{
 "ocl_version": "0.1.0",
 "name": "Coronet Lane",
 "slug": "coronet-lane",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.644244321013417,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 140.0,
   "end_distance_m": 142.0,
   "start_elevation_m": 106.29760299004106,
   "end_elevation_m": 106.73048787646132,
   "min_gradient_pct": 2.3119908256369115
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 20.990775527007106,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 139.0,
   "end_distance_m": 142.0,
   "start_elevation_m": 106.10076461065111,
   "end_elevation_m": 106.73048787646132,
   "min_gradient_pct": 2.8909129511774267
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.278574959330058,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 161.0,
   "end_distance_m": 166.0,
   "start_elevation_m": 110.50912724849019,
   "end_elevation_m": 111.52305599645669,
   "min_gradient_pct": 4.061176284475039
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.23145813799985,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 145.0,
   "end_distance_m": 155.0,
   "start_elevation_m": 107.28903159243796,
   "end_elevation_m": 109.31217740623795,
   "min_gradient_pct": 6.330815773993521
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.06138924675888,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 148.0,
   "end_distance_m": 168.0,
   "start_elevation_m": 107.90027416680559,
   "end_elevation_m": 111.91255201615736,
   "min_gradient_pct": 6.673049582270778
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.07251859182776,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 145.0,
   "end_distance_m": 170.0,
   "start_elevation_m": 107.28903159243796,
   "end_elevation_m": 112.3071612403949,
   "min_gradient_pct": 7.062631099850705
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.89805326005839,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 127.0,
   "end_distance_m": 177.0,
   "start_elevation_m": 103.74348919476837,
   "end_elevation_m": 113.69251582479757,
   "min_gradient_pct": 10.015340580425686
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.502591114522872,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 86.0,
   "end_distance_m": 186.0,
   "start_elevation_m": 95.87338092605098,
   "end_elevation_m": 115.37597204057386,
   "min_gradient_pct": 14.204546765179785
  }
 ],
 "shape": {
  "ascent_concentration": 0.301,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 224.0,
  "shape_class": "sustained"
 },
 "length_m": 249.92838612590742,
 "start_elevation_m": 84.32493575288349,
 "end_elevation_m": 125.14068816539618,
 "endpoint_gain_m": 40.815752412512694,
 "overall_gradient_pct": 16.33097906371899,
 "accumulated_ascent_m": 40.815752412512694,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.278574959330058,
   "start_distance_m": 161.0,
   "end_distance_m": 166.0,
   "midpoint_distance_m": 163.5,
   "start_elevation_m": 110.50912724849019,
   "end_elevation_m": 111.52305599645669,
   "start_xy": [
    1773197.202481922,
    5906402.776591059
   ],
   "end_xy": [
    1773201.5419319323,
    5906400.292808941
   ]
  },
  "max_10m": {
   "gradient_pct": 20.23145813799985,
   "start_distance_m": 145.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 150.0,
   "start_elevation_m": 107.28903159243796,
   "end_elevation_m": 109.31217740623795,
   "start_xy": [
    1773182.5144104075,
    5906408.94257923
   ],
   "end_xy": [
    1773191.9885575566,
    5906405.742495513
   ]
  },
  "max_20m": {
   "gradient_pct": 20.06138924675888,
   "start_distance_m": 148.0,
   "end_distance_m": 168.0,
   "midpoint_distance_m": 158.0,
   "start_elevation_m": 107.90027416680559,
   "end_elevation_m": 111.91255201615736,
   "start_xy": [
    1773185.3566545523,
    5906407.982554115
   ],
   "end_xy": [
    1773202.9717393566,
    5906398.897578639
   ]
  },
  "max_25m": {
   "gradient_pct": 20.07251859182776,
   "start_distance_m": 145.0,
   "end_distance_m": 170.0,
   "midpoint_distance_m": 157.5,
   "start_elevation_m": 107.28903159243796,
   "end_elevation_m": 112.3071612403949,
   "start_xy": [
    1773182.5144104075,
    5906408.94257923
   ],
   "end_xy": [
    1773204.3907678223,
    5906397.488196429
   ]
  },
  "max_50m": {
   "gradient_pct": 19.89805326005839,
   "start_distance_m": 127.0,
   "end_distance_m": 177.0,
   "midpoint_distance_m": 152.0,
   "start_elevation_m": 103.74348919476837,
   "end_elevation_m": 113.69251582479757,
   "start_xy": [
