{
 "ocl_version": "0.1.0",
 "name": "Summit Road",
 "slug": "summit-road-3-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.68765173124288,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 0.0,
   "end_distance_m": 2.0,
   "start_elevation_m": 44.43413959322558,
   "end_elevation_m": 45.00789262785044,
   "min_gradient_pct": -9.791792969070912,
   "suppressed_max_gradient_pct": 47.33118835863266,
   "suppressed_location_m": [
    170.0,
    172.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.730893823692554,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 247.0,
   "end_distance_m": 250.0,
   "start_elevation_m": 75.96499968040683,
   "end_elevation_m": 76.61692649511761,
   "min_gradient_pct": -9.233177453681188,
   "suppressed_max_gradient_pct": 46.02958647002661,
   "suppressed_location_m": [
    170.0,
    173.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.646912689016972,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1665.0,
   "end_distance_m": 1670.0,
   "start_elevation_m": 260.4655870515529,
   "end_elevation_m": 261.49793268600376,
   "min_gradient_pct": -8.37850313085255,
   "suppressed_max_gradient_pct": 40.50230877751176,
   "suppressed_location_m": [
    169.0,
    174.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.25931020631333,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1659.0,
   "end_distance_m": 1669.0,
   "start_elevation_m": 259.2675957519749,
   "end_elevation_m": 261.29352677260624,
   "min_gradient_pct": -7.365936496796621,
   "suppressed_max_gradient_pct": 26.43726676745061,
   "suppressed_location_m": [
    168.0,
    178.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.04046513594062,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1649.0,
   "end_distance_m": 1669.0,
   "start_elevation_m": 257.2854337454181,
   "end_elevation_m": 261.29352677260624,
   "min_gradient_pct": -6.661235743240468
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 19.931480510923848,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1648.0,
   "end_distance_m": 1673.0,
   "start_elevation_m": 257.08117767812155,
   "end_elevation_m": 262.0640478058525,
   "min_gradient_pct": -6.286667670771294
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.31517372549081,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1648.0,
   "end_distance_m": 1698.0,
   "start_elevation_m": 257.08117767812155,
   "end_elevation_m": 266.73876454086695,
   "min_gradient_pct": -4.960430226139579
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.56552825295347,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1595.0,
   "end_distance_m": 1695.0,
   "start_elevation_m": 247.61714828889592,
   "end_elevation_m": 266.1826765418494,
   "min_gradient_pct": -3.342335565047563
  }
 ],
 "shape": {
  "ascent_concentration": 0.423,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 500.0,
  "shape_class": "sustained"
 },
 "length_m": 7607.830006000249,
 "start_elevation_m": 44.43413959322558,
 "end_elevation_m": 618.2998860255856,
 "endpoint_gain_m": 573.86574643236,
 "overall_gradient_pct": 7.543093707137982,
 "accumulated_ascent_m": 594.3020192417353,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.646912689016972,
   "start_distance_m": 1665.0,
   "end_distance_m": 1670.0,
   "midpoint_distance_m": 1667.5,
   "start_elevation_m": 260.4655870515529,
   "end_elevation_m": 261.49793268600376,
   "start_xy": [
    1603136.887829261,
    5154440.782525321
   ],
   "end_xy": [
    1603131.8950157806,
    5154440.514544817
   ]
  },
  "max_10m": {
   "gradient_pct": 20.25931020631333,
   "start_distance_m": 1659.0,
   "end_distance_m": 1669.0,
   "midpoint_distance_m": 1664.0,
   "start_elevation_m": 259.2675957519749,
   "end_elevation_m": 261.29352677260624,
   "start_xy": [
    1603142.8797382803,
    5154441.058604344
   ],
   "end_xy": [
    1603132.8935784767,
    5154440.568140917
   ]
  },
  "max_20m": {
   "gradient_pct": 20.04046513594062,
   "start_distance_m": 1649.0,
   "end_distance_m": 1669.0,
   "midpoint_distance_m": 1659.0,
   "start_elevation_m": 257.2854337454181,
   "end_elevation_m": 261.29352677260624,
   "start_xy": [
    1603152.8751784402,
    5154440.75665069
   ],
   "end_xy": [
    1603132.8935784767,
    5154440.568140917
   ]
  },
  "max_25m": {
   "gradient_pct": 19.931480510923848,
   "start_distance_m": 1648.0,
   "end_distance_m": 1673.0,
   "midpoint_distance_m": 1660.5,
   "start_elevation_m": 257.08117767812155,
   "end_elevation_m": 262.0640478058525,
   "start_xy": [
    1603153.874722456,
    5154440.726455324
   ],
   "end_xy": [
    1603128.8993276923,
    5154440.353756513
   ]
  },
  "max_50m": {
   "gradient_pct": 19.31517372549081,
   "start_distance_m": 1648.0,
   "end_distance_m": 1698.0,
   "midpoint_distance_m": 1673.0,
   "start_elevation_m": 257.08117767812155,
   "end_elevation_m": 266.73876454086695,
   "start_xy": [
    1603153.874722456,
    5154440.726455324
   ],
   "end_xy": [
    1603104.184643074,
    5154436.770860535
   ]
  },
  "max_100m": {
   "gradient_pct": 18.56552825295347,
   "start_distance_m": 1595.0,
   "end_distance_m": 1695.0,
