{
 "ocl_version": "0.1.0",
 "name": "High Street",
 "slug": "high-street-16",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.90926106246752,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 298.0,
   "end_distance_m": 300.0,
   "start_elevation_m": 305.38765443877867,
   "end_elevation_m": 306.065839660028,
   "min_gradient_pct": -244.7825870354052,
   "suppressed_max_gradient_pct": 256.7264082011974,
   "suppressed_location_m": [
    88.0,
    90.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.176018828487486,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 297.0,
   "end_distance_m": 300.0,
   "start_elevation_m": 305.0705590951734,
   "end_elevation_m": 306.065839660028,
   "min_gradient_pct": -188.70103609530892,
   "suppressed_max_gradient_pct": 220.81789678559858,
   "suppressed_location_m": [
    87.0,
    90.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.617615358959483,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 297.0,
   "end_distance_m": 302.0,
   "start_elevation_m": 305.0705590951734,
   "end_elevation_m": 306.65143986312137,
   "min_gradient_pct": -131.24224948706342,
   "suppressed_max_gradient_pct": 149.68276414268075,
   "suppressed_location_m": [
    86.0,
    91.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.431497189307947,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 296.0,
   "end_distance_m": 306.0,
   "start_elevation_m": 304.8357073235944,
   "end_elevation_m": 307.5788570425252,
   "min_gradient_pct": -70.137203333137,
   "suppressed_max_gradient_pct": 79.59913849307611,
   "suppressed_location_m": [
    85.0,
    95.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.13316835846166,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 295.0,
   "end_distance_m": 315.0,
   "start_elevation_m": 304.6376225560615,
   "end_elevation_m": 309.26425622775383,
   "min_gradient_pct": -34.932272792095205,
   "suppressed_max_gradient_pct": 44.056472962419946,
   "suppressed_location_m": [
    85.0,
    105.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.35132538723451,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 262.0,
   "end_distance_m": 287.0,
   "start_elevation_m": 297.9446371194443,
   "end_elevation_m": 303.5324684662529,
   "min_gradient_pct": -27.68423792272847,
   "suppressed_max_gradient_pct": 37.325881558622314,
   "suppressed_location_m": [
    85.0,
    110.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.774702639426323,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 260.0,
   "end_distance_m": 310.0,
   "start_elevation_m": 297.53591473455197,
   "end_elevation_m": 308.4232660542651,
   "min_gradient_pct": -13.632575311218034,
   "suppressed_max_gradient_pct": 25.6254267918805,
   "suppressed_location_m": [
    85.0,
    135.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.71604991351319,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 229.0,
   "end_distance_m": 329.0,
   "start_elevation_m": 292.9522134997686,
   "end_elevation_m": 310.6682634132818,
   "min_gradient_pct": 1.5197839762400918,
   "suppressed_max_gradient_pct": 19.164319454337203,
   "suppressed_location_m": [
    84.0,
    184.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.427,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 93.0,
  "shape_class": "sustained"
 },
 "length_m": 574.9999999999873,
 "start_elevation_m": 278.02666070312046,
 "end_elevation_m": 321.66229269576843,
 "endpoint_gain_m": 43.63563199264797,
 "overall_gradient_pct": 7.588805563938947,
 "accumulated_ascent_m": 50.943393140138994,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.617615358959483,
   "start_distance_m": 297.0,
   "end_distance_m": 302.0,
   "midpoint_distance_m": 299.5,
   "start_elevation_m": 305.0705590951734,
   "end_elevation_m": 306.65143986312137,
   "start_xy": [
    609676.33834526,
    4458254.684166158
   ],
   "end_xy": [
    609681.3230038175,
    4458254.292785185
   ]
  },
  "max_10m": {
   "gradient_pct": 27.431497189307947,
   "start_distance_m": 296.0,
   "end_distance_m": 306.0,
   "midpoint_distance_m": 301.0,
   "start_elevation_m": 304.8357073235944,
   "end_elevation_m": 307.5788570425252,
   "start_xy": [
    609675.3414135484,
    4458254.762442352
   ],
   "end_xy": [
    609685.3107306635,
    4458253.979680408
   ]
  },
  "max_20m": {
   "gradient_pct": 23.13316835846166,
   "start_distance_m": 295.0,
   "end_distance_m": 315.0,
   "midpoint_distance_m": 305.0,
   "start_elevation_m": 304.6376225560615,
   "end_elevation_m": 309.26425622775383,
   "start_xy": [
    609674.344481837,
    4458254.840718547
   ],
   "end_xy": [
    609694.283116067,
