{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-41.1042, 172.9582)",
 "slug": "discovered-lane-41-1042-172-9582",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.4158876998346,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 432.0,
   "end_distance_m": 434.0,
   "start_elevation_m": 84.71415881247786,
   "end_elevation_m": 85.58247656647455,
   "min_gradient_pct": -26.481413220243866,
   "suppressed_max_gradient_pct": 56.98460845440998,
   "suppressed_location_m": [
    33.0,
    35.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 35.48263295638172,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 120.0,
   "end_distance_m": 123.0,
   "start_elevation_m": 31.072100833878512,
   "end_elevation_m": 32.13657982256996,
   "min_gradient_pct": -14.111750235521233,
   "suppressed_max_gradient_pct": 57.65974803903499,
   "suppressed_location_m": [
    33.0,
    36.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.646331535952328,
   "diagnostic": false,
   "flags": [
    "suppression_unstable",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 202.0,
   "end_distance_m": 207.0,
   "start_elevation_m": 43.09595247232439,
   "end_elevation_m": 44.67826904912201,
   "min_gradient_pct": -5.650734044090768,
   "suppressed_max_gradient_pct": 50.15210355896727,
   "suppressed_location_m": [
    32.0,
    37.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.66793708948661,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 202.0,
   "end_distance_m": 212.0,
   "start_elevation_m": 43.09595247232439,
   "end_elevation_m": 45.86274618127305,
   "min_gradient_pct": -1.560172902042325,
   "suppressed_max_gradient_pct": 35.41873369184749,
   "suppressed_location_m": [
    27.0,
    37.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.291865924833168,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 199.0,
   "end_distance_m": 219.0,
   "start_elevation_m": 42.225058124079446,
   "end_elevation_m": 47.28343130904608,
   "min_gradient_pct": -1.4164439519049665
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.199161690114494,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 199.0,
   "end_distance_m": 224.0,
   "start_elevation_m": 42.225058124079446,
   "end_elevation_m": 48.27484854660807,
   "min_gradient_pct": -0.9015227901757044
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.860478063168472,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 199.0,
   "end_distance_m": 249.0,
   "start_elevation_m": 42.225058124079446,
   "end_elevation_m": 53.65529715566368,
   "min_gradient_pct": 1.500421214539756
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.137435344881418,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 199.0,
   "end_distance_m": 299.0,
   "start_elevation_m": 42.225058124079446,
   "end_elevation_m": 63.362493468960864,
   "min_gradient_pct": 5.229417750422783
  }
 ],
 "shape": {
  "ascent_concentration": 0.302,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 620.0,
  "shape_class": "sustained"
 },
 "length_m": 1034.7160103080803,
 "start_elevation_m": 14.19694386237648,
 "end_elevation_m": 168.49474776687947,
 "endpoint_gain_m": 154.29780390450298,
 "overall_gradient_pct": 14.912092049156731,
 "accumulated_ascent_m": 157.15410774502172,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.646331535952328,
   "start_distance_m": 202.0,
   "end_distance_m": 207.0,
   "midpoint_distance_m": 204.5,
   "start_elevation_m": 43.09595247232439,
   "end_elevation_m": 44.67826904912201,
   "start_xy": [
    1596665.5282805916,
    5449430.408063414
   ],
   "end_xy": [
    1596660.9962414345,
    5449432.520081662
   ]
  },
  "max_10m": {
   "gradient_pct": 27.66793708948661,
   "start_distance_m": 202.0,
   "end_distance_m": 212.0,
   "midpoint_distance_m": 207.0,
   "start_elevation_m": 43.09595247232439,
   "end_elevation_m": 45.86274618127305,
   "start_xy": [
    1596665.5282805916,
    5449430.408063414
   ],
   "end_xy": [
    1596656.4642022776,
    5449434.63209991
   ]
  },
  "max_20m": {
   "gradient_pct": 25.291865924833168,
   "start_distance_m": 199.0,
   "end_distance_m": 219.0,
   "midpoint_distance_m": 209.0,
   "start_elevation_m": 42.225058124079446,
   "end_elevation_m": 47.28343130904608,
   "start_xy": [
    1596668.34318411,
    5449429.433353518
   ],
   "end_xy": [
    1596650.6272619113,
    5449438.335054426
   ]
  },
  "max_25m": {
   "gradient_pct": 24.199161690114494,
   "start_distance_m": 199.0,
   "end_distance_m": 224.0,
   "midpoint_distance_m": 211.5,
   "start_elevation_m": 42.225058124079446,
   "end_elevation_m": 48.27484854660807,
   "start_xy": [
    1596668.34318411,
    5449429.433353518
   ],
   "end_xy": [
    1596647.0005325258,
    5449441.776977431
   ]
  },
  "max_50m": {
   "gradient_pct": 22.860478063168472,
   "start_distance_m": 199.0,
   "end_distance_m": 249.0,
   "midpoint_distance_m": 224.0,
   "start_elevation_m": 42.225058124079446,
   "end_elevation_m": 53.65529715566368,
   "start_xy": [
    1596668.34318411,
    5449429.433353518
   ],
   "end_xy": [
    1596636.399576183,
    5449463.661765441
   ]
  },
  "max_100m": {
   "gradient_pct": 21.137435344881418,
   "start_distance_m": 199.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 249.0,
   "start_elevation_m": 42.225058124079446,
   "end_elevation_m": 63.362493468960864,
   "start_xy": [
    1596668.34318411,
    5449429.433353518
