{
 "ocl_version": "0.1.0",
 "name": "Gable Drive",
 "slug": "gable-drive",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.70564329460518,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 594.0,
   "end_distance_m": 596.0,
   "start_elevation_m": 231.5537006349979,
   "end_elevation_m": 231.98781350089,
   "min_gradient_pct": -15.521431971653499
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.54615742739452,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 600.0,
   "end_distance_m": 603.0,
   "start_elevation_m": 232.82076119671365,
   "end_elevation_m": 233.46714591953548,
   "min_gradient_pct": -15.399838377406164
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.26713260449378,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 598.0,
   "end_distance_m": 603.0,
   "start_elevation_m": 232.4037892893108,
   "end_elevation_m": 233.46714591953548,
   "min_gradient_pct": -15.254896261183717
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.13317763671546,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 593.0,
   "end_distance_m": 603.0,
   "start_elevation_m": 231.35382815586394,
   "end_elevation_m": 233.46714591953548,
   "min_gradient_pct": -15.230300920369189
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.82007624710343,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 583.0,
   "end_distance_m": 603.0,
   "start_elevation_m": 229.3031306701148,
   "end_elevation_m": 233.46714591953548,
   "min_gradient_pct": -14.913204304645404
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.63040392699679,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 581.0,
   "end_distance_m": 606.0,
   "start_elevation_m": 228.89390907852336,
   "end_elevation_m": 234.05151006027256,
   "min_gradient_pct": -14.701563797360564
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.416145540008984,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 553.0,
   "end_distance_m": 603.0,
   "start_elevation_m": 223.259073149531,
   "end_elevation_m": 233.46714591953548,
   "min_gradient_pct": -13.542996994155942
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.309012715145627,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 520.0,
   "end_distance_m": 620.0,
   "start_elevation_m": 218.04014594474808,
   "end_elevation_m": 236.3491586598937,
   "min_gradient_pct": -10.050975546927987
  }
 ],
 "shape": {
  "ascent_concentration": 0.433,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 334.0,
  "shape_class": "sustained"
 },
 "length_m": 1275.4612321903912,
 "start_elevation_m": 189.1917772139197,
 "end_elevation_m": 281.3946628460709,
 "endpoint_gain_m": 92.20288563215121,
 "overall_gradient_pct": 7.228983782894614,
 "accumulated_ascent_m": 107.64082819886593,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.26713260449378,
   "start_distance_m": 598.0,
   "end_distance_m": 603.0,
   "midpoint_distance_m": 600.5,
   "start_elevation_m": 232.4037892893108,
   "end_elevation_m": 233.46714591953548,
   "start_xy": [
    462998.8111445179,
    4482991.68580025
   ],
   "end_xy": [
    463001.5905669067,
    4482995.842098024
   ]
  },
  "max_10m": {
   "gradient_pct": 21.13317763671546,
   "start_distance_m": 593.0,
   "end_distance_m": 603.0,
   "midpoint_distance_m": 598.0,
   "start_elevation_m": 231.35382815586394,
   "end_elevation_m": 233.46714591953548,
   "start_xy": [
    462995.6782213633,
    4482987.811535904
   ],
   "end_xy": [
    463001.5905669067,
    4482995.842098024
   ]
  },
  "max_20m": {
   "gradient_pct": 20.82007624710343,
   "start_distance_m": 583.0,
   "end_distance_m": 603.0,
   "midpoint_distance_m": 593.0,
   "start_elevation_m": 229.3031306701148,
   "end_elevation_m": 233.46714591953548,
   "start_xy": [
    462988.2719092174,
    4482981.148730423
   ],
   "end_xy": [
    463001.5905669067,
    4482995.842098024
   ]
  },
  "max_25m": {
   "gradient_pct": 20.63040392699679,
   "start_distance_m": 581.0,
   "end_distance_m": 606.0,
   "midpoint_distance_m": 593.5,
   "start_elevation_m": 228.89390907852336,
   "end_elevation_m": 234.05151006027256,
   "start_xy": [
    462986.66679266177,
    4482979.955582971
   ],
   "end_xy": [
