{
 "ocl_version": "0.1.0",
 "name": "Patterson Avenue",
 "slug": "patterson-avenue-4",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.579267376168332,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 60.0,
   "end_distance_m": 62.0,
   "start_elevation_m": 203.70748582782215,
   "end_elevation_m": 204.13907117534552,
   "min_gradient_pct": -1.4208084467568938
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.341886592710086,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 60.0,
   "end_distance_m": 63.0,
   "start_elevation_m": 203.70748582782215,
   "end_elevation_m": 204.34774242560346,
   "min_gradient_pct": -0.6927843796868652
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.28056311734838,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 60.0,
   "end_distance_m": 65.0,
   "start_elevation_m": 203.70748582782215,
   "end_elevation_m": 204.77151398368957,
   "min_gradient_pct": -0.3455543520738047
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.671488860909335,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 60.0,
   "end_distance_m": 70.0,
   "start_elevation_m": 203.70748582782215,
   "end_elevation_m": 205.7746347139131,
   "min_gradient_pct": 0.8692409496339337
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.415679068229053,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 60.0,
   "end_distance_m": 80.0,
   "start_elevation_m": 203.70748582782215,
   "end_elevation_m": 207.79062164146796,
   "min_gradient_pct": 1.7759357683888766
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.387610788670827,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 59.0,
   "end_distance_m": 84.0,
   "start_elevation_m": 203.5063010095924,
   "end_elevation_m": 208.6032037067601,
   "min_gradient_pct": 1.968602345467275
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.935895856961736,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 58.0,
   "end_distance_m": 108.0,
   "start_elevation_m": 203.30501861645428,
   "end_elevation_m": 212.77296654493514,
   "min_gradient_pct": 2.983943997593258
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.578873699376288,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 58.0,
   "end_distance_m": 158.0,
   "start_elevation_m": 203.30501861645428,
   "end_elevation_m": 220.88389231583056,
   "min_gradient_pct": 4.886116461749424
  }
 ],
 "shape": {
  "ascent_concentration": 0.379,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 114.0,
  "shape_class": "sustained"
 },
 "length_m": 260.5000000000147,
 "start_elevation_m": 195.2695348095647,
 "end_elevation_m": 226.04749544038634,
 "endpoint_gain_m": 30.77796063082164,
 "overall_gradient_pct": 11.81495609628403,
 "accumulated_ascent_m": 30.851678743233663,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.28056311734838,
   "start_distance_m": 60.0,
   "end_distance_m": 65.0,
   "midpoint_distance_m": 62.5,
   "start_elevation_m": 203.70748582782215,
   "end_elevation_m": 204.77151398368957,
   "start_xy": [
    365301.16333986353,
    4419524.902178384
   ],
   "end_xy": [
    365303.4452600708,
    4419520.453264336
   ]
  },
  "max_10m": {
   "gradient_pct": 20.671488860909335,
   "start_distance_m": 60.0,
   "end_distance_m": 70.0,
   "midpoint_distance_m": 65.0,
   "start_elevation_m": 203.70748582782215,
   "end_elevation_m": 205.7746347139131,
   "start_xy": [
    365301.16333986353,
    4419524.902178384
   ],
   "end_xy": [
    365305.7264167008,
    4419516.003958632
   ]
  },
  "max_20m": {
   "gradient_pct": 20.415679068229053,
   "start_distance_m": 60.0,
   "end_distance_m": 80.0,
   "midpoint_distance_m": 70.0,
   "start_elevation_m": 203.70748582782215,
   "end_elevation_m": 207.79062164146796,
   "start_xy": [
    365301.16333986353,
    4419524.902178384
   ],
   "end_xy": [
    365310.28832418285,
    4419507.105139204
   ]
  },
  "max_25m": {
   "gradient_pct": 20.387610788670827,
   "start_distance_m": 59.0,
   "end_distance_m": 84.0,
   "midpoint_distance_m": 71.5,
   "start_elevation_m": 203.5063010095924,
   "end_elevation_m": 208.6032037067601,
   "start_xy": [
    365300.5745868159,
    4419525.709937871
   ],
   "end_xy": [
    365312.04069055384,
    4419503.510437726
