],
   "end_xy": [
    1749727.0943794192,
    5932181.226868309
   ]
  }
 },
 "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": 0.007,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "placement_suppression": {
   "masked_fraction": 0.032,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.229,
   "obstruction_max_height_m": 29.75,
   "flagged_windows_m": [
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    170.0,
    200.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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": "2026-09-28T05:06:50+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": 2,
  "carriageway": {
   "stations": 45,
   "stations_resolved": 45,
   "width_median_m": 8.0,
   "width_p10_m": 2.1,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.089,
   "unbounded_share": 0.911,
   "confidence_median": 0.0,
   "width_median_bounded_m": 1.38,
   "window_m": [
    306.0,
    331.0
   ],
   "width_at_max25_m": 3.75,
   "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": 45,
    "stations_resolved": 45,
    "width_median_m": 5.25,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.822,
    "unbounded_share": 0.178,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.0,
    "window_m": [
     306.0,
     331.0
    ],
    "width_at_max25_m": 1.0,
    "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": "Upper Harbour",
  "county": "Auckland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}