{
 "ocl_version": "0.1.0",
 "name": "19th Street",
 "slug": "19th-street-2-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.293278600567646,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 340.0,
   "end_distance_m": 342.0,
   "start_elevation_m": 367.8643674087119,
   "end_elevation_m": 368.3302329807233,
   "min_gradient_pct": -8.348861951515119
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.834260355625702,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 333.0,
   "end_distance_m": 336.0,
   "start_elevation_m": 366.34317128523537,
   "end_elevation_m": 367.02819909590414,
   "min_gradient_pct": -8.296473050105154
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.446431123762522,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 340.0,
   "end_distance_m": 345.0,
   "start_elevation_m": 367.8643674087119,
   "end_elevation_m": 368.98668896490005,
   "min_gradient_pct": -8.256165867812797
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.04867075716777,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 333.0,
   "end_distance_m": 343.0,
   "start_elevation_m": 366.34317128523537,
   "end_elevation_m": 368.54803836095215,
   "min_gradient_pct": -7.889275376548426
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.366965516769483,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 325.0,
   "end_distance_m": 345.0,
   "start_elevation_m": 364.71329586154616,
   "end_elevation_m": 368.98668896490005,
   "min_gradient_pct": -7.498712241337557
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.06845214642226,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 324.0,
   "end_distance_m": 349.0,
   "start_elevation_m": 364.4997084474937,
   "end_elevation_m": 369.76682148409924,
   "min_gradient_pct": -7.2660501693885635
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.22064194435825,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 318.0,
   "end_distance_m": 368.0,
   "start_elevation_m": 363.37708868944384,
   "end_elevation_m": 372.98740966162296,
   "min_gradient_pct": -4.593411526172872
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.396818991817952,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 315.0,
   "end_distance_m": 415.0,
   "start_elevation_m": 362.96979699586666,
   "end_elevation_m": 378.3666159876846,
   "min_gradient_pct": 0.9498806092126983
  }
 ],
 "shape": {
  "ascent_concentration": 0.486,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 92.0,
  "shape_class": "stepped"
 },
 "length_m": 622.7525376717558,
 "start_elevation_m": 349.2713065220323,
 "end_elevation_m": 385.7588032073936,
 "endpoint_gain_m": 36.48749668536129,
 "overall_gradient_pct": 5.859068326204612,
 "accumulated_ascent_m": 38.916536274070324,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.446431123762522,
   "start_distance_m": 340.0,
   "end_distance_m": 345.0,
   "midpoint_distance_m": 342.5,
   "start_elevation_m": 367.8643674087119,
   "end_elevation_m": 368.98668896490005,
   "start_xy": [
    720409.8424041,
    4487021.84807872
   ],
   "end_xy": [
    720413.6497414272,
    4487018.607063065
   ]
  },
  "max_10m": {
   "gradient_pct": 22.04867075716777,
   "start_distance_m": 333.0,
   "end_distance_m": 343.0,
   "midpoint_distance_m": 338.0,
   "start_elevation_m": 366.34317128523537,
   "end_elevation_m": 368.54803836095215,
   "start_xy": [
    720404.5121318419,
    4487026.385500637
   ],
   "end_xy": [
    720412.1268064963,
    4487019.903469327
   ]
  },
  "max_20m": {
   "gradient_pct": 21.366965516769483,
   "start_distance_m": 325.0,
   "end_distance_m": 345.0,
   "midpoint_distance_m": 335.0,
   "start_elevation_m": 364.71329586154616,
   "end_elevation_m": 368.98668896490005,
   "start_xy": [
    720398.4203921183,
    4487031.571125685
   ],
   "end_xy": [
    720413.6497414272,
    4487018.607063065
   ]
  },
  "max_25m": {
   "gradient_pct": 21.06845214642226,
   "start_distance_m": 324.0,
   "end_distance_m": 349.0,
   "midpoint_distance_m": 336.5,
   "start_elevation_m": 364.4997084474937,
   "end_elevation_m": 369.76682148409924,
   "start_xy": [
    720397.6589246528,
    4487032.219328817
   ],
   "end_xy": [
    720416.6956112889,
    4487016.014250541
   ]
  },
