{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-41.2080, 175.0321)",
 "slug": "discovered-lane-41-2080-175-0321",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.559702579252644,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 785.0,
   "end_distance_m": 787.0,
   "start_elevation_m": 283.8118592157613,
   "end_elevation_m": 284.3830532673463,
   "min_gradient_pct": -14.613151638630484,
   "suppressed_max_gradient_pct": 46.31027414166624,
   "suppressed_location_m": [
    602.0,
    604.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.235712890616924,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded_min"
   ],
   "start_distance_m": 784.0,
   "end_distance_m": 787.0,
   "start_elevation_m": 283.6259818806278,
   "end_elevation_m": 284.3830532673463,
   "min_gradient_pct": -11.097252008602254,
   "suppressed_max_gradient_pct": 43.498644078259,
   "suppressed_location_m": [
    601.0,
    604.0
   ],
   "suppressed_min_gradient_pct": -11.469367429267171,
   "suppressed_min_location_m": [
    623.0,
    626.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.64700877647124,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 653.0,
   "end_distance_m": 658.0,
   "start_elevation_m": 267.01529805294075,
   "end_elevation_m": 268.1976484917643,
   "min_gradient_pct": -10.341970558090452,
   "suppressed_max_gradient_pct": 41.193081316301914,
   "suppressed_location_m": [
    602.0,
    607.0
   ],
   "suppressed_min_gradient_pct": -11.99523593919821,
   "suppressed_min_location_m": [
    623.0,
    628.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.308632922530478,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 646.0,
   "end_distance_m": 656.0,
   "start_elevation_m": 265.4883359199121,
   "end_elevation_m": 267.71919921216517,
   "min_gradient_pct": -4.090790734523466,
   "suppressed_max_gradient_pct": 37.77167352679896,
   "suppressed_location_m": [
    599.0,
    609.0
   ],
   "suppressed_min_gradient_pct": -8.719041744737979,
   "suppressed_min_location_m": [
    622.0,
    632.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.126116870439944,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 646.0,
   "end_distance_m": 666.0,
   "start_elevation_m": 265.4883359199121,
   "end_elevation_m": 269.7135592940001,
   "min_gradient_pct": -1.7236893463281433,
   "suppressed_max_gradient_pct": 34.70057470346063,
   "suppressed_location_m": [
    601.0,
    621.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.031369217613474,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 645.0,
   "end_distance_m": 670.0,
   "start_elevation_m": 265.31086880622894,
   "end_elevation_m": 270.5687111106323,
   "min_gradient_pct": -0.9235661397785861,
   "suppressed_max_gradient_pct": 33.07675749913642,
   "suppressed_location_m": [
    597.0,
    622.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.74164279933359,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 638.0,
   "end_distance_m": 688.0,
   "start_elevation_m": 264.0667393449985,
   "end_elevation_m": 273.4375607446653,
   "min_gradient_pct": 0.39424115118168856,
   "suppressed_max_gradient_pct": 22.27230024982771,
   "suppressed_location_m": [
    572.0,
    622.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.727786170641082,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 637.0,
   "end_distance_m": 737.0,
   "start_elevation_m": 263.9505795800049,
   "end_elevation_m": 278.678365750646,
   "min_gradient_pct": 1.3234517639748162,
   "suppressed_max_gradient_pct": 18.4126454341405,
   "suppressed_location_m": [
    594.0,
    694.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.508,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 82.0,