    463002.89209594455,
    4482998.5356022855
   ]
  },
  "max_50m": {
   "gradient_pct": 20.416145540008984,
   "start_distance_m": 553.0,
   "end_distance_m": 603.0,
   "midpoint_distance_m": 578.0,
   "start_elevation_m": 223.259073149531,
   "end_elevation_m": 233.46714591953548,
   "start_xy": [
    462960.2431424607,
    4482971.658418178
   ],
   "end_xy": [
    463001.5905669067,
    4482995.842098024
   ]
  },
  "max_100m": {
   "gradient_pct": 18.309012715145627,
   "start_distance_m": 520.0,
   "end_distance_m": 620.0,
   "midpoint_distance_m": 570.0,
   "start_elevation_m": 218.04014594474808,
   "end_elevation_m": 236.3491586598937,
   "start_xy": [
    462927.6100761732,
    4482966.750976412
   ],
   "end_xy": [
    463007.06862143043,
    4483011.837987645
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -15.254896261183717,
   "start_distance_m": 722.0,
   "end_distance_m": 727.0,
   "midpoint_distance_m": 724.5,
   "start_elevation_m": 234.41313941598992,
   "end_elevation_m": 233.65039460293073,
   "start_xy": [
    462997.9465177866,
    4483113.325626848
   ],
   "end_xy": [
    462997.4417742905,
    4483118.30008501
   ]
  },
  "min_10m": {
   "gradient_pct": -15.230300920369189,
   "start_distance_m": 717.0,
   "end_distance_m": 727.0,
   "midpoint_distance_m": 722.0,
   "start_elevation_m": 235.17342469496765,
   "end_elevation_m": 233.65039460293073,
   "start_xy": [
    462998.4512612826,
    4483108.3511686865
   ],
   "end_xy": [
    462997.4417742905,
    4483118.30008501
   ]
  },
  "min_20m": {
   "gradient_pct": -14.913204304645404,
   "start_distance_m": 712.0,
   "end_distance_m": 732.0,
   "midpoint_distance_m": 722.0,
   "start_elevation_m": 235.90604695500383,
   "end_elevation_m": 232.92340609407475,
   "start_xy": [
    462998.9560047787,
    4483103.376710525
   ],
   "end_xy": [
    462996.9370307945,
    4483123.274543172
   ]
  },
  "min_25m": {
   "gradient_pct": -14.701563797360564,
   "start_distance_m": 706.0,
   "end_distance_m": 731.0,
   "midpoint_distance_m": 718.5,
   "start_elevation_m": 236.73916464089405,
   "end_elevation_m": 233.0637736915539,
   "start_xy": [
    462999.568563185,
    4483097.40806858
   ],
   "end_xy": [
    462997.0379794937,
    4483122.279651539
   ]
  },
  "min_50m": {
   "gradient_pct": -13.542996994155942,
   "start_distance_m": 694.0,
   "end_distance_m": 744.0,
   "midpoint_distance_m": 719.0,
   "start_elevation_m": 238.29039851227938,
   "end_elevation_m": 231.5189000152014,
   "start_xy": [
    463000.8183312257,
    4483085.4733260255
   ],
   "end_xy": [
    462995.97106642585,
    4483135.228133562
   ]
  },
  "min_100m": {
   "gradient_pct": -10.050975546927987,
   "start_distance_m": 689.0,
   "end_distance_m": 789.0,
   "midpoint_distance_m": 739.0,
   "start_elevation_m": 238.71091103842826,
   "end_elevation_m": 228.65993549150028,
   "start_xy": [
    463001.33906790934,
    4483080.500516628
   ],
   "end_xy": [
    463001.0908657462,
    4483179.716788641
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.70564329460518,
   "start_distance_m": 594.0,
   "end_distance_m": 596.0,
   "midpoint_distance_m": 595.0,
   "start_elevation_m": 231.5537006349979,
   "end_elevation_m": 231.98781350089,
   "start_xy": [
    462996.36526014324,
    4482988.538156655
   ],
   "end_xy": [
    462997.69937556237,
    4482990.02328114
   ]
  },
  "max_3m": {
   "gradient_pct": 21.54615742739452,
   "start_distance_m": 600.0,
   "end_distance_m": 603.0,
   "midpoint_distance_m": 601.5,
   "start_elevation_m": 232.82076119671365,
   "end_elevation_m": 233.46714591953548,
   "start_xy": [
    462999.92291347345,
    4482993.348319359
   ],
   "end_xy": [
    463001.5905669067,
    4482995.842098024
   ]
  }
 },
 "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"
  ]
 },
 "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_x46y449_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-07T12:53:27+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_Northcentral_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x46y449"
  ],
  "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": "Lower Milford",
  "county": "Pennsylvania"
 }
}