{
 "ocl_version": "0.1.0",
 "name": "Milton Street",
 "slug": "milton-street",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.316725422721674,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 82.0,
   "end_distance_m": 84.0,
   "start_elevation_m": 297.576064018239,
   "end_elevation_m": 298.0623985266934,
   "min_gradient_pct": 0.4615873708132767
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.945037512394645,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 81.0,
   "end_distance_m": 84.0,
   "start_elevation_m": 297.3440474013216,
   "end_elevation_m": 298.0623985266934,
   "min_gradient_pct": 0.7819489822130284
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.377353382614956,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 79.0,
   "end_distance_m": 84.0,
   "start_elevation_m": 296.89353085756267,
   "end_elevation_m": 298.0623985266934,
   "min_gradient_pct": 1.2589010613567098
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.85055990348212,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 79.0,
   "end_distance_m": 89.0,
   "start_elevation_m": 296.89353085756267,
   "end_elevation_m": 299.1785868479109,
   "min_gradient_pct": 1.9152955214769918
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.909813852298328,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 72.0,
   "end_distance_m": 92.0,
   "start_elevation_m": 295.4679091181463,
   "end_elevation_m": 299.84987188860595,
   "min_gradient_pct": 2.259932167567058
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.73872741374589,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 67.0,
   "end_distance_m": 92.0,
   "start_elevation_m": 294.4151900351695,
   "end_elevation_m": 299.84987188860595,
   "min_gradient_pct": 2.4164419684525456
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.311981348969084,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 46.0,
   "end_distance_m": 96.0,
   "start_elevation_m": 289.9555302861755,
   "end_elevation_m": 300.61152096066,
   "min_gradient_pct": 2.9874874291424476
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.998517868749218,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 20.0,
   "end_distance_m": 120.0,
   "start_elevation_m": 286.11481338033,
   "end_elevation_m": 304.11333124907924,
   "min_gradient_pct": 6.668945753641367
  }
 ],
 "shape": {
  "ascent_concentration": 0.395,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 141.0,
  "shape_class": "sustained"
 },
 "length_m": 278.5564947033214,
 "start_elevation_m": 284.6694184859624,
 "end_elevation_m": 320.1384479165737,
 "endpoint_gain_m": 35.46902943061127,
 "overall_gradient_pct": 12.733154711897066,
 "accumulated_ascent_m": 35.46902943061127,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.377353382614956,
   "start_distance_m": 79.0,
   "end_distance_m": 84.0,
   "midpoint_distance_m": 81.5,
   "start_elevation_m": 296.89353085756267,
   "end_elevation_m": 298.0623985266934,
   "start_xy": [
    600650.6697478372,
    4473917.581902938
   ],
   "end_xy": [
    600650.9801625604,
    4473922.572257905
   ]
  },
  "max_10m": {
   "gradient_pct": 22.85055990348212,
   "start_distance_m": 79.0,
   "end_distance_m": 89.0,
   "midpoint_distance_m": 84.0,
   "start_elevation_m": 296.89353085756267,
   "end_elevation_m": 299.1785868479109,
   "start_xy": [
    600650.6697478372,
    4473917.581902938
   ],
   "end_xy": [
    600651.2905772835,
    4473927.562612873
   ]
  },
  "max_20m": {
   "gradient_pct": 21.909813852298328,
   "start_distance_m": 72.0,
   "end_distance_m": 92.0,
   "midpoint_distance_m": 82.0,
   "start_elevation_m": 295.4679091181463,
   "end_elevation_m": 299.84987188860595,
   "start_xy": [
    600650.2326341119,
    4473910.5955645535
   ],
   "end_xy": [
    600651.4768261174,
    4473930.556825853
   ]
  },
  "max_25m": {
   "gradient_pct": 21.73872741374589,
   "start_distance_m": 67.0,
   "end_distance_m": 92.0,
   "midpoint_distance_m": 79.5,
   "start_elevation_m": 294.4151900351695,
   "end_elevation_m": 299.84987188860595,
   "start_xy": [
    600649.9182845207,
    4473905.605455904