   "midpoint_distance_m": 1645.0,
   "start_elevation_m": 247.61714828889592,
   "end_elevation_m": 266.1826765418494,
   "start_xy": [
    1603206.1190705758,
    5154432.353240994
   ],
   "end_xy": [
    1603107.1262818032,
    5154437.354293932
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.37850313085255,
   "start_distance_m": 7561.0,
   "end_distance_m": 7566.0,
   "midpoint_distance_m": 7563.5,
   "start_elevation_m": 620.5970373464554,
   "end_elevation_m": 620.1781121899128,
   "start_xy": [
    1601755.2037287136,
    5151256.886554908
   ],
   "end_xy": [
    1601752.9944400191,
    5151252.4011292355
   ]
  },
  "min_10m": {
   "gradient_pct": -7.365936496796621,
   "start_distance_m": 7558.0,
   "end_distance_m": 7568.0,
   "midpoint_distance_m": 7563.0,
   "start_elevation_m": 620.7871178721962,
   "end_elevation_m": 620.0505242225165,
   "start_xy": [
    1601755.3620435223,
    5151259.80400255
   ],
   "end_xy": [
    1601752.1107245414,
    5151250.606958967
   ]
  },
  "min_20m": {
   "gradient_pct": -6.661235743240468,
   "start_distance_m": 7550.0,
   "end_distance_m": 7570.0,
   "midpoint_distance_m": 7560.0,
   "start_elevation_m": 621.2638211180713,
   "end_elevation_m": 619.9315739694232,
   "start_xy": [
    1601754.763789828,
    5151267.781601971
   ],
   "end_xy": [
    1601751.2270090636,
    5151248.812788698
   ]
  },
  "min_25m": {
   "gradient_pct": -6.286667670771294,
   "start_distance_m": 7545.0,
   "end_distance_m": 7570.0,
   "midpoint_distance_m": 7557.5,
   "start_elevation_m": 621.503240887116,
   "end_elevation_m": 619.9315739694232,
   "start_xy": [
    1601754.389881269,
    5151272.767601609
   ],
   "end_xy": [
    1601751.2270090636,
    5151248.812788698
   ]
  },
  "min_50m": {
   "gradient_pct": -4.960430226139579,
   "start_distance_m": 7557.0,
   "end_distance_m": 7607.0,
   "midpoint_distance_m": 7582.0,
   "start_elevation_m": 620.8430012214737,
   "end_elevation_m": 618.362786108404,
   "start_xy": [
    1601755.2872618104,
    5151260.801202478
   ],
   "end_xy": [
    1601728.1720399521,
    5151220.407759896
   ]
  },
  "min_100m": {
   "gradient_pct": -3.342335565047563,
   "start_distance_m": 3862.0,
   "end_distance_m": 3962.0,
   "midpoint_distance_m": 3912.0,
   "start_elevation_m": 468.7393454881044,
   "end_elevation_m": 465.3970099230568,
   "start_xy": [
    1601654.6415550222,
    5153643.491767717
   ],
   "end_xy": [
    1601582.9946280494,
    5153578.005607258
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.68765173124288,
   "start_distance_m": 0.0,
   "end_distance_m": 2.0,
   "midpoint_distance_m": 1.0,
   "start_elevation_m": 44.43413959322558,
   "end_elevation_m": 45.00789262785044,
   "start_xy": [
    1604637.718,
    5154532.485
   ],
   "end_xy": [
    1604636.0787494937,
    5154533.63080006
   ]
  },
  "max_3m": {
   "gradient_pct": 21.730893823692554,
   "start_distance_m": 247.0,
   "end_distance_m": 250.0,
   "midpoint_distance_m": 248.5,
   "start_elevation_m": 75.96499968040683,
   "end_elevation_m": 76.61692649511761,
   "start_xy": [
    1604474.0134115617,
    5154708.469090075
   ],
   "end_xy": [
    1604471.280467111,
    5154709.706431834
   ]
  }
 },
 "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": 0.001,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 5.0,
     "start_m": 169.0,
     "end_m": 174.0,
     "raw_pct": 40.5,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.143,
   "obstruction_max_height_m": 33.5,
   "flagged_windows_m": [
    3,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    167.0,
    176.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "descends_at_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-s3",
   "road_pbf": "block-batch-nz-s3.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": "sha256:65f98740b9968e3e"
  },
  "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/BX25.tiff",
   "data/cache/nz/BY25.tiff"
  ],
  "calculated_at": "2026-09-28T05:25:59+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-nz-s3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "nz-s3",
  "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": [
   "BX25",
   "BY25"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked",
  "carriageway": {
   "stations": 311,
   "stations_resolved": 311,
   "width_median_m": 5.5,
   "width_p10_m": 4.5,
   "width_min_m": 1.25,
   "width_max_m": 12.0,
   "bounded_share": 0.141,
   "unbounded_share": 0.859,
   "confidence_median": 0.0,
   "width_median_bounded_m": 6.0,
   "window_m": [
    1648.0,
    1673.0
   ],
   "width_at_max25_m": 5.25,
   "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": 311,
    "stations_resolved": 311,
    "width_median_m": 6.25,
    "width_p10_m": 1.25,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.83,
    "unbounded_share": 0.17,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.25,
    "window_m": [
     1648.0,
     1673.0
    ],
    "width_at_max25_m": 2.0,
    "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": "Banks Peninsula Community",
  "county": "Canterbury",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}