{
 "ocl_version": "0.1.0",
 "name": "Ladoga Street",
 "slug": "ladoga-street-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.81380831456306,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 228.0,
   "end_distance_m": 230.0,
   "start_elevation_m": 311.95394475728745,
   "end_elevation_m": 312.5502209235787,
   "min_gradient_pct": -1.1211686356375594
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.196757497714998,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 227.0,
   "end_distance_m": 230.0,
   "start_elevation_m": 311.67431819864726,
   "end_elevation_m": 312.5502209235787,
   "min_gradient_pct": -0.7772133711190085
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.967208931237337,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 225.0,
   "end_distance_m": 230.0,
   "start_elevation_m": 311.15186047701684,
   "end_elevation_m": 312.5502209235787,
   "min_gradient_pct": -0.02297367343658152
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.5900285583391,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 221.0,
   "end_distance_m": 231.0,
   "start_elevation_m": 310.2093229253235,
   "end_elevation_m": 312.7683257811574,
   "min_gradient_pct": 1.0582859336221873
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.990444130316007,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 213.0,
   "end_distance_m": 233.0,
   "start_elevation_m": 308.71272725526416,
   "end_elevation_m": 313.11081608132736,
   "min_gradient_pct": 3.683218106609445
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.36341232993891,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 208.0,
   "end_distance_m": 233.0,
   "start_elevation_m": 308.01996299884263,
   "end_elevation_m": 313.11081608132736,
   "min_gradient_pct": 4.173914040301497
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 15.659205043544489,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 184.0,
   "end_distance_m": 234.0,
   "start_elevation_m": 305.4116109224303,
   "end_elevation_m": 313.2412134442026,
   "min_gradient_pct": 5.471306720751727
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.355202048245928,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 134.0,
   "end_distance_m": 234.0,
   "start_elevation_m": 299.88601139595664,
   "end_elevation_m": 313.2412134442026,
   "min_gradient_pct": 7.804229719374121
  }
 ],
 "shape": {
  "ascent_concentration": 0.357,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 44.0,
  "shape_class": "sustained"
 },
 "length_m": 241.84585516733452,
 "start_elevation_m": 288.3200856301255,
 "end_elevation_m": 313.5507826064311,
 "endpoint_gain_m": 25.23069697630558,
 "overall_gradient_pct": 10.432552982497185,
 "accumulated_ascent_m": 25.25401337743915,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.967208931237337,
   "start_distance_m": 225.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 227.5,
   "start_elevation_m": 311.15186047701684,
   "end_elevation_m": 312.5502209235787,
   "start_xy": [
    578951.9873097523,
    4478384.285567557
   ],
   "end_xy": [
    578950.2036930429,
    4478379.614517201
   ]
  },
  "max_10m": {
   "gradient_pct": 25.5900285583391,
   "start_distance_m": 221.0,
   "end_distance_m": 231.0,
   "midpoint_distance_m": 226.0,
   "start_elevation_m": 310.2093229253235,
   "end_elevation_m": 312.7683257811574,
   "start_xy": [
    578953.4142031198,
    4478388.022407843
   ],
   "end_xy": [
    578949.8469697009,
    4478378.680307129
   ]
  },
  "max_20m": {
   "gradient_pct": 21.990444130316007,
   "start_distance_m": 213.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 223.0,
   "start_elevation_m": 308.71272725526416,
   "end_elevation_m": 313.11081608132736,
   "start_xy": [
    578956.2679898549,
    4478395.4960884135
   ],
   "end_xy": [
    578949.1335230172,
    4478376.811886987
   ]
  },
  "max_25m": {
   "gradient_pct": 20.36341232993891,