   ],
   "end_xy": [
    600651.4768261174,
    4473930.556825853
   ]
  },
  "max_50m": {
   "gradient_pct": 21.311981348969084,
   "start_distance_m": 46.0,
   "end_distance_m": 96.0,
   "midpoint_distance_m": 71.0,
   "start_elevation_m": 289.9555302861755,
   "end_elevation_m": 300.61152096066,
   "start_xy": [
    600648.5980162382,
    4473884.646999576
   ],
   "end_xy": [
    600651.7251578958,
    4473934.549109827
   ]
  },
  "max_100m": {
   "gradient_pct": 17.998517868749218,
   "start_distance_m": 20.0,
   "end_distance_m": 120.0,
   "midpoint_distance_m": 70.0,
   "start_elevation_m": 286.11481338033,
   "end_elevation_m": 304.11333124907924,
   "start_xy": [
    600646.9633983644,
    4473858.698434598
   ],
   "end_xy": [
    600653.2652578065,
    4473958.499485957
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.2589010613567098,
   "start_distance_m": 225.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 227.5,
   "start_elevation_m": 312.0232476624666,
   "end_elevation_m": 312.0861927155344,
   "start_xy": [
    600660.4559368743,
    4474063.251538314
   ],
   "end_xy": [
    600660.7594183892,
    4474068.242319712
   ]
  },
  "min_10m": {
   "gradient_pct": 1.9152955214769918,
   "start_distance_m": 203.0,
   "end_distance_m": 213.0,
   "midpoint_distance_m": 208.0,
   "start_elevation_m": 311.44626997883154,
   "end_elevation_m": 311.63779953097924,
   "start_xy": [
    600659.1206182085,
    4474041.292100159
   ],
   "end_xy": [
    600659.7275812384,
    4474051.273662956
   ]
  },
  "min_20m": {
   "gradient_pct": 2.259932167567058,
   "start_distance_m": 199.0,
   "end_distance_m": 219.0,
   "midpoint_distance_m": 209.0,
   "start_elevation_m": 311.35755632149846,
   "end_elevation_m": 311.8095427550119,
   "start_xy": [
    600658.8778329967,
    4474037.29947504
   ],
   "end_xy": [
    600660.0917590563,
    4474057.262600635
   ]
  },
  "min_25m": {
   "gradient_pct": 2.4164419684525456,
   "start_distance_m": 203.0,
   "end_distance_m": 228.0,
   "midpoint_distance_m": 215.5,
   "start_elevation_m": 311.44626997883154,
   "end_elevation_m": 312.0503804709447,
   "start_xy": [
    600659.1206182085,
    4474041.292100159
   ],
   "end_xy": [
    600660.6380257832,
    4474066.246007153
   ]
  },
  "min_50m": {
   "gradient_pct": 2.9874874291424476,
   "start_distance_m": 180.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 205.0,
   "start_elevation_m": 310.5924490009632,
   "end_elevation_m": 312.0861927155344,
   "start_xy": [
    600657.5605552115,
    4474018.345494173
   ],
   "end_xy": [
    600660.7594183892,
    4474068.242319712
   ]
  },
  "min_100m": {
   "gradient_pct": 6.668945753641367,
   "start_distance_m": 132.0,
   "end_distance_m": 232.0,
   "midpoint_distance_m": 182.0,
   "start_elevation_m": 305.61756660927716,
   "end_elevation_m": 312.28651236291853,
   "start_xy": [
    600654.1105656332,
    4473970.46967621
   ],
   "end_xy": [
    600658.8972373285,
    4474068.508236887
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.316725422721674,
   "start_distance_m": 82.0,
   "end_distance_m": 84.0,
   "midpoint_distance_m": 83.0,
   "start_elevation_m": 297.576064018239,
   "end_elevation_m": 298.0623985266934,
   "start_xy": [
    600650.8559966711,
    4473920.576115918
   ],
   "end_xy": [
    600650.9801625604,
    4473922.572257905
   ]
  },
  "max_3m": {
   "gradient_pct": 23.945037512394645,
   "start_distance_m": 81.0,
   "end_distance_m": 84.0,
   "midpoint_distance_m": 82.5,
   "start_elevation_m": 297.3440474013216,
   "end_elevation_m": 298.0623985266934,
   "start_xy": [
    600650.7939137266,
    4473919.578044925
   ],
   "end_xy": [
    600650.9801625604,
    4473922.572257905
   ]
  }
 },
 "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_start_earlier",
   "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_x60y448_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T11:28:04+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": [
   "x60y448"
  ],
  "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": "Turtle Creek",
  "county": "Pennsylvania"
 }
}