{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (-35.0157, 173.7726)",
 "slug": "discovered-lane-35-0157-173-7726",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 49.77905050994451,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 263.0,
   "end_distance_m": 265.0,
   "start_elevation_m": 53.079678406115335,
   "end_elevation_m": 54.075259416314225,
   "min_gradient_pct": -18.438404397757502,
   "suppressed_max_gradient_pct": 94.22332235334352,
   "suppressed_location_m": [
    211.0,
    213.0
   ],
   "suppressed_min_gradient_pct": -43.18829266837234,
   "suppressed_min_location_m": [
    371.0,
    373.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 44.39158180817676,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 262.0,
   "end_distance_m": 265.0,
   "start_elevation_m": 52.74351196206892,
   "end_elevation_m": 54.075259416314225,
   "min_gradient_pct": -9.41241993660166,
   "suppressed_max_gradient_pct": 86.69979085472123,
   "suppressed_location_m": [
    211.0,
    214.0
   ],
   "suppressed_min_gradient_pct": -41.994085414585435,
   "suppressed_min_location_m": [
    371.0,
    374.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 40.039727622098695,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 262.0,
   "end_distance_m": 267.0,
   "start_elevation_m": 52.74351196206892,
   "end_elevation_m": 54.74549834317386,
   "min_gradient_pct": -8.453391052246957,
   "suppressed_max_gradient_pct": 76.08399850969548,
   "suppressed_location_m": [
    211.0,
    216.0
   ],
   "suppressed_min_gradient_pct": -34.963493416207,
   "suppressed_min_location_m": [
    370.0,
    375.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.427576745704954,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded",
    "no_bench_excluded_min"
   ],
   "start_distance_m": 112.0,
   "end_distance_m": 122.0,
   "start_elevation_m": 19.984136753072274,
   "end_elevation_m": 22.52689442764277,
   "min_gradient_pct": -5.960684739294919,
   "suppressed_max_gradient_pct": 63.103678939940934,
   "suppressed_location_m": [
    208.0,
    218.0
   ],
   "suppressed_min_gradient_pct": -21.40582010980303,
   "suppressed_min_location_m": [
    363.0,
    373.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.997333900123436,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded_min"
   ],
   "start_distance_m": 1080.0,
   "end_distance_m": 1100.0,
   "start_elevation_m": 105.59900291852267,
   "end_elevation_m": 110.39846969854736,
   "min_gradient_pct": -5.349997857691733,
   "suppressed_max_gradient_pct": 53.83650281113013,
   "suppressed_location_m": [
    211.0,
    231.0
   ],
   "suppressed_min_gradient_pct": -19.787408997003375,
   "suppressed_min_location_m": [
    355.0,
    375.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.702520723918322,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded_min"
   ],
   "start_distance_m": 1078.0,
   "end_distance_m": 1103.0,
   "start_elevation_m": 105.16350645626163,
   "end_elevation_m": 111.08913663724121,
   "min_gradient_pct": -4.909339334212746,
   "suppressed_max_gradient_pct": 51.80304463923338,
   "suppressed_location_m": [
    207.0,
    232.0
   ],
   "suppressed_min_gradient_pct": -19.48855461318206,
   "suppressed_min_location_m": [
    350.0,
    375.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.66248934588344,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded_min"
   ],
   "start_distance_m": 1061.0,
   "end_distance_m": 1111.0,
   "start_elevation_m": 101.47638307269182,
   "end_elevation_m": 112.80762774563354,
   "min_gradient_pct": -4.046415849377439,
   "suppressed_max_gradient_pct": 44.891885405600966,
   "suppressed_location_m": [
    208.0,
    258.0
   ],
   "suppressed_min_gradient_pct": -14.646581363780285,
   "suppressed_min_location_m": [
    339.0,