  "shape_class": "stepped"
 },
 "length_m": 813.579216622822,
 "start_elevation_m": 228.4390456049511,
 "end_elevation_m": 285.56814654883465,
 "endpoint_gain_m": 57.12910094388354,
 "overall_gradient_pct": 7.021946944641383,
 "accumulated_ascent_m": 60.838963884611815,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.64700877647124,
   "start_distance_m": 653.0,
   "end_distance_m": 658.0,
   "midpoint_distance_m": 655.5,
   "start_elevation_m": 267.01529805294075,
   "end_elevation_m": 268.1976484917643,
   "start_xy": [
    1770425.7776501987,
    5436060.618577048
   ],
   "end_xy": [
    1770425.0887805205,
    5436055.666258544
   ]
  },
  "max_10m": {
   "gradient_pct": 22.308632922530478,
   "start_distance_m": 646.0,
   "end_distance_m": 656.0,
   "midpoint_distance_m": 651.0,
   "start_elevation_m": 265.4883359199121,
   "end_elevation_m": 267.71919921216517,
   "start_xy": [
    1770425.6705792805,
    5436067.540852902
   ],
   "end_xy": [
    1770425.3643283918,
    5436057.647185946
   ]
  },
  "max_20m": {
   "gradient_pct": 21.126116870439944,
   "start_distance_m": 646.0,
   "end_distance_m": 666.0,
   "midpoint_distance_m": 656.0,
   "start_elevation_m": 265.4883359199121,
   "end_elevation_m": 269.7135592940001,
   "start_xy": [
    1770425.6705792805,
    5436067.540852902
   ],
   "end_xy": [
    1770423.9865890355,
    5436047.742548938
   ]
  },
  "max_25m": {
   "gradient_pct": 21.031369217613474,
   "start_distance_m": 645.0,
   "end_distance_m": 670.0,
   "midpoint_distance_m": 657.5,
   "start_elevation_m": 265.31086880622894,
   "end_elevation_m": 270.5687111106323,
   "start_xy": [
    1770425.5125553336,
    5436068.528288183
   ],
   "end_xy": [
    1770423.435493293,
    5436043.7806941345
   ]
  },
  "max_50m": {
   "gradient_pct": 18.74164279933359,
   "start_distance_m": 638.0,
   "end_distance_m": 688.0,
   "midpoint_distance_m": 663.0,
   "start_elevation_m": 264.0667393449985,
   "end_elevation_m": 273.4375607446653,
   "start_xy": [
    1770424.4063877047,
    5436075.440335142
   ],
   "end_xy": [
    1770415.6211824503,
    5436027.703331766
   ]
  },
  "max_100m": {
   "gradient_pct": 14.727786170641082,
   "start_distance_m": 637.0,
   "end_distance_m": 737.0,
   "midpoint_distance_m": 687.0,
   "start_elevation_m": 263.9505795800049,
   "end_elevation_m": 278.678365750646,
   "start_xy": [
    1770424.2483637575,
    5436076.427770423
   ],
   "end_xy": [
    1770410.1011680334,
    5435979.385176302
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.341970558090452,
   "start_distance_m": 626.0,
   "end_distance_m": 631.0,
   "midpoint_distance_m": 628.5,
   "start_elevation_m": 264.1476471155853,
   "end_elevation_m": 263.6305485876808,
   "start_xy": [
    1770417.5346216613,
    5436084.910741614
   ],
   "end_xy": [
    1770420.9821080915,
    5436081.438976286
   ]
  },
  "min_10m": {
   "gradient_pct": -4.090790734523466,
   "start_distance_m": 625.0,
   "end_distance_m": 635.0,
   "midpoint_distance_m": 630.0,
   "start_elevation_m": 264.2193718341628,
   "end_elevation_m": 263.81029276071047,
   "start_xy": [
    1770416.68845172,
    5436085.443654768
   ],
   "end_xy": [
    1770423.2142267476,
    5436078.119692281
   ]
  },
  "min_20m": {
   "gradient_pct": -1.7236893463281433,
   "start_distance_m": 182.0,
   "end_distance_m": 202.0,
   "midpoint_distance_m": 192.0,
   "start_elevation_m": 234.77357763241017,
   "end_elevation_m": 234.42883976314454,
   "start_xy": [
    1770527.5433570272,
    5436426.526038279
   ],
   "end_xy": [
    1770511.4246608193,
    5436414.686819741
   ]
  },
  "min_25m": {
   "gradient_pct": -0.9235661397785861,
   "start_distance_m": 182.0,
