{
 "ocl_version": "0.1.0",
 "name": "High Street",
 "slug": "high-street-14",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.784300697079175,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 142.0,
   "end_distance_m": 144.0,
   "start_elevation_m": 241.65190825509637,
   "end_elevation_m": 242.12759426903796,
   "min_gradient_pct": 0.24391396368770302
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.440783844341695,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 142.0,
   "end_distance_m": 145.0,
   "start_elevation_m": 241.65190825509637,
   "end_elevation_m": 242.35513177042662,
   "min_gradient_pct": 0.4241813208542074
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.85310188446374,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 141.0,
   "end_distance_m": 146.0,
   "start_elevation_m": 241.4348562032826,
   "end_elevation_m": 242.5775112975058,
   "min_gradient_pct": 0.9317000329644998
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.41256746400154,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 141.0,
   "end_distance_m": 151.0,
   "start_elevation_m": 241.4348562032826,
   "end_elevation_m": 243.67611294968276,
   "min_gradient_pct": 2.91241847389216
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.8190310694782,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 132.0,
   "end_distance_m": 152.0,
   "start_elevation_m": 239.7104170598862,
   "end_elevation_m": 243.87422327378184,
   "min_gradient_pct": 3.5087357247692808
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.10830453907181,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 128.0,
   "end_distance_m": 153.0,
   "start_elevation_m": 239.02174996078082,
   "end_elevation_m": 244.04882609554878,
   "min_gradient_pct": 3.5677141448026077
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.09184214353752,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 106.0,
   "end_distance_m": 156.0,
   "start_elevation_m": 235.94323305372,
   "end_elevation_m": 244.48915412548877,
   "min_gradient_pct": 3.843126995153625
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.149206632477558,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 110.0,
   "end_distance_m": 210.0,
   "start_elevation_m": 236.39171578602435,
   "end_elevation_m": 251.5409224185019,
   "min_gradient_pct": 4.902927820709863
  }
 ],
 "shape": {
  "ascent_concentration": 0.42,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 67.0,
  "shape_class": "sustained"
 },
 "length_m": 220.25358821847988,
 "start_elevation_m": 230.37802611625676,
 "end_elevation_m": 252.11423911346,
 "endpoint_gain_m": 21.73621299720324,
 "overall_gradient_pct": 9.868721401097932,
 "accumulated_ascent_m": 21.73890138351487,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.85310188446374,
   "start_distance_m": 141.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 143.5,
   "start_elevation_m": 241.4348562032826,
   "end_elevation_m": 242.5775112975058,
   "start_xy": [
    599175.640489352,
    4463416.545297473
   ],
   "end_xy": [
    599178.3621662137,
    4463420.739635926
   ]
  },
  "max_10m": {
   "gradient_pct": 22.41256746400154,
   "start_distance_m": 141.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 146.0,
   "start_elevation_m": 241.4348562032826,
   "end_elevation_m": 243.67611294968276,
   "start_xy": [
    599175.640489352,
    4463416.545297473
   ],
   "end_xy": [
    599181.0838430754,
    4463424.93397438
   ]
  },
  "max_20m": {
   "gradient_pct": 20.8190310694782,
   "start_distance_m": 132.0,
   "end_distance_m": 152.0,
   "midpoint_distance_m": 142.0,
   "start_elevation_m": 239.7104170598862,
   "end_elevation_m": 243.87422327378184,
   "start_xy": [
    599170.7414710011,
    4463408.995488257
   ],
   "end_xy": [
    599181.6281784477,
    4463425.77284207
   ]
  },
  "max_25m": {
   "gradient_pct": 20.10830453907181,
   "start_distance_m": 128.0,
   "end_distance_m": 153.0,
   "midpoint_distance_m": 140.5,
   "start_elevation_m": 239.02174996078082,
   "end_elevation_m": 244.04882609554878,
   "start_xy": [
    599168.5641295117,
