{
 "ocl_version": "0.1.0",
 "name": "Overlook Lane",
 "slug": "overlook-lane-3",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.22261523064202,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 360.0,
   "end_distance_m": 362.0,
   "start_elevation_m": 212.52437974344502,
   "end_elevation_m": 213.02883204805786,
   "min_gradient_pct": -11.321512660560984
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.673641492494387,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 359.0,
   "end_distance_m": 362.0,
   "start_elevation_m": 212.28862280328303,
   "end_elevation_m": 213.02883204805786,
   "min_gradient_pct": -10.796228208590719
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.683995449113127,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 359.0,
   "end_distance_m": 364.0,
   "start_elevation_m": 212.28862280328303,
   "end_elevation_m": 213.4728225757387,
   "min_gradient_pct": -10.2150406752952
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.370362117386208,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 353.0,
   "end_distance_m": 363.0,
   "start_elevation_m": 210.92194962662148,
   "end_elevation_m": 213.2589858383601,
   "min_gradient_pct": -9.94565061193697
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.6514120477421,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 349.0,
   "end_distance_m": 369.0,
   "start_elevation_m": 210.0655754546674,
   "end_elevation_m": 214.59585786421582,
   "min_gradient_pct": -9.444014895148172
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.975859897817145,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 348.0,
   "end_distance_m": 373.0,
   "start_elevation_m": 209.87987709754742,
   "end_elevation_m": 215.3738420720017,
   "min_gradient_pct": -9.150298874817395
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.462926583234548,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 329.0,
   "end_distance_m": 379.0,
   "start_elevation_m": 206.6722137347548,
   "end_elevation_m": 216.40367702637207,
   "min_gradient_pct": -8.611408037131525
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.37045367212113,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 289.0,
   "end_distance_m": 389.0,
   "start_elevation_m": 201.3895460766352,
   "end_elevation_m": 217.75999974875634,
   "min_gradient_pct": -6.3527963699684165
  }
 ],
 "shape": {
  "ascent_concentration": 0.571,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 129.0,
  "shape_class": "stepped"
 },
 "length_m": 398.7431642383913,
 "start_elevation_m": 196.6933759252944,
 "end_elevation_m": 218.89611476249112,
 "endpoint_gain_m": 22.202738837196733,
 "overall_gradient_pct": 5.568180430028057,
 "accumulated_ascent_m": 28.719146575364675,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.683995449113127,
   "start_distance_m": 359.0,
   "end_distance_m": 364.0,
   "midpoint_distance_m": 361.5,
   "start_elevation_m": 212.28862280328303,
   "end_elevation_m": 213.4728225757387,
   "start_xy": [
    368108.7040562787,
    4428966.516174141
   ],
   "end_xy": [
    368111.13279630244,
    4428962.145679673
   ]
  },
  "max_10m": {
   "gradient_pct": 23.370362117386208,
   "start_distance_m": 353.0,
   "end_distance_m": 363.0,
   "midpoint_distance_m": 358.0,
   "start_elevation_m": 210.92194962662148,
   "end_elevation_m": 213.2589858383601,
   "start_xy": [
    368105.7895682502,
    4428971.760767503
   ],
   "end_xy": [
    368110.6470482977,
    4428963.019778566
   ]
  },
  "max_20m": {
   "gradient_pct": 22.6514120477421,
   "start_distance_m": 349.0,
   "end_distance_m": 369.0,
   "midpoint_distance_m": 359.0,
   "start_elevation_m": 210.0655754546674,
   "end_elevation_m": 214.59585786421582,
   "start_xy": [
    368103.8465762312,
    4428975.257163078
   ],
   "end_xy": [
    368113.5615363262,
    4428957.775185205
   ]
  },
  "max_25m": {
   "gradient_pct": 21.975859897817145,
   "start_distance_m": 348.0,
   "end_distance_m": 373.0,
   "midpoint_distance_m": 360.5,
   "start_elevation_m": 209.87987709754742,
   "end_elevation_m": 215.3738420720017,
   "start_xy": [
    368103.36082822643,
    4428976.131261972
   ],
   "end_xy": [
    368115.5045283452,
    4428954.27878963
   ]
  },
  "max_50m": {
   "gradient_pct": 19.462926583234548,