   "start_distance_m": 208.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 220.5,
   "start_elevation_m": 308.01996299884263,
   "end_elevation_m": 313.11081608132736,
   "start_xy": [
    578958.0516065643,
    4478400.16713877
   ],
   "end_xy": [
    578949.1335230172,
    4478376.811886987
   ]
  },
  "max_50m": {
   "gradient_pct": 15.659205043544489,
   "start_distance_m": 184.0,
   "end_distance_m": 234.0,
   "midpoint_distance_m": 209.0,
   "start_elevation_m": 305.4116109224303,
   "end_elevation_m": 313.2412134442026,
   "start_xy": [
    578969.032131561,
    4478421.458135643
   ],
   "end_xy": [
    578948.7767996753,
    4478375.877676916
   ]
  },
  "max_100m": {
   "gradient_pct": 13.355202048245928,
   "start_distance_m": 134.0,
   "end_distance_m": 234.0,
   "midpoint_distance_m": 184.0,
   "start_elevation_m": 299.88601139595664,
   "end_elevation_m": 313.2412134442026,
   "start_xy": [
    578991.4340010775,
    4478466.117229184
   ],
   "end_xy": [
    578948.7767996753,
    4478375.877676916
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.02297367343658152,
   "start_distance_m": 82.0,
   "end_distance_m": 87.0,
   "midpoint_distance_m": 84.5,
   "start_elevation_m": 294.2694800388708,
   "end_elevation_m": 294.268331355199,
   "start_xy": [
    579013.0877800928,
    4478513.390546947
   ],
   "end_xy": [
    579010.9372857478,
    4478508.879538644
   ]
  },
  "min_10m": {
   "gradient_pct": 1.0582859336221873,
   "start_distance_m": 78.0,
   "end_distance_m": 88.0,
   "midpoint_distance_m": 83.0,
   "start_elevation_m": 294.18546417400034,
   "end_elevation_m": 294.29129276736256,
   "start_xy": [
    579015.0179014925,
    4478516.894063949
   ],
   "end_xy": [
    579010.523137928,
    4478507.969329007
   ]
  },
  "min_20m": {
   "gradient_pct": 3.683218106609445,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 288.3200856301255,
   "end_elevation_m": 289.0567292514474,
   "start_xy": [
    579059.461,
    4478580.816
   ],
   "end_xy": [
    579047.3431584791,
    4478564.905062979
   ]
  },
  "min_25m": {
   "gradient_pct": 4.173914040301497,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 288.3200856301255,
   "end_elevation_m": 289.3635641402009,
   "start_xy": [
    579059.461,
    4478580.816
   ],
   "end_xy": [
    579044.3136980989,
    4478560.9273287235
   ]
  },
  "min_50m": {
   "gradient_pct": 5.471306720751727,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 288.3200856301255,
   "end_elevation_m": 291.05573899050137,
   "start_xy": [
    579059.461,
    4478580.816
   ],
   "end_xy": [
    579029.4156412195,
    4478540.852308747
   ]
  },
  "min_100m": {
   "gradient_pct": 7.804229719374121,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 288.3200856301255,
   "end_elevation_m": 296.1243153494996,
   "start_xy": [
    579059.461,
    4478580.816
   ],
   "end_xy": [
    579005.5533640897,
    4478497.046813362
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.81380831456306,
   "start_distance_m": 228.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 229.0,
   "start_elevation_m": 311.95394475728745,
   "end_elevation_m": 312.5502209235787,
   "start_xy": [
    578950.9171397266,
    4478381.482937343
   ],
   "end_xy": [
    578950.2036930429,
    4478379.614517201
   ]
  },
  "max_3m": {
   "gradient_pct": 29.196757497714998,
   "start_distance_m": 227.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 228.5,
   "start_elevation_m": 311.67431819864726,
   "end_elevation_m": 312.5502209235787,
   "start_xy": [
    578951.2738630684,
    4478382.417147415
   ],
   "end_xy": [
    578950.2036930429,
    4478379.614517201
   ]
  }
 },
 "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_x57y448_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T12:32:39+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": [
   "x57y448"
  ],
  "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": "Pittsburgh",
  "county": "Pennsylvania"
 }
}