{
 "ocl_version": "0.1.0",
 "name": "11th Street",
 "slug": "11th-street-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.911294120465755,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 269.0,
   "end_distance_m": 271.0,
   "start_elevation_m": 262.6665903936372,
   "end_elevation_m": 263.1648162760465,
   "min_gradient_pct": -2.5791027343174733
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.3694682447862,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 269.0,
   "end_distance_m": 272.0,
   "start_elevation_m": 262.6665903936372,
   "end_elevation_m": 263.3976744409808,
   "min_gradient_pct": -2.301666385538207
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.06188322622802,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 268.0,
   "end_distance_m": 273.0,
   "start_elevation_m": 262.44922791176907,
   "end_elevation_m": 263.6023220730805,
   "min_gradient_pct": -2.013303196509355
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.71106098126245,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 268.0,
   "end_distance_m": 278.0,
   "start_elevation_m": 262.44922791176907,
   "end_elevation_m": 264.6203340098953,
   "min_gradient_pct": -0.48246455983928627
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.076717506970084,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 207.0,
   "end_distance_m": 227.0,
   "start_elevation_m": 250.81977880940246,
   "end_elevation_m": 255.03512231079648,
   "min_gradient_pct": 5.114716817350313
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.02542603008726,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 187.0,
   "end_distance_m": 212.0,
   "start_elevation_m": 246.6296507695678,
   "end_elevation_m": 251.88600727708962,
   "min_gradient_pct": 7.3150244801177
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.99444769804955,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 205.0,
   "end_distance_m": 255.0,
   "start_elevation_m": 250.40826469716947,
   "end_elevation_m": 260.90548854619425,
   "min_gradient_pct": 11.9894778454306
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.876454065897263,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 183.0,
   "end_distance_m": 283.0,
   "start_elevation_m": 245.81338132013937,
   "end_elevation_m": 265.68983538603663,
   "min_gradient_pct": 13.292968957133496
  }
 ],
 "shape": {
  "ascent_concentration": 0.313,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 159.0,
  "shape_class": "sustained"
 },
 "length_m": 305.31743043789925,
 "start_elevation_m": 218.71185467675812,
 "end_elevation_m": 269.42588152846594,
 "endpoint_gain_m": 50.714026851707814,
 "overall_gradient_pct": 16.610262564758127,
 "accumulated_ascent_m": 50.820431877468025,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.06188322622802,
   "start_distance_m": 268.0,
   "end_distance_m": 273.0,
   "midpoint_distance_m": 270.5,
   "start_elevation_m": 262.44922791176907,
   "end_elevation_m": 263.6023220730805,
   "start_xy": [
    563430.4505589402,
    4503997.177719337
   ],
   "end_xy": [
    563434.6124801517,
    4503999.948714073
   ]
  },
  "max_10m": {
   "gradient_pct": 21.71106098126245,
   "start_distance_m": 268.0,
   "end_distance_m": 278.0,
   "midpoint_distance_m": 273.0,
   "start_elevation_m": 262.44922791176907,
   "end_elevation_m": 264.6203340098953,
   "start_xy": [
    563430.4505589402,
    4503997.177719337
   ],
   "end_xy": [
    563438.7744013632,
    4504002.71970881
   ]
  },
  "max_20m": {
   "gradient_pct": 21.076717506970084,
   "start_distance_m": 207.0,
   "end_distance_m": 227.0,
   "midpoint_distance_m": 217.0,
   "start_elevation_m": 250.81977880940246,
   "end_elevation_m": 255.03512231079648,
   "start_xy": [
    563379.3677911354,
    4503963.839196581
   ],
   "end_xy": [
    563396.114451743,
    4503974.772582445
   ]
  },
  "max_25m": {