   "end_distance_m": 207.0,
   "midpoint_distance_m": 194.5,
   "start_elevation_m": 234.77357763241017,
   "end_elevation_m": 234.54268609746552,
   "start_xy": [
    1770527.5433570272,
    5436426.526038279
   ],
   "end_xy": [
    1770507.4263446692,
    5436411.684575919
   ]
  },
  "min_50m": {
   "gradient_pct": 0.39424115118168856,
   "start_distance_m": 170.0,
   "end_distance_m": 220.0,
   "midpoint_distance_m": 195.0,
   "start_elevation_m": 234.58558094804548,
   "end_elevation_m": 234.78270152363632,
   "start_xy": [
    1770537.2492678047,
    5436433.582616485
   ],
   "end_xy": [
    1770497.0307226789,
    5436403.878741983
   ]
  },
  "min_100m": {
   "gradient_pct": 1.3234517639748162,
   "start_distance_m": 171.0,
   "end_distance_m": 271.0,
   "midpoint_distance_m": 221.0,
   "start_elevation_m": 234.5829664330372,
   "end_elevation_m": 235.90641819701202,
   "start_xy": [
    1770536.4404419065,
    5436432.994568301
   ],
   "end_xy": [
    1770458.0072783402,
    5436371.058215465
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.559702579252644,
   "start_distance_m": 785.0,
   "end_distance_m": 787.0,
   "midpoint_distance_m": 786.0,
   "start_elevation_m": 283.8118592157613,
   "end_elevation_m": 284.3830532673463,
   "start_xy": [
    1770409.270736078,
    5435931.6427354505
   ],
   "end_xy": [
    1770409.2507730902,
    5435929.6428350825
   ]
  },
  "max_3m": {
   "gradient_pct": 25.235712890616924,
   "start_distance_m": 784.0,
   "end_distance_m": 787.0,
   "midpoint_distance_m": 785.5,
   "start_elevation_m": 283.6259818806278,
   "end_elevation_m": 284.3830532673463,
   "start_xy": [
    1770409.2807175722,
    5435932.642685634
   ],
   "end_xy": [
    1770409.2507730902,
    5435929.6428350825
   ]
  }
 },
 "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": {
  "texture_suppression": {
   "masked_fraction": 0.037,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    3.0,
    5.0,
    10.0
   ],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 597.0,
     "end_m": 622.0,
     "raw_pct": 33.08,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 601.0,
     "end_m": 621.0,
     "raw_pct": 34.7,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 599.0,
     "end_m": 609.0,
     "raw_pct": 37.77,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 602.0,
     "end_m": 607.0,
     "raw_pct": 41.19,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.045,
   "obstruction_max_height_m": 5.39,
   "flagged_windows_m": [
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    595.0,
    624.0
   ]
  ],
  "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/BQ32.tiff"
  ],
  "calculated_at": "2026-09-28T05:16:22+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": [
   "BQ32"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 38,
   "stations_resolved": 38,
   "width_median_m": 4.62,
   "width_p10_m": 2.25,
   "width_min_m": 1.5,
   "width_max_m": 12.0,
   "bounded_share": 0.263,
   "unbounded_share": 0.737,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.5,
   "window_m": [
    645.0,
    670.0
   ],
   "width_at_max25_m": 2.5,
   "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": 38,
    "stations_resolved": 38,
    "width_median_m": 6.38,
    "width_p10_m": 2.0,
    "width_min_m": 1.25,
    "width_max_m": 12.0,
    "bounded_share": 0.526,
    "unbounded_share": 0.474,
    "confidence_median": 0.899,
    "width_median_bounded_m": 3.62,
    "window_m": [
     645.0,
     670.0
    ],
    "width_at_max25_m": 2.0,
    "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": "Featherston Community",
  "county": "Wellington",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}