{
 "ocl_version": "0.1.0",
 "name": "Ransom Road",
 "slug": "ransom-road-3",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 18.560056062787567,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 691.0,
   "end_distance_m": 693.0,
   "start_elevation_m": 385.5235317719768,
   "end_elevation_m": 385.8947328932326,
   "min_gradient_pct": -8.42397855598449
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 18.565478667803365,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 691.0,
   "end_distance_m": 694.0,
   "start_elevation_m": 385.5235317719768,
   "end_elevation_m": 386.0804961320109,
   "min_gradient_pct": -8.327672631882402
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 18.463585199522186,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 690.0,
   "end_distance_m": 695.0,
   "start_elevation_m": 385.3410791960592,
   "end_elevation_m": 386.2642584560353,
   "min_gradient_pct": -8.275758536916555
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 18.351129810724274,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 686.0,
   "end_distance_m": 696.0,
   "start_elevation_m": 384.6111244113924,
   "end_elevation_m": 386.4462373924648,
   "min_gradient_pct": -8.018382087611258
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.73487337142285,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 680.0,
   "end_distance_m": 700.0,
   "start_elevation_m": 383.5879506059466,
   "end_elevation_m": 387.1349252802312,
   "min_gradient_pct": -7.78332561383678
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.224061654242178,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 676.0,
   "end_distance_m": 701.0,
   "start_elevation_m": 382.9814196456231,
   "end_elevation_m": 387.2874350591836,
   "min_gradient_pct": -7.697042394914433
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.21428174507355,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 523.0,
   "end_distance_m": 573.0,
   "start_elevation_m": 359.9589617661245,
   "end_elevation_m": 368.0661026386613,
   "min_gradient_pct": -7.408823475798954
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.703206351774384,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 471.0,
   "end_distance_m": 571.0,
   "start_elevation_m": 352.0639548288396,
   "end_elevation_m": 367.767161180614,
   "min_gradient_pct": -6.159229201367054
  }
 ],
 "shape": {
  "ascent_concentration": 0.495,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 269.0,
  "shape_class": "stepped"
 },
 "length_m": 2687.0135591394005,
 "start_elevation_m": 346.28884521640595,
 "end_elevation_m": 485.725158902887,
 "endpoint_gain_m": 139.43631368648107,
 "overall_gradient_pct": 5.189267214979737,
 "accumulated_ascent_m": 155.52793080902154,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 18.463585199522186,
   "start_distance_m": 690.0,
   "end_distance_m": 695.0,
   "midpoint_distance_m": 692.5,
   "start_elevation_m": 385.3410791960592,
   "end_elevation_m": 386.2642584560353,
   "start_xy": [
    434769.63681234705,
    4584238.25938154
   ],
   "end_xy": [
    434769.7257995413,
    4584233.273540161
   ]
  },
  "max_10m": {
   "gradient_pct": 18.351129810724274,
   "start_distance_m": 686.0,
   "end_distance_m": 696.0,
   "midpoint_distance_m": 691.0,
   "start_elevation_m": 384.6111244113924,
   "end_elevation_m": 386.4462373924648,
   "start_xy": [
    434769.8513290378,
    4584242.253625222
   ],
   "end_xy": [
    434769.8183121575,
    4584232.277828649
   ]
  },
  "max_20m": {
   "gradient_pct": 17.73487337142285,
   "start_distance_m": 680.0,
   "end_distance_m": 700.0,
   "midpoint_distance_m": 690.0,
   "start_elevation_m": 383.5879506059466,
   "end_elevation_m": 387.1349252802312,
   "start_xy": [
    434770.1731040739,
    4584248.244990745
   ],
   "end_xy": [
    434770.8997636045,
    4584228.436826078
   ]
  },
  "max_25m": {
   "gradient_pct": 17.224061654242178,
   "start_distance_m": 676.0,
   "end_distance_m": 701.0,
   "midpoint_distance_m": 688.5,
   "start_elevation_m": 382.9814196456231,
   "end_elevation_m": 387.2874350591836,
   "start_xy": [
    434770.3876207646,
    4584252.239234426
   ],
   "end_xy": [
    434771.19620590453,
    4584227.481775314
   ]
  },
  "max_50m": {