    389.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.713206151541627,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded_min"
   ],
   "start_distance_m": 1032.0,
   "end_distance_m": 1132.0,
   "start_elevation_m": 96.14467074690559,
   "end_elevation_m": 116.85787689844722,
   "min_gradient_pct": -1.2051631943387164,
   "suppressed_max_gradient_pct": 37.33137205550692,
   "suppressed_location_m": [
    197.0,
    297.0
   ],
   "suppressed_min_gradient_pct": -7.344968565609143,
   "suppressed_min_location_m": [
    314.0,
    414.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.377,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 296.0,
  "shape_class": "sustained"
 },
 "length_m": 1481.2982561933377,
 "start_elevation_m": 2.6912639224887056,
 "end_elevation_m": 160.9441997509903,
 "endpoint_gain_m": 158.2529358285016,
 "overall_gradient_pct": 10.683394459342871,
 "accumulated_ascent_m": 173.98667469981223,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 40.039727622098695,
   "start_distance_m": 262.0,
   "end_distance_m": 267.0,
   "midpoint_distance_m": 264.5,
   "start_elevation_m": 52.74351196206892,
   "end_elevation_m": 54.74549834317386,
   "start_xy": [
    1670077.1428942848,
    6124857.311915074
   ],
   "end_xy": [
    1670079.1957315912,
    6124861.871066201
   ]
  },
  "max_10m": {
   "gradient_pct": 25.427576745704954,
   "start_distance_m": 112.0,
   "end_distance_m": 122.0,
   "midpoint_distance_m": 117.0,
   "start_elevation_m": 19.984136753072274,
   "end_elevation_m": 22.52689442764277,
   "start_xy": [
    1670018.5195051075,
    6124719.350543099
   ],
   "end_xy": [
    1670022.5590583198,
    6124728.486609115
   ]
  },
  "max_20m": {
   "gradient_pct": 23.997333900123436,
   "start_distance_m": 1080.0,
   "end_distance_m": 1100.0,
   "midpoint_distance_m": 1090.0,
   "start_elevation_m": 105.59900291852267,
   "end_elevation_m": 110.39846969854736,
   "start_xy": [
    1670631.5348824402,
    6125170.140967664
   ],
   "end_xy": [
    1670642.3597421094,
    6125186.926829685
   ]
  },
  "max_25m": {
   "gradient_pct": 23.702520723918322,
   "start_distance_m": 1078.0,
   "end_distance_m": 1103.0,
   "midpoint_distance_m": 1090.5,
   "start_elevation_m": 105.16350645626163,
   "end_elevation_m": 111.08913663724121,
   "start_xy": [
    1670630.552997021,
    6125168.398583946
   ],
   "end_xy": [
    1670644.0958975027,
    6125189.373411884
   ]
  },
  "max_50m": {
   "gradient_pct": 22.66248934588344,
   "start_distance_m": 1061.0,
   "end_distance_m": 1111.0,
   "midpoint_distance_m": 1086.0,
   "start_elevation_m": 101.47638307269182,
   "end_elevation_m": 112.80762774563354,
   "start_xy": [
    1670625.4590594182,
    6125152.310354138
   ],
   "end_xy": [
    1670648.725645218,
    6125195.897631078
   ]
  },
  "max_100m": {
   "gradient_pct": 20.713206151541627,
   "start_distance_m": 1032.0,
   "end_distance_m": 1132.0,
   "midpoint_distance_m": 1082.0,
   "start_elevation_m": 96.14467074690559,
   "end_elevation_m": 116.85787689844722,
   "start_xy": [
    1670622.6513005449,
    6125123.496452731
   ],
   "end_xy": [
    1670663.8583869338,
    6125210.361212332
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.453391052246957,
   "start_distance_m": 146.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 148.5,
   "start_elevation_m": 25.68805438426702,
   "end_elevation_m": 25.26538483165467,
   "start_xy": [
    1670031.133643952,
    6124750.892714938
   ],
   "end_xy": [
    1670032.792676475,
    6124755.609452273
   ]
  },
  "min_10m": {
   "gradient_pct": -5.960684739294919,
   "start_distance_m": 836.0,
   "end_distance_m": 846.0,
   "midpoint_distance_m": 841.0,
   "start_elevation_m": 78.80063928529515,
   "end_elevation_m": 78.20457081136566,
   "start_xy": [
    1670519.8353037527,