    4463405.640017495
   ],
   "end_xy": [
    599182.1725138201,
    4463426.6117097605
   ]
  },
  "max_50m": {
   "gradient_pct": 17.09184214353752,
   "start_distance_m": 106.0,
   "end_distance_m": 156.0,
   "midpoint_distance_m": 131.0,
   "start_elevation_m": 235.94323305372,
   "end_elevation_m": 244.48915412548877,
   "start_xy": [
    599156.6373592825,
    4463387.153534629
   ],
   "end_xy": [
    599183.8055199371,
    4463429.128312833
   ]
  },
  "max_100m": {
   "gradient_pct": 15.149206632477558,
   "start_distance_m": 110.0,
   "end_distance_m": 210.0,
   "midpoint_distance_m": 160.0,
   "start_elevation_m": 236.39171578602435,
   "end_elevation_m": 251.5409224185019,
   "start_xy": [
    599158.8003115734,
    4463390.518298721
   ],
   "end_xy": [
    599212.4173339754,
    4463474.924657526
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.9317000329644998,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 230.37802611625676,
   "end_elevation_m": 230.424611117905,
   "start_xy": [
    599098.549,
    4463298.495
   ],
   "end_xy": [
    599101.3491997037,
    4463302.637328044
   ]
  },
  "min_10m": {
   "gradient_pct": 2.91241847389216,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 230.37802611625676,
   "end_elevation_m": 230.66926796364598,
   "start_xy": [
    599098.549,
    4463298.495
   ],
   "end_xy": [
    599104.1493994073,
    4463306.779656087
   ]
  },
  "min_20m": {
   "gradient_pct": 3.5087357247692808,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 230.37802611625676,
   "end_elevation_m": 231.07977326121062,
   "start_xy": [
    599098.549,
    4463298.495
   ],
   "end_xy": [
    599109.7497988146,
    4463315.064312174
   ]
  },
  "min_25m": {
   "gradient_pct": 3.5677141448026077,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 230.37802611625676,
   "end_elevation_m": 231.26995465245741,
   "start_xy": [
    599098.549,
    4463298.495
   ],
   "end_xy": [
    599112.5499985183,
    4463319.206640217
   ]
  },
  "min_50m": {
   "gradient_pct": 3.843126995153625,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 230.37802611625676,
   "end_elevation_m": 232.29958961383358,
   "start_xy": [
    599098.549,
    4463298.495
   ],
   "end_xy": [
    599126.3552766679,
    4463340.04731984
   ]
  },
  "min_100m": {
   "gradient_pct": 4.902927820709863,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 230.37802611625676,
   "end_elevation_m": 235.28095393696663,
   "start_xy": [
    599098.549,
    4463298.495
   ],
   "end_xy": [
    599153.3929308461,
    4463382.106388493
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.784300697079175,
   "start_distance_m": 142.0,
   "end_distance_m": 144.0,
   "midpoint_distance_m": 143.0,
   "start_elevation_m": 241.65190825509637,
   "end_elevation_m": 242.12759426903796,
   "start_xy": [
    599176.1848247244,
    4463417.384165163
   ],
   "end_xy": [
    599177.2734954691,
    4463419.061900545
   ]
  },
  "max_3m": {
   "gradient_pct": 23.440783844341695,
   "start_distance_m": 142.0,
   "end_distance_m": 145.0,
   "midpoint_distance_m": 143.5,
   "start_elevation_m": 241.65190825509637,
   "end_elevation_m": 242.35513177042662,
   "start_xy": [
    599176.1848247244,
    4463417.384165163
   ],
   "end_xy": [
    599177.8178308414,
    4463419.900768235
   ]
  }
 },
 "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": {
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "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:26917",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa-west/USGS_1M_17_x59y447_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T15:28:31+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/pennsylvania-2026-09-07-batch-band1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "pa-run4-260907",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, PA_WesternPA_2019_D20 (collected 2020)",
  "elevation_tile_ids": [
   "x59y447"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_WesternPA_2019_D20: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Versailles",
  "county": "Pennsylvania"
 }
}