    1773165.151981143,
    5906413.668542333
   ],
   "end_xy": [
    1773209.3573674513,
    5906392.555358694
   ]
  },
  "max_100m": {
   "gradient_pct": 19.502591114522872,
   "start_distance_m": 86.0,
   "end_distance_m": 186.0,
   "midpoint_distance_m": 136.0,
   "start_elevation_m": 95.87338092605098,
   "end_elevation_m": 115.37597204057386,
   "start_xy": [
    1773125.7094065654,
    5906424.749081421
   ],
   "end_xy": [
    1773214.9278664498,
    5906385.567514079
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 4.061176284475039,
   "start_distance_m": 244.0,
   "end_distance_m": 249.0,
   "midpoint_distance_m": 246.5,
   "start_elevation_m": 124.9309562370625,
   "end_elevation_m": 125.13401505128626,
   "start_xy": [
    1773239.073766792,
    5906332.970069755
   ],
   "end_xy": [
    1773240.9992721272,
    5906328.355698061
   ]
  },
  "min_10m": {
   "gradient_pct": 6.330815773993521,
   "start_distance_m": 6.0,
   "end_distance_m": 16.0,
   "midpoint_distance_m": 11.0,
   "start_elevation_m": 84.72388437533381,
   "end_elevation_m": 85.35696595273316,
   "start_xy": [
    1773056.8031141288,
    5906463.5891848495
   ],
   "end_xy": [
    1773063.9383043433,
    5906456.582826266
   ]
  },
  "min_20m": {
   "gradient_pct": 6.673049582270778,
   "start_distance_m": 1.0,
   "end_distance_m": 21.0,
   "midpoint_distance_m": 11.0,
   "start_elevation_m": 84.39671753815533,
   "end_elevation_m": 85.73132745460948,
   "start_xy": [
    1773053.2355190215,
    5906467.092364141
   ],
   "end_xy": [
    1773067.5058994505,
    5906453.079646974
   ]
  },
  "min_25m": {
   "gradient_pct": 7.062631099850705,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 84.32493575288349,
   "end_elevation_m": 86.09059352784617,
   "start_xy": [
    1773052.522,
    5906467.793
   ],
   "end_xy": [
    1773070.6809948024,
    5906450.710739623
   ]
  },
  "min_50m": {
   "gradient_pct": 10.015340580425686,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 84.32493575288349,
   "end_elevation_m": 89.33260604309633,
   "start_xy": [
    1773052.522,
    5906467.793
   ],
   "end_xy": [
    1773092.6416734871,
    5906438.76383242
   ]
  },
  "min_100m": {
   "gradient_pct": 14.204546765179785,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 84.32493575288349,
   "end_elevation_m": 98.52948251806328,
   "start_xy": [
    1773052.522,
    5906467.793
   ],
   "end_xy": [
    1773139.0242715166,
    5906420.476096202
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.644244321013417,
   "start_distance_m": 140.0,
   "end_distance_m": 142.0,
   "midpoint_distance_m": 141.0,
   "start_elevation_m": 106.29760299004106,
   "end_elevation_m": 106.73048787646132,
   "start_xy": [
    1773177.7319894817,
    5906410.390831212
   ],
   "end_xy": [
    1773179.66737538,
    5906409.886567961
   ]
  },
  "max_3m": {
   "gradient_pct": 20.990775527007106,
   "start_distance_m": 139.0,
   "end_distance_m": 142.0,
   "midpoint_distance_m": 140.5,
   "start_elevation_m": 106.10076461065111,
   "end_elevation_m": 106.73048787646132,
   "start_xy": [
    1773176.7642965326,
    5906410.642962836
   ],
   "end_xy": [
    1773179.66737538,
    5906409.886567961
   ]
  }
 },
 "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": 0.0,
   "obstruction_max_height_m": 0.25,
   "flagged_windows_m": []
  },
  "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-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/BB32.tiff"
  ],
  "calculated_at": "2026-09-28T05:34:51+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": [
   "BB32"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 15,
   "stations_resolved": 15,
   "width_median_m": 6.0,
   "width_p10_m": 5.75,
   "width_min_m": 5.75,
   "width_max_m": 12.0,
   "bounded_share": 0.0,
   "unbounded_share": 1.0,
   "confidence_median": 0.0,
   "window_m": [
    145.0,
    170.0
   ],
   "width_at_max25_m": 6.0,
   "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": 15,
    "stations_resolved": 15,
    "width_median_m": 10.5,
    "width_p10_m": 7.35,
    "width_min_m": 2.75,
    "width_max_m": 12.0,
    "bounded_share": 0.467,
    "unbounded_share": 0.533,
    "confidence_median": 0.0,
    "width_median_bounded_m": 8.5,
    "window_m": [
     145.0,
     170.0
    ],
    "width_at_max25_m": 10.62,
    "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": "Howick",
  "county": "Auckland",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}