    6124968.727082642
   ],
   "end_xy": [
    1670527.8877495006,
    6124974.656510732
   ]
  },
  "min_20m": {
   "gradient_pct": -5.349997857691733,
   "start_distance_m": 833.0,
   "end_distance_m": 853.0,
   "midpoint_distance_m": 843.0,
   "start_elevation_m": 78.93628210024292,
   "end_elevation_m": 77.86628252870457,
   "start_xy": [
    1670517.4195700283,
    6124966.948254215
   ],
   "end_xy": [
    1670533.3606132094,
    6124979.020346088
   ]
  },
  "min_25m": {
   "gradient_pct": -4.909339334212746,
   "start_distance_m": 828.0,
   "end_distance_m": 853.0,
   "midpoint_distance_m": 840.5,
   "start_elevation_m": 79.09361736225776,
   "end_elevation_m": 77.86628252870457,
   "start_xy": [
    1670513.3933471544,
    6124963.983540169
   ],
   "end_xy": [
    1670533.3606132094,
    6124979.020346088
   ]
  },
  "min_50m": {
   "gradient_pct": -4.046415849377439,
   "start_distance_m": 809.0,
   "end_distance_m": 859.0,
   "midpoint_distance_m": 834.0,
   "start_elevation_m": 79.73919374109158,
   "end_elevation_m": 77.71598581640286,
   "start_xy": [
    1670498.0937002334,
    6124952.717626798
   ],
   "end_xy": [
    1670538.0425041716,
    6124982.7726649735
   ]
  },
  "min_100m": {
   "gradient_pct": -1.2051631943387164,
   "start_distance_m": 439.0,
   "end_distance_m": 539.0,
   "midpoint_distance_m": 489.0,
   "start_elevation_m": 58.37203371565309,
   "end_elevation_m": 57.16687052131437,
   "start_xy": [
    1670155.7389221836,
    6125012.451192792
   ],
   "end_xy": [
    1670249.0771486394,
    6124978.334082281
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 49.77905050994451,
   "start_distance_m": 263.0,
   "end_distance_m": 265.0,
   "midpoint_distance_m": 264.0,
   "start_elevation_m": 53.079678406115335,
   "end_elevation_m": 54.075259416314225,
   "start_xy": [
    1670077.553461746,
    6124858.2237452995
   ],
   "end_xy": [
    1670078.3745966686,
    6124860.04740575
   ]
  },
  "max_3m": {
   "gradient_pct": 44.39158180817676,
   "start_distance_m": 262.0,
   "end_distance_m": 265.0,
   "midpoint_distance_m": 263.5,
   "start_elevation_m": 52.74351196206892,
   "end_elevation_m": 54.075259416314225,
   "start_xy": [
    1670077.1428942848,
    6124857.311915074
   ],
   "end_xy": [
    1670078.3745966686,
    6124860.04740575
   ]
  }
 },
 "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": 0.037,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.12,
   "windows_resited": [
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.29,
   "obstruction_max_height_m": 47.81,
   "flagged_windows_m": [
    2,
    3,
    5
   ]
  },
  "excluded_ranges_m": [
   [
    206.0,
    260.0
   ],
   [
    268.0,
    390.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "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/AV28.tiff"
  ],
  "calculated_at": "2026-09-28T05:18:43+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": [
   "AV28"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 66,
   "stations_resolved": 66,
   "width_median_m": 4.5,
   "width_p10_m": 3.0,
   "width_min_m": 0.5,
   "width_max_m": 10.25,
   "bounded_share": 0.364,
   "unbounded_share": 0.636,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.38,
   "window_m": [
    1078.0,
    1103.0
   ],
   "width_at_max25_m": 6.75,
   "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": 66,
    "stations_resolved": 66,
    "width_median_m": 4.12,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 10.0,
    "bounded_share": 0.924,
    "unbounded_share": 0.076,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.75,
    "window_m": [
     1078.0,
     1103.0
    ],
    "width_at_max25_m": 6.5,
    "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": "Bay of Islands",
  "county": "Northland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}