  "max_50m": {
   "gradient_pct": 19.22064194435825,
   "start_distance_m": 318.0,
   "end_distance_m": 368.0,
   "midpoint_distance_m": 343.0,
   "start_elevation_m": 363.37708868944384,
   "end_elevation_m": 372.98740966162296,
   "start_xy": [
    720393.0901198603,
    4487036.108547603
   ],
   "end_xy": [
    720431.1645396304,
    4487003.69962058
   ]
  },
  "max_100m": {
   "gradient_pct": 15.396818991817952,
   "start_distance_m": 315.0,
   "end_distance_m": 415.0,
   "midpoint_distance_m": 365.0,
   "start_elevation_m": 362.96979699586666,
   "end_elevation_m": 378.3666159876846,
   "start_xy": [
    720390.8058133608,
    4487038.053269637
   ],
   "end_xy": [
    720466.998042124,
    4486973.286634751
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.256165867812797,
   "start_distance_m": 474.0,
   "end_distance_m": 479.0,
   "midpoint_distance_m": 476.5,
   "start_elevation_m": 379.6783399972034,
   "end_elevation_m": 379.26553170381277,
   "start_xy": [
    720512.115205463,
    4486935.2676714305
   ],
   "end_xy": [
    720515.9386579875,
    4486932.045682791
   ]
  },
  "min_10m": {
   "gradient_pct": -7.889275376548426,
   "start_distance_m": 473.0,
   "end_distance_m": 483.0,
   "midpoint_distance_m": 478.0,
   "start_elevation_m": 379.75311129684883,
   "end_elevation_m": 378.964183759194,
   "start_xy": [
    720511.3505149581,
    4486935.912069159
   ],
   "end_xy": [
    720518.9974200072,
    4486929.46809188
   ]
  },
  "min_20m": {
   "gradient_pct": -7.498712241337557,
   "start_distance_m": 466.0,
   "end_distance_m": 486.0,
   "midpoint_distance_m": 476.0,
   "start_elevation_m": 380.25217320282866,
   "end_elevation_m": 378.75243075456115,
   "start_xy": [
    720505.9976814238,
    4486940.422853254
   ],
   "end_xy": [
    720521.2914915219,
    4486927.534898696
   ]
  },
  "min_25m": {
   "gradient_pct": -7.2660501693885635,
   "start_distance_m": 464.0,
   "end_distance_m": 489.0,
   "midpoint_distance_m": 476.5,
   "start_elevation_m": 380.3747768676767,
   "end_elevation_m": 378.55826432532956,
   "start_xy": [
    720504.4683004139,
    4486941.711648709
   ],
   "end_xy": [
    720523.5855630366,
    4486925.601705512
   ]
  },
  "min_50m": {
   "gradient_pct": -4.593411526172872,
   "start_distance_m": 448.0,
   "end_distance_m": 498.0,
   "midpoint_distance_m": 473.0,
   "start_elevation_m": 380.72104430798026,
   "end_elevation_m": 378.4243385448938,
   "start_xy": [
    720492.2332225076,
    4486952.021976959
   ],
   "end_xy": [
    720528.051197603,
    4486919.434647499
   ]
  },
  "min_100m": {
   "gradient_pct": 0.9498806092126983,
   "start_distance_m": 402.0,
   "end_distance_m": 502.0,
   "midpoint_distance_m": 452.0,
   "start_elevation_m": 377.63084339663715,
   "end_elevation_m": 378.58072400584985,
   "start_xy": [
    720457.0574457123,
    4486981.664253222
   ],
   "end_xy": [
    720525.8956920283,
    4486916.065108106
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.293278600567646,
   "start_distance_m": 340.0,
   "end_distance_m": 342.0,
   "midpoint_distance_m": 341.0,
   "start_elevation_m": 367.8643674087119,
   "end_elevation_m": 368.3302329807233,
   "start_xy": [
    720409.8424041,
    4487021.84807872
   ],
   "end_xy": [
    720411.3653390309,
    4487020.551672458
   ]
  },
  "max_3m": {
   "gradient_pct": 22.834260355625702,
   "start_distance_m": 333.0,
   "end_distance_m": 336.0,
   "midpoint_distance_m": 334.5,
   "start_elevation_m": 366.34317128523537,
   "end_elevation_m": 367.02819909590414,
   "start_xy": [
    720404.5121318419,
    4487026.385500637
   ],
   "end_xy": [
    720406.7965342382,
    4487024.440891244
   ]
  }
 },
 "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": []
 },
 "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_x72y449_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-07T11:41:47+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-band2.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_Northcentral_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x72y449"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_Northcentral_2019_B19: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Altoona",
  "county": "Pennsylvania"
 }
}