    4458253.275194658
   ]
  },
  "max_25m": {
   "gradient_pct": 22.35132538723451,
   "start_distance_m": 262.0,
   "end_distance_m": 287.0,
   "midpoint_distance_m": 274.5,
   "start_elevation_m": 297.9446371194443,
   "end_elevation_m": 303.5324684662529,
   "start_xy": [
    609641.4457353577,
    4458257.423832963
   ],
   "end_xy": [
    609666.3690281451,
    4458255.466928102
   ]
  },
  "max_50m": {
   "gradient_pct": 21.774702639426323,
   "start_distance_m": 260.0,
   "end_distance_m": 310.0,
   "midpoint_distance_m": 285.0,
   "start_elevation_m": 297.53591473455197,
   "end_elevation_m": 308.4232660542651,
   "start_xy": [
    609639.4518719347,
    4458257.5803853525
   ],
   "end_xy": [
    609689.2984575094,
    4458253.66657563
   ]
  },
  "max_100m": {
   "gradient_pct": 17.71604991351319,
   "start_distance_m": 229.0,
   "end_distance_m": 329.0,
   "midpoint_distance_m": 279.0,
   "start_elevation_m": 292.9522134997686,
   "end_elevation_m": 310.6682634132818,
   "start_xy": [
    609618.3207026676,
    4458244.153360015
   ],
   "end_xy": [
    609708.2401600278,
    4458252.179327936
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -131.24224948706342,
   "start_distance_m": 66.0,
   "end_distance_m": 71.0,
   "midpoint_distance_m": 68.5,
   "start_elevation_m": 278.0110718752661,
   "end_elevation_m": 271.44895940091294,
   "start_xy": [
    609604.1979245135,
    4458084.771797692
   ],
   "end_xy": [
    609604.495869276,
    4458089.76291269
   ]
  },
  "min_10m": {
   "gradient_pct": -70.137203333137,
   "start_distance_m": 65.0,
   "end_distance_m": 75.0,
   "midpoint_distance_m": 70.0,
   "start_elevation_m": 278.1002828246295,
   "end_elevation_m": 271.0865624913158,
   "start_xy": [
    609604.1383355609,
    4458083.773574692
   ],
   "end_xy": [
    609604.734225086,
    4458093.755804688
   ]
  },
  "min_20m": {
   "gradient_pct": -34.932272792095205,
   "start_distance_m": 63.0,
   "end_distance_m": 83.0,
   "midpoint_distance_m": 73.0,
   "start_elevation_m": 278.083005979868,
   "end_elevation_m": 271.09655142144896,
   "start_xy": [
    609604.0191576559,
    4458081.777128694
   ],
   "end_xy": [
    609605.2109367062,
    4458101.741588684
   ]
  },
  "min_25m": {
   "gradient_pct": -27.68423792272847,
   "start_distance_m": 58.0,
   "end_distance_m": 83.0,
   "midpoint_distance_m": 70.5,
   "start_elevation_m": 278.0176109021311,
   "end_elevation_m": 271.09655142144896,
   "start_xy": [
    609603.7212128934,
    4458076.786013696
   ],
   "end_xy": [
    609605.2109367062,
    4458101.741588684
   ]
  },
  "min_50m": {
   "gradient_pct": -13.632575311218034,
   "start_distance_m": 32.0,
   "end_distance_m": 82.0,
   "midpoint_distance_m": 57.0,
   "start_elevation_m": 277.9100276512489,
   "end_elevation_m": 271.0937399956399,
   "start_xy": [
    609599.2848781018,
    4458051.561608351
   ],
   "end_xy": [
    609605.1513477536,
    4458100.7433656845
   ]
  },
  "min_100m": {
   "gradient_pct": 1.5197839762400918,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 278.02666070312046,
   "end_elevation_m": 279.54644467936055,
   "start_xy": [
    609580.32,
    4458027.313
   ],
   "end_xy": [
    609606.2239488988,
    4458118.711379675
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.90926106246752,
   "start_distance_m": 298.0,
   "end_distance_m": 300.0,
   "midpoint_distance_m": 299.0,
   "start_elevation_m": 305.38765443877867,
   "end_elevation_m": 306.065839660028,
   "start_xy": [
    609677.3352769715,
    4458254.605889964
   ],
   "end_xy": [
    609679.3291403945,
    4458254.449337575
   ]
  },
  "max_3m": {
   "gradient_pct": 33.176018828487486,
   "start_distance_m": 297.0,
   "end_distance_m": 300.0,
   "midpoint_distance_m": 298.5,
   "start_elevation_m": 305.0705590951734,
   "end_elevation_m": 306.065839660028,
   "start_xy": [
    609676.33834526,
    4458254.684166158
   ],
   "end_xy": [
    609679.3291403945,
    4458254.449337575
   ]
  }
 },
 "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": 0.057,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    62.0,
    94.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "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_x60y446_PA_WesternPA_2019_D20.tif",
   "data/cache/usa/pa-west/USGS_1M_17_x61y446_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T15:58:26+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": [
   "x60y446",
   "x61y446"
  ],
  "route_summit_trim_m": 187.7,
  "route_summit_trim_loss_m": 4.1,
  "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": "Sewickley",
  "county": "Pennsylvania"
 }
}