   "gradient_pct": 21.02542603008726,
   "start_distance_m": 187.0,
   "end_distance_m": 212.0,
   "midpoint_distance_m": 199.5,
   "start_elevation_m": 246.6296507695678,
   "end_elevation_m": 251.88600727708962,
   "start_xy": [
    563362.5702795633,
    4503952.983617141
   ],
   "end_xy": [
    563383.5593581203,
    4503966.565017483
   ]
  },
  "max_50m": {
   "gradient_pct": 20.99444769804955,
   "start_distance_m": 205.0,
   "end_distance_m": 255.0,
   "midpoint_distance_m": 230.0,
   "start_elevation_m": 250.40826469716947,
   "end_elevation_m": 260.90548854619425,
   "start_xy": [
    563377.6880399782,
    4503962.753638637
   ],
   "end_xy": [
    563419.6046151229,
    4503990.011093671
   ]
  },
  "max_100m": {
   "gradient_pct": 19.876454065897263,
   "start_distance_m": 183.0,
   "end_distance_m": 283.0,
   "midpoint_distance_m": 233.0,
   "start_elevation_m": 245.81338132013937,
   "end_elevation_m": 265.68983538603663,
   "start_xy": [
    563359.210777249,
    4503950.812501253
   ],
   "end_xy": [
    563442.9363225747,
    4504005.4907035455
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.013303196509355,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 218.71185467675812,
   "end_elevation_m": 218.61118951693265,
   "start_xy": [
    563205.654,
    4503851.267
   ],
   "end_xy": [
    563209.8492189478,
    4503853.987319463
   ]
  },
  "min_10m": {
   "gradient_pct": -0.48246455983928627,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 218.71185467675812,
   "end_elevation_m": 218.6636082207742,
   "start_xy": [
    563205.654,
    4503851.267
   ],
   "end_xy": [
    563214.0444378956,
    4503856.707638926
   ]
  },
  "min_20m": {
   "gradient_pct": 5.114716817350313,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 218.71185467675812,
   "end_elevation_m": 219.73479804022818,
   "start_xy": [
    563205.654,
    4503851.267
   ],
   "end_xy": [
    563222.4348757912,
    4503862.148277852
   ]
  },
  "min_25m": {
   "gradient_pct": 7.3150244801177,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 218.71185467675812,
   "end_elevation_m": 220.54061079678755,
   "start_xy": [
    563205.654,
    4503851.267
   ],
   "end_xy": [
    563226.630094739,
    4503864.868597315
   ]
  },
  "min_50m": {
   "gradient_pct": 11.9894778454306,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 218.71185467675812,
   "end_elevation_m": 224.70659359947342,
   "start_xy": [
    563205.654,
    4503851.267
   ],
   "end_xy": [
    563247.6061894781,
    4503878.470194628
   ]
  },
  "min_100m": {
   "gradient_pct": 13.292968957133496,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 218.71185467675812,
   "end_elevation_m": 232.00482363389162,
   "start_xy": [
    563205.654,
    4503851.267
   ],
   "end_xy": [
    563289.5599005633,
    4503905.671042469
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.911294120465755,
   "start_distance_m": 269.0,
   "end_distance_m": 271.0,
   "midpoint_distance_m": 270.0,
   "start_elevation_m": 262.6665903936372,
   "end_elevation_m": 263.1648162760465,
   "start_xy": [
    563431.2829431824,
    4503997.731918284
   ],
   "end_xy": [
    563432.947711667,
    4503998.840316178
   ]
  },
  "max_3m": {
   "gradient_pct": 24.3694682447862,
   "start_distance_m": 269.0,
   "end_distance_m": 272.0,
   "midpoint_distance_m": 270.5,
   "start_elevation_m": 262.6665903936372,
   "end_elevation_m": 263.3976744409808,
   "start_xy": [
    563431.2829431824,
    4503997.731918284
   ],
   "end_xy": [
    563433.7800959094,
    4503999.394515126
   ]
  }
 },
 "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_x56y451_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T13:03:57+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": [
   "x56y451"
  ],
  "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": "Freedom",
  "county": "Pennsylvania"
 }
}