   "gradient_pct": 16.21428174507355,
   "start_distance_m": 523.0,
   "end_distance_m": 573.0,
   "midpoint_distance_m": 548.0,
   "start_elevation_m": 359.9589617661245,
   "end_elevation_m": 368.0661026386613,
   "start_xy": [
    434760.13903391076,
    4584402.965880656
   ],
   "end_xy": [
    434773.95079951733,
    4584355.098332028
   ]
  },
  "max_100m": {
   "gradient_pct": 15.703206351774384,
   "start_distance_m": 471.0,
   "end_distance_m": 571.0,
   "midpoint_distance_m": 521.0,
   "start_elevation_m": 352.0639548288396,
   "end_elevation_m": 367.767161180614,
   "start_xy": [
    434748.6269522979,
    4584452.387951814
   ],
   "end_xy": [
    434773.62712010724,
    4584357.071966148
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.275758536916555,
   "start_distance_m": 233.0,
   "end_distance_m": 238.0,
   "midpoint_distance_m": 235.5,
   "start_elevation_m": 338.41599684076857,
   "end_elevation_m": 338.00220891392274,
   "start_xy": [
    434782.1420260153,
    4584678.8744907025
   ],
   "end_xy": [
    434779.90436240117,
    4584674.403152922
   ]
  },
  "min_10m": {
   "gradient_pct": -8.018382087611258,
   "start_distance_m": 229.0,
   "end_distance_m": 239.0,
   "midpoint_distance_m": 234.0,
   "start_elevation_m": 338.726579849809,
   "end_elevation_m": 337.9247416410479,
   "start_xy": [
    434783.93215690664,
    4584682.451560928
   ],
   "end_xy": [
    434779.4568296783,
    4584673.508885366
   ]
  },
  "min_20m": {
   "gradient_pct": -7.78332561383678,
   "start_distance_m": 219.0,
   "end_distance_m": 239.0,
   "midpoint_distance_m": 229.0,
   "start_elevation_m": 339.48140676381524,
   "end_elevation_m": 337.9247416410479,
   "start_xy": [
    434788.23284023016,
    4584691.47812712
   ],
   "end_xy": [
    434779.4568296783,
    4584673.508885366
   ]
  },
  "min_25m": {
   "gradient_pct": -7.697042394914433,
   "start_distance_m": 214.0,
   "end_distance_m": 239.0,
   "midpoint_distance_m": 226.5,
   "start_elevation_m": 339.8490022397765,
   "end_elevation_m": 337.9247416410479,
   "start_xy": [
    434790.3245013134,
    4584696.019597577
   ],
   "end_xy": [
    434779.4568296783,
    4584673.508885366
   ]
  },
  "min_50m": {
   "gradient_pct": -7.408823475798954,
   "start_distance_m": 197.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 222.0,
   "start_elevation_m": 341.05770718487844,
   "end_elevation_m": 337.35329544697896,
   "start_xy": [
    434797.4361489963,
    4584711.460597131
   ],
   "end_xy": [
    434775.14767276886,
    4584666.769898567
   ]
  },
  "min_100m": {
   "gradient_pct": -6.159229201367054,
   "start_distance_m": 168.0,
   "end_distance_m": 268.0,
   "midpoint_distance_m": 218.0,
   "start_elevation_m": 342.5720753908855,
   "end_elevation_m": 336.41284618951846,
   "start_xy": [
    434806.9305277959,
    4584738.853876575
   ],
   "end_xy": [
    434764.1444283224,
    4584648.887105557
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 18.560056062787567,
   "start_distance_m": 691.0,
   "end_distance_m": 693.0,
   "midpoint_distance_m": 692.0,
   "start_elevation_m": 385.5235317719768,
   "end_elevation_m": 385.8947328932326,
   "start_xy": [
    434769.58318317437,
    4584237.26082062
   ],
   "end_xy": [
    434769.5407743088,
    4584235.264963185
   ]
  },
  "max_3m": {
   "gradient_pct": 18.565478667803365,
   "start_distance_m": 691.0,
   "end_distance_m": 694.0,
   "midpoint_distance_m": 692.5,
   "start_elevation_m": 385.5235317719768,
   "end_elevation_m": 386.0804961320109,
   "start_xy": [
    434769.58318317437,
    4584237.26082062
   ],
   "end_xy": [
    434769.63328692503,
    4584234.269251673
   ]
  }
 },
 "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_x43y459_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-15T06:52:31+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/pennsylvania-2026-09-07.osm.pbf",
  "osm_snapshot": "2026-09-06T20:21:35Z",
  "run_id": "reline-campaign-260915",
  "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": [
   "x43y459"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_Northcentral_2019_B19: HTTP Error 404: Not Found",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Ransom",
  "county": "Pennsylvania"
 }
}