{
 "ocl_version": "0.1.0",
 "name": "Ray Road",
 "slug": "ray-road-2",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 42.88571448896619,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 56.0,
   "end_distance_m": 58.0,
   "start_elevation_m": 302.17223677619575,
   "end_elevation_m": 303.02995106597507,
   "min_gradient_pct": -34.093812128827494
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 39.503139480696824,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 55.0,
   "end_distance_m": 58.0,
   "start_elevation_m": 301.84485688155416,
   "end_elevation_m": 303.02995106597507,
   "min_gradient_pct": -32.34548647683937
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.93607618589317,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 55.0,
   "end_distance_m": 60.0,
   "start_elevation_m": 301.84485688155416,
   "end_elevation_m": 303.3916606908488,
   "min_gradient_pct": -28.455662245515896
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.50753663556202,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1463.0,
   "end_distance_m": 1473.0,
   "start_elevation_m": 392.7394365324212,
   "end_elevation_m": 394.8901901959774,
   "min_gradient_pct": -16.663657061347976
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.196626037026363,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1459.0,
   "end_distance_m": 1479.0,
   "start_elevation_m": 391.91554644073824,
   "end_elevation_m": 396.1548716481435,
   "min_gradient_pct": -9.880211769463187
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.029917611406518,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1456.0,
   "end_distance_m": 1481.0,
   "start_elevation_m": 391.29288901627734,
   "end_elevation_m": 396.550368419129,
   "min_gradient_pct": -8.122898882145819
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.93600279942541,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1437.0,
   "end_distance_m": 1487.0,
   "start_elevation_m": 388.11094298665944,
   "end_elevation_m": 397.57894438637214,
   "min_gradient_pct": -4.266040437886318
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.33280095705453,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1382.0,
   "end_distance_m": 1482.0,
   "start_elevation_m": 379.4151709518123,
   "end_elevation_m": 396.7479719088668,
   "min_gradient_pct": -2.858024777169419
  }
 ],
 "shape": {
  "ascent_concentration": 0.457,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 271.0,
  "shape_class": "stepped"
 },
 "length_m": 1494.9999999996387,
 "start_elevation_m": 303.34362032418824,
 "end_elevation_m": 398.1443909256666,
 "endpoint_gain_m": 94.80077060147835,
 "overall_gradient_pct": 6.34118866899674,
 "accumulated_ascent_m": 102.29713859607523,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.93607618589317,
   "start_distance_m": 55.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 57.5,
   "start_elevation_m": 301.84485688155416,
   "end_elevation_m": 303.3916606908488,
   "start_xy": [
    620312.5189413843,
    4501831.677223711
   ],
   "end_xy": [
    620311.561870412,
    4501836.584770466
   ]
  },
  "max_10m": {
   "gradient_pct": 21.50753663556202,
   "start_distance_m": 1463.0,
   "end_distance_m": 1473.0,
   "midpoint_distance_m": 1468.0,
   "start_elevation_m": 392.7394365324212,
   "end_elevation_m": 394.8901901959774,
   "start_xy": [
    620265.153780971,
    4503069.424626932
   ],
   "end_xy": [
    620256.225735943,
    4503073.929070514
   ]
  },
  "max_20m": {
   "gradient_pct": 21.196626037026363,
   "start_distance_m": 1459.0,
   "end_distance_m": 1479.0,
   "midpoint_distance_m": 1469.0,
   "start_elevation_m": 391.91554644073824,
   "end_elevation_m": 396.1548716481435,
   "start_xy": [
    620268.7249989822,
    4503067.6228495
   ],
   "end_xy": [
    620250.9006921062,
    4503076.681572158
   ]
  },
  "max_25m": {
   "gradient_pct": 21.029917611406518,
   "start_distance_m": 1456.0,
   "end_distance_m": 1481.0,
   "midpoint_distance_m": 1468.5,
   "start_elevation_m": 391.29288901627734,
   "end_elevation_m": 396.550368419129,
   "start_xy": [
    620271.4034124906,
    4503066.271516425
   ],
   "end_xy": [
    620249.3307967379,
    4503077.920696257
   ]
  },
  "max_50m": {
   "gradient_pct": 18.93600279942541,
   "start_distance_m": 1437.0,
   "end_distance_m": 1487.0,
