{
 "ocl_version": "0.1.0",
 "name": "Sunny Drive",
 "slug": "sunny-drive-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.00733293663768,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 245.0,
   "end_distance_m": 247.0,
   "start_elevation_m": 262.5779611599201,
   "end_elevation_m": 263.03810781865286,
   "min_gradient_pct": -6.015352582491573
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.49357881944813,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 245.0,
   "end_distance_m": 248.0,
   "start_elevation_m": 262.5779611599201,
   "end_elevation_m": 263.25276852450355,
   "min_gradient_pct": -5.588001256063535
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.732212392016663,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 232.0,
   "end_distance_m": 237.0,
   "start_elevation_m": 259.8773181763454,
   "end_elevation_m": 260.96392879594623,
   "min_gradient_pct": -5.400200342882044
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.452101663018652,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 245.0,
   "end_distance_m": 255.0,
   "start_elevation_m": 262.5779611599201,
   "end_elevation_m": 264.723171326222,
   "min_gradient_pct": -5.125165352346244
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.102810318159584,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 245.0,
   "end_distance_m": 265.0,
   "start_elevation_m": 262.5779611599201,
   "end_elevation_m": 266.798523223552,
   "min_gradient_pct": -4.765340799256137
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.038142111833167,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 231.0,
   "end_distance_m": 256.0,
   "start_elevation_m": 259.67256276029786,
   "end_elevation_m": 264.93209828825616,
   "min_gradient_pct": -4.632723737788183
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.656588377261983,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 214.0,
   "end_distance_m": 264.0,
   "start_elevation_m": 256.2727112327888,
   "end_elevation_m": 266.6010054214198,
   "min_gradient_pct": -4.054999747525244
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.258765617656138,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 208.0,
   "end_distance_m": 308.0,
   "start_elevation_m": 255.05892518328398,
   "end_elevation_m": 275.3176908009401,
   "min_gradient_pct": -2.919339467268344
  }
 ],
 "shape": {
  "ascent_concentration": 0.547,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 158.0,
  "shape_class": "stepped"
 },
 "length_m": 715.000000000143,
 "start_elevation_m": 244.71051151534795,
 "end_elevation_m": 298.8262520499392,
 "endpoint_gain_m": 54.11574053459128,
 "overall_gradient_pct": 7.568635039801462,
 "accumulated_ascent_m": 57.10800361243915,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.732212392016663,
   "start_distance_m": 232.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 234.5,
   "start_elevation_m": 259.8773181763454,
   "end_elevation_m": 260.96392879594623,
   "start_xy": [
    410802.07210346113,
    4512283.814127713
   ],
   "end_xy": [
    410804.8806399283,
    4512287.950807893
   ]
  },
  "max_10m": {
   "gradient_pct": 21.452101663018652,
   "start_distance_m": 245.0,
   "end_distance_m": 255.0,
   "midpoint_distance_m": 250.0,
   "start_elevation_m": 262.5779611599201,
   "end_elevation_m": 264.723171326222,
   "start_xy": [
    410809.37429827574,
    4512294.569496182
   ],
   "end_xy": [
    410814.99137120997,
    4512302.842856541
   ]
  },
  "max_20m": {
   "gradient_pct": 21.102810318159584,
   "start_distance_m": 245.0,
   "end_distance_m": 265.0,
   "midpoint_distance_m": 255.0,
   "start_elevation_m": 262.5779611599201,
   "end_elevation_m": 266.798523223552,
   "start_xy": [
    410809.37429827574,
    4512294.569496182
   ],
   "end_xy": [
    410820.60844414425,
    4512311.116216902
   ]
  },
  "max_25m": {
   "gradient_pct": 21.038142111833167,
   "start_distance_m": 231.0,
   "end_distance_m": 256.0,
   "midpoint_distance_m": 243.5,
   "start_elevation_m": 259.67256276029786,
   "end_elevation_m": 264.93209828825616,
   "start_xy": [
    410801.51039616775,
    4512282.986791677
   ],
   "end_xy": [
    410815.5530785034,
    4512303.670192578
   ]
  },
  "max_50m": {
   "gradient_pct": 20.656588377261983,