   "start_distance_m": 329.0,
   "end_distance_m": 379.0,
   "midpoint_distance_m": 354.0,
   "start_elevation_m": 206.6722137347548,
   "end_elevation_m": 216.40367702637207,
   "start_xy": [
    368094.21086831583,
    4428992.782521999
   ],
   "end_xy": [
    368118.41901637363,
    4428949.034196268
   ]
  },
  "max_100m": {
   "gradient_pct": 16.37045367212113,
   "start_distance_m": 289.0,
   "end_distance_m": 389.0,
   "midpoint_distance_m": 339.0,
   "start_elevation_m": 201.3895460766352,
   "end_elevation_m": 217.75999974875634,
   "start_xy": [
    368075.229314874,
    4429027.9919046825
   ],
   "end_xy": [
    368124.05562145484,
    4428940.8431410575
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.2150406752952,
   "start_distance_m": 150.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 152.5,
   "start_elevation_m": 202.831103917499,
   "end_elevation_m": 202.32035188373425,
   "start_xy": [
    368017.6710718196,
    4429154.401704212
   ],
   "end_xy": [
    368019.56729806983,
    4429149.775223264
   ]
  },
  "min_10m": {
   "gradient_pct": -9.94565061193697,
   "start_distance_m": 151.0,
   "end_distance_m": 161.0,
   "midpoint_distance_m": 156.0,
   "start_elevation_m": 202.72882958038878,
   "end_elevation_m": 201.73426451919508,
   "start_xy": [
    368018.0503016983,
    4429153.476401721
   ],
   "end_xy": [
    368021.8434145369,
    4429144.223710513
   ]
  },
  "min_20m": {
   "gradient_pct": -9.444014895148172,
   "start_distance_m": 150.0,
   "end_distance_m": 170.0,
   "midpoint_distance_m": 160.0,
   "start_elevation_m": 202.831103917499,
   "end_elevation_m": 200.94230093846937,
   "start_xy": [
    368017.6710718196,
    4429154.401704212
   ],
   "end_xy": [
    368025.2575892376,
    4429135.896441385
   ]
  },
  "min_25m": {
   "gradient_pct": -9.150298874817395,
   "start_distance_m": 150.0,
   "end_distance_m": 175.0,
   "midpoint_distance_m": 162.5,
   "start_elevation_m": 202.831103917499,
   "end_elevation_m": 200.54352919879466,
   "start_xy": [
    368017.6710718196,
    4429154.401704212
   ],
   "end_xy": [
    368027.1543529601,
    4429131.270180759
   ]
  },
  "min_50m": {
   "gradient_pct": -8.611408037131525,
   "start_distance_m": 150.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 175.0,
   "start_elevation_m": 202.831103917499,
   "end_elevation_m": 198.52539989893324,
   "start_xy": [
    368017.6710718196,
    4429154.401704212
   ],
   "end_xy": [
    368036.638171573,
    4429108.138877628
   ]
  },
  "min_100m": {
   "gradient_pct": -6.3527963699684165,
   "start_distance_m": 125.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 175.0,
   "start_elevation_m": 203.85429149925335,
   "end_elevation_m": 197.50149512928493,
   "start_xy": [
    368008.1903248521,
    4429177.5342664765
   ],
   "end_xy": [
    368046.55634195195,
    4429085.203676691
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.22261523064202,
   "start_distance_m": 360.0,
   "end_distance_m": 362.0,
   "midpoint_distance_m": 361.0,
   "start_elevation_m": 212.52437974344502,
   "end_elevation_m": 213.02883204805786,
   "start_xy": [
    368109.18980428344,
    4428965.642075247
   ],
   "end_xy": [
    368110.16130029294,
    4428963.893877461
   ]
  },
  "max_3m": {
   "gradient_pct": 24.673641492494387,
   "start_distance_m": 359.0,
   "end_distance_m": 362.0,
   "midpoint_distance_m": 360.5,
   "start_elevation_m": 212.28862280328303,
   "end_elevation_m": 213.02883204805786,
   "start_xy": [
    368108.7040562787,
    4428966.516174141
   ],
   "end_xy": [
    368110.16130029294,
    4428963.893877461
   ]
  }
 },
 "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_x36y443_PA_Sandy_2014.tif"
  ],
  "calculated_at": "2026-09-07T13:52:27+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-band3.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_Sandy_2014 (collected 2014)",
  "elevation_tile_ids": [
   "x36y443"
  ],
  "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": "Hellam",
  "county": "Pennsylvania"
 },
 "review_flags": [
  {
   "kind": "possible-bridge-or-hollow",
   "span_m": [
    165.0,
    335.0
   ],
   "status": "pending-human-review",
   "noted": "2026-09-21",
   "figure_adjusted": false
  }
 ]
}