   ],
   "end_xy": [
    1596624.2036232508,
    5449510.752020884
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.650734044090768,
   "start_distance_m": 1026.0,
   "end_distance_m": 1031.0,
   "midpoint_distance_m": 1028.5,
   "start_elevation_m": 168.4651920476397,
   "end_elevation_m": 168.18265534543517,
   "start_xy": [
    1596136.7592747496,
    5449771.140402764
   ],
   "end_xy": [
    1596131.8434506243,
    5449772.054007257
   ]
  },
  "min_10m": {
   "gradient_pct": -1.560172902042325,
   "start_distance_m": 853.0,
   "end_distance_m": 863.0,
   "midpoint_distance_m": 858.0,
   "start_elevation_m": 150.08543643135658,
   "end_elevation_m": 149.92941914115235,
   "start_xy": [
    1596245.8013112778,
    5449792.753295563
   ],
   "end_xy": [
    1596238.1904742038,
    5449786.266758811
   ]
  },
  "min_20m": {
   "gradient_pct": -1.4164439519049665,
   "start_distance_m": 844.0,
   "end_distance_m": 864.0,
   "midpoint_distance_m": 854.0,
   "start_elevation_m": 150.18584739916622,
   "end_elevation_m": 149.90255860878523,
   "start_xy": [
    1596252.651064644,
    5449798.59117864
   ],
   "end_xy": [
    1596237.4293904963,
    5449785.618105136
   ]
  },
  "min_25m": {
   "gradient_pct": -0.9015227901757044,
   "start_distance_m": 840.0,
   "end_distance_m": 865.0,
   "midpoint_distance_m": 852.5,
   "start_elevation_m": 150.13104468493734,
   "end_elevation_m": 149.9056639873934,
   "start_xy": [
    1596255.695399474,
    5449801.18579334
   ],
   "end_xy": [
    1596236.668306789,
    5449784.96945146
   ]
  },
  "min_50m": {
   "gradient_pct": 1.500421214539756,
   "start_distance_m": 820.0,
   "end_distance_m": 870.0,
   "midpoint_distance_m": 845.0,
   "start_elevation_m": 149.29648235907084,
   "end_elevation_m": 150.04669296634071,
   "start_xy": [
    1596274.1936362234,
    5449807.631991348
   ],
   "end_xy": [
    1596232.862888252,
    5449781.726183085
   ]
  },
  "min_100m": {
   "gradient_pct": 5.229417750422783,
   "start_distance_m": 805.0,
   "end_distance_m": 905.0,
   "midpoint_distance_m": 855.0,
   "start_elevation_m": 147.9985775415511,
   "end_elevation_m": 153.22799529197388,
   "start_xy": [
    1596288.816564797,
    5449810.974140348
   ],
   "end_xy": [
    1596198.7934518277,
    5449785.86013805
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.4158876998346,
   "start_distance_m": 432.0,
   "end_distance_m": 434.0,
   "midpoint_distance_m": 433.0,
   "start_elevation_m": 84.71415881247786,
   "end_elevation_m": 85.58247656647455,
   "start_xy": [
    1596547.4066595093,
    5449613.824955846
   ],
   "end_xy": [
    1596546.4692419865,
    5449615.591661365
   ]
  },
  "max_3m": {
   "gradient_pct": 35.48263295638172,
   "start_distance_m": 120.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 121.5,
   "start_elevation_m": 31.072100833878512,
   "end_elevation_m": 32.13657982256996,
   "start_xy": [
    1596732.5651554568,
    5449465.407328146
   ],
   "end_xy": [
    1596729.84252286,
    5449464.147458414
   ]
  }
 },
 "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": 0.006,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.02,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 10.0,
     "start_m": 27.0,
     "end_m": 37.0,
     "raw_pct": 35.42,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": [],
   "unstable": [
    {
     "window_m": 5.0,
     "start_m": 32.0,
     "end_m": 37.0,
     "raw_pct": 50.15,
     "reason": "short-step",
     "perturbations": [
      "phase+0.000/mask+0",
      "phase+0.333/mask+1",
      "phase+0.667/mask-1"
     ],
     "perturbation_reasons": [
      "",
      "short-step",
      "short-step"
     ]
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.238,
   "obstruction_max_height_m": 10.75,
   "flagged_windows_m": [
    2,
    3,
    5.0,
    10,
    20,
    25,
    50
   ]
  },
  "excluded_ranges_m": [
   [
    25.0,
    39.0
   ],
   [
    91.0,
    96.0
   ]
  ],
  "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-n1",
   "road_pbf": "block-batch-nz-n1.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:ff0dec6edae18a40"
  },
  "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/BP25.tiff"
  ],
  "calculated_at": "2026-09-28T05:13:28+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-n1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-n1",
  "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": [
   "BP25"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "suppression_unstable": [
   5.0
  ],
  "carriageway": {
   "stations": 48,
   "stations_resolved": 48,
   "width_median_m": 4.12,
   "width_p10_m": 1.25,
   "width_min_m": 1.0,
   "width_max_m": 11.75,
   "bounded_share": 0.271,
   "unbounded_share": 0.729,
   "confidence_median": 0.0,
   "width_median_bounded_m": 1.5,
   "window_m": [
    199.0,
    224.0
   ],
   "width_at_max25_m": 1.5,
   "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": 48,
    "stations_resolved": 48,
    "width_median_m": 3.0,
    "width_p10_m": 1.6,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.833,
    "unbounded_share": 0.167,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.5,
    "window_m": [
     199.0,
     224.0
    ],
    "width_at_max25_m": 2.5,
    "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": "Tasman",
  "county": "Tasman",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}