   "midpoint_distance_m": 1462.0,
   "start_elevation_m": 388.11094298665944,
   "end_elevation_m": 397.57894438637214,
   "start_xy": [
    620288.3666980438,
    4503057.713073621
   ],
   "end_xy": [
    620244.6211106331,
    4503081.638068554
   ]
  },
  "max_100m": {
   "gradient_pct": 17.33280095705453,
   "start_distance_m": 1382.0,
   "end_distance_m": 1482.0,
   "midpoint_distance_m": 1432.0,
   "start_elevation_m": 379.4151709518123,
   "end_elevation_m": 396.7479719088668,
   "start_xy": [
    620309.4421273054,
    4503014.682327141
   ],
   "end_xy": [
    620248.5458490538,
    4503078.540258306
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -28.455662245515896,
   "start_distance_m": 61.0,
   "end_distance_m": 66.0,
   "midpoint_distance_m": 63.5,
   "start_elevation_m": 303.2826584920944,
   "end_elevation_m": 301.8598753798186,
   "start_xy": [
    620311.3704562176,
    4501837.566279817
   ],
   "end_xy": [
    620310.4133852451,
    4501842.473826572
   ]
  },
  "min_10m": {
   "gradient_pct": -16.663657061347976,
   "start_distance_m": 60.0,
   "end_distance_m": 70.0,
   "midpoint_distance_m": 65.0,
   "start_elevation_m": 303.3916606908488,
   "end_elevation_m": 301.725294984714,
   "start_xy": [
    620311.561870412,
    4501836.584770466
   ],
   "end_xy": [
    620309.7545328251,
    4501846.416477859
   ]
  },
  "min_20m": {
   "gradient_pct": -9.880211769463187,
   "start_distance_m": 3.0,
   "end_distance_m": 23.0,
   "midpoint_distance_m": 13.0,
   "start_elevation_m": 303.4596988415574,
   "end_elevation_m": 301.48365648766475,
   "start_xy": [
    620338.3700309533,
    4501786.774765891
   ],
   "end_xy": [
    620328.016903976,
    4501803.886538499
   ]
  },
  "min_25m": {
   "gradient_pct": -8.122898882145819,
   "start_distance_m": 3.0,
   "end_distance_m": 28.0,
   "midpoint_distance_m": 15.5,
   "start_elevation_m": 303.4596988415574,
   "end_elevation_m": 301.42897412102093,
   "start_xy": [
    620338.3700309533,
    4501786.774765891
   ],
   "end_xy": [
    620325.4286222316,
    4501808.164481651
   ]
  },
  "min_50m": {
   "gradient_pct": -4.266040437886318,
   "start_distance_m": 60.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 85.0,
   "start_elevation_m": 303.3916606908488,
   "end_elevation_m": 301.25864047190566,
   "start_xy": [
    620311.561870412,
    4501836.584770466
   ],
   "end_xy": [
    620305.1236436887,
    4501886.147509381
   ]
  },
  "min_100m": {
   "gradient_pct": -2.858024777169419,
   "start_distance_m": 60.0,
   "end_distance_m": 160.0,
   "midpoint_distance_m": 110.0,
   "start_elevation_m": 303.3916606908488,
   "end_elevation_m": 300.5336359136794,
   "start_xy": [
    620311.561870412,
    4501836.584770466
   ],
   "end_xy": [
    620299.3344710107,
    4501935.811233361
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 42.88571448896619,
   "start_distance_m": 56.0,
   "end_distance_m": 58.0,
   "midpoint_distance_m": 57.0,
   "start_elevation_m": 302.17223677619575,
   "end_elevation_m": 303.02995106597507,
   "start_xy": [
    620312.3275271899,
    4501832.6587330615
   ],
   "end_xy": [
    620311.9446988009,
    4501834.621751764
   ]
  },
  "max_3m": {
   "gradient_pct": 39.503139480696824,
   "start_distance_m": 55.0,
   "end_distance_m": 58.0,
   "midpoint_distance_m": 56.5,
   "start_elevation_m": 301.84485688155416,
   "end_elevation_m": 303.02995106597507,
   "start_xy": [
    620312.5189413843,
    4501831.677223711
   ],
   "end_xy": [
    620311.9446988009,
    4501834.621751764
   ]
  }
 },
 "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": [
   "short_window_divergence"
  ],
  "extent": [
   "descends_at_start",
   "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:26917",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa-west/USGS_1M_17_x62y451_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T17:09:58+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-band2.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_WesternPA_2019_D20 (collected 2020)",
  "elevation_tile_ids": [
   "x62y451"
  ],
  "route_summit_trim_m": 399.3,
  "route_summit_trim_loss_m": 34.6,
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_WesternPA_2019_D20: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Gilpin",
  "county": "Pennsylvania"
 }
}