   "start_distance_m": 214.0,
   "end_distance_m": 264.0,
   "midpoint_distance_m": 239.0,
   "start_elevation_m": 256.2727112327888,
   "end_elevation_m": 266.6010054214198,
   "start_xy": [
    410791.96137217944,
    4512268.922079065
   ],
   "end_xy": [
    410820.0467368508,
    4512310.288880866
   ]
  },
  "max_100m": {
   "gradient_pct": 20.258765617656138,
   "start_distance_m": 208.0,
   "end_distance_m": 308.0,
   "midpoint_distance_m": 258.0,
   "start_elevation_m": 255.05892518328398,
   "end_elevation_m": 275.3176908009401,
   "start_xy": [
    410788.5911284189,
    4512263.958062848
   ],
   "end_xy": [
    410844.7887863301,
    4512346.6733264625
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.400200342882044,
   "start_distance_m": 578.0,
   "end_distance_m": 583.0,
   "midpoint_distance_m": 580.5,
   "start_elevation_m": 291.38417888717026,
   "end_elevation_m": 291.11416887002616,
   "start_xy": [
    410991.2107123137,
    4512573.466522564
   ],
   "end_xy": [
    410993.8281074984,
    4512577.726715336
   ]
  },
  "min_10m": {
   "gradient_pct": -5.125165352346244,
   "start_distance_m": 573.0,
   "end_distance_m": 583.0,
   "midpoint_distance_m": 578.0,
   "start_elevation_m": 291.6266854052608,
   "end_elevation_m": 291.11416887002616,
   "start_xy": [
    410988.593317129,
    4512569.206329793
   ],
   "end_xy": [
    410993.8281074984,
    4512577.726715336
   ]
  },
  "min_20m": {
   "gradient_pct": -4.765340799256137,
   "start_distance_m": 565.0,
   "end_distance_m": 585.0,
   "midpoint_distance_m": 575.0,
   "start_elevation_m": 291.9758978615646,
   "end_elevation_m": 291.02282970171336,
   "start_xy": [
    410984.40548483346,
    4512562.39002136
   ],
   "end_xy": [
    410994.8750655723,
    4512579.430792443
   ]
  },
  "min_25m": {
   "gradient_pct": -4.632723737788183,
   "start_distance_m": 560.0,
   "end_distance_m": 585.0,
   "midpoint_distance_m": 572.5,
   "start_elevation_m": 292.1810106361604,
   "end_elevation_m": 291.02282970171336,
   "start_xy": [
    410981.7880896487,
    4512558.129828588
   ],
   "end_xy": [
    410994.8750655723,
    4512579.430792443
   ]
  },
  "min_50m": {
   "gradient_pct": -4.054999747525244,
   "start_distance_m": 557.0,
   "end_distance_m": 607.0,
   "midpoint_distance_m": 582.0,
   "start_elevation_m": 292.2660082090472,
   "end_elevation_m": 290.23850833528456,
   "start_xy": [
    410980.2176525379,
    4512555.573712925
   ],
   "end_xy": [
    411006.39160438505,
    4512598.175640636
   ]
  },
  "min_100m": {
   "gradient_pct": -2.919339467268344,
   "start_distance_m": 524.0,
   "end_distance_m": 624.0,
   "midpoint_distance_m": 574.0,
   "start_elevation_m": 292.7794480264885,
   "end_elevation_m": 289.8601085592202,
   "start_xy": [
    410962.9566686603,
    4512527.447952281
   ],
   "end_xy": [
    411015.29074801307,
    4512612.660296058
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.00733293663768,
   "start_distance_m": 245.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 246.0,
   "start_elevation_m": 262.5779611599201,
   "end_elevation_m": 263.03810781865286,
   "start_xy": [
    410809.37429827574,
    4512294.569496182
   ],
   "end_xy": [
    410810.49771286256,
    4512296.224168253
   ]
  },
  "max_3m": {
   "gradient_pct": 22.49357881944813,
   "start_distance_m": 245.0,
   "end_distance_m": 248.0,
   "midpoint_distance_m": 246.5,
   "start_elevation_m": 262.5779611599201,
   "end_elevation_m": 263.25276852450355,
   "start_xy": [
    410809.37429827574,
    4512294.569496182
   ],
   "end_xy": [
    410811.059420156,
    4512297.05150429
   ]
  }
 },
 "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa/USGS_1M_18_x41y452_PA_3_County_South_Central_2018_D18.tif"
  ],
  "calculated_at": "2026-09-07T17:23:41+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-band4.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_3_County_South_Central_2018_D18 (collected 2018)",
  "elevation_tile_ids": [
   "x41y452"
  ],
  "route_summit_trim_m": 63.9,
  "route_summit_trim_loss_m": 3.0,
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_3_County_South_Central_2018_D18: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Schuylkill",
  "county": "Pennsylvania"
 }
}