   ]
  },
  "max_50m": {
   "gradient_pct": 18.935895856961736,
   "start_distance_m": 58.0,
   "end_distance_m": 108.0,
   "midpoint_distance_m": 83.0,
   "start_elevation_m": 203.30501861645428,
   "end_elevation_m": 212.77296654493514,
   "start_xy": [
    365299.848205648,
    4419526.396732973
   ],
   "end_xy": [
    365321.90765091666,
    4419481.632525584
   ]
  },
  "max_100m": {
   "gradient_pct": 17.578873699376288,
   "start_distance_m": 58.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 108.0,
   "start_elevation_m": 203.30501861645428,
   "end_elevation_m": 220.88389231583056,
   "start_xy": [
    365299.848205648,
    4419526.396732973
   ],
   "end_xy": [
    365346.3880872469,
    4419438.277829405
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.3455543520738047,
   "start_distance_m": 3.0,
   "end_distance_m": 8.0,
   "midpoint_distance_m": 5.5,
   "start_elevation_m": 195.33324733997438,
   "end_elevation_m": 195.3159696223707,
   "start_xy": [
    365276.13390883966,
    4419575.507214729
   ],
   "end_xy": [
    365278.0909456855,
    4419570.906127938
   ]
  },
  "min_10m": {
   "gradient_pct": 0.8692409496339337,
   "start_distance_m": 189.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 194.0,
   "start_elevation_m": 222.77363531535457,
   "end_elevation_m": 222.86055941031796,
   "start_xy": [
    365332.69804850855,
    4419412.58433456
   ],
   "end_xy": [
    365324.39469974133,
    4419407.011690067
   ]
  },
  "min_20m": {
   "gradient_pct": 1.7759357683888766,
   "start_distance_m": 182.0,
   "end_distance_m": 202.0,
   "midpoint_distance_m": 192.0,
   "start_elevation_m": 222.61733493632482,
   "end_elevation_m": 222.9725220900026,
   "start_xy": [
    365338.4586236011,
    4419416.561210254
   ],
   "end_xy": [
    365321.90379179124,
    4419405.339751841
   ]
  },
  "min_25m": {
   "gradient_pct": 1.968602345467275,
   "start_distance_m": 190.0,
   "end_distance_m": 215.0,
   "midpoint_distance_m": 202.5,
   "start_elevation_m": 222.8046590434226,
   "end_elevation_m": 223.2968096297894,
   "start_xy": [
    365331.8674785125,
    4419412.027420494
   ],
   "end_xy": [
    365311.1093451462,
    4419398.095452104
   ]
  },
  "min_50m": {
   "gradient_pct": 2.983943997593258,
   "start_distance_m": 176.0,
   "end_distance_m": 226.0,
   "midpoint_distance_m": 201.0,
   "start_elevation_m": 222.32053579879755,
   "end_elevation_m": 223.81250779759418,
   "start_xy": [
    365341.4975018335,
    4419421.717476592
   ],
   "end_xy": [
    365302.9827747415,
    4419390.922928177
   ]
  },
  "min_100m": {
   "gradient_pct": 4.886116461749424,
   "start_distance_m": 160.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 210.0,
   "start_elevation_m": 221.14995761776717,
   "end_elevation_m": 226.0360740795166,
   "start_xy": [
    365347.008213253,
    4419436.376397408
   ],
   "end_xy": [
    365282.018119717,
    4419366.534173127
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.579267376168332,
   "start_distance_m": 60.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 61.0,
   "start_elevation_m": 203.70748582782215,
   "end_elevation_m": 204.13907117534552,
   "start_xy": [
    365301.16333986353,
    4419524.902178384
   ],
   "end_xy": [
    365302.0761013531,
    4419523.1226094235
   ]
  },
  "max_3m": {
   "gradient_pct": 21.341886592710086,
   "start_distance_m": 60.0,
   "end_distance_m": 63.0,
   "midpoint_distance_m": 61.5,
   "start_elevation_m": 203.70748582782215,
   "end_elevation_m": 204.34774242560346,
   "start_xy": [
    365301.16333986353,
    4419524.902178384
   ],
   "end_xy": [
    365302.53248459514,
    4419522.232826119
   ]
  }
 },
 "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa/USGS_one_meter_x36y442_PA_Sandy_2014.tif"
  ],
  "calculated_at": "2026-09-08T18:14:10+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.osm.pbf",
  "osm_snapshot": "2026-09-06T20:21:35Z",
  "run_id": "retro-box-260908",
  "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_Sandy_2014 (collected 2014)",
  "elevation_tile_ids": [
   "x36y442"
  ],
  "route_cut_m": 260.5,
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Windsor",
  "county": "Pennsylvania"
 }
}