{
 "ocl_version": "0.1.0",
 "name": "Phillpi Road",
 "slug": "phillpi-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.739809155496005,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 368.0,
   "end_distance_m": 370.0,
   "start_elevation_m": 726.2307141697293,
   "end_elevation_m": 726.6855103528392,
   "min_gradient_pct": -6.111994306888846
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.672975096944963,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 367.0,
   "end_distance_m": 370.0,
   "start_elevation_m": 726.0053210999308,
   "end_elevation_m": 726.6855103528392,
   "min_gradient_pct": -5.9218448561106625
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.61510164235915,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 365.0,
   "end_distance_m": 370.0,
   "start_elevation_m": 725.5547552707212,
   "end_elevation_m": 726.6855103528392,
   "min_gradient_pct": -5.527438921344583
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.370250055962515,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 360.0,
   "end_distance_m": 370.0,
   "start_elevation_m": 724.4484853472429,
   "end_elevation_m": 726.6855103528392,
   "min_gradient_pct": -5.096390188749638
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.35698035407529,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 352.0,
   "end_distance_m": 372.0,
   "start_elevation_m": 722.81062461862,
   "end_elevation_m": 727.082020689435,
   "min_gradient_pct": -4.314102205473773
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.859303052392534,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 348.0,
   "end_distance_m": 373.0,
   "start_elevation_m": 722.0535843911794,
   "end_elevation_m": 727.2684101542775,
   "min_gradient_pct": -4.117067590037095
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.784906803963395,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 327.0,
   "end_distance_m": 377.0,
   "start_elevation_m": 718.5419365033263,
   "end_elevation_m": 727.934389905308,
   "min_gradient_pct": 1.2746683021171066
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.826448558085985,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 291.0,
   "end_distance_m": 391.0,
   "start_elevation_m": 714.6240837424544,
   "end_elevation_m": 729.4505323005404,
   "min_gradient_pct": 3.811396383849342
  }
 ],
 "shape": {
  "ascent_concentration": 0.443,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 88.0,
  "shape_class": "sustained"
 },
 "length_m": 400.77579748516735,
 "start_elevation_m": 697.692986675783,
 "end_elevation_m": 730.1670211865046,
 "endpoint_gain_m": 32.474034510721594,
 "overall_gradient_pct": 8.102793310996644,
 "accumulated_ascent_m": 33.51350908064592,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.61510164235915,
   "start_distance_m": 365.0,
   "end_distance_m": 370.0,
   "midpoint_distance_m": 367.5,
   "start_elevation_m": 725.5547552707212,
   "end_elevation_m": 726.6855103528392,
   "start_xy": [
    669497.4784237582,
    4430210.890857216
   ],
   "end_xy": [
    669501.8443672264,
    4430208.497454627
   ]
  },
  "max_10m": {
   "gradient_pct": 22.370250055962515,
   "start_distance_m": 360.0,
   "end_distance_m": 370.0,
   "midpoint_distance_m": 365.0,
   "start_elevation_m": 724.4484853472429,
   "end_elevation_m": 726.6855103528392,
   "start_xy": [
    669493.6571306827,
    4430214.115406677
   ],
   "end_xy": [
    669501.8443672264,
    4430208.497454627
   ]
  },
  "max_20m": {
   "gradient_pct": 21.35698035407529,
   "start_distance_m": 352.0,
   "end_distance_m": 372.0,
   "midpoint_distance_m": 362.0,
   "start_elevation_m": 722.81062461862,
   "end_elevation_m": 727.082020689435,
   "start_xy": [
    669488.2503886792,
    4430219.992813114
   ],
   "end_xy": [
    669503.7523030422,
    4430207.990708916
   ]
  },
  "max_25m": {
   "gradient_pct": 20.859303052392534,
   "start_distance_m": 348.0,
   "end_distance_m": 373.0,
   "midpoint_distance_m": 360.5,
   "start_elevation_m": 722.0535843911794,
   "end_elevation_m": 727.2684101542775,
   "start_xy": [
    669486.160655681,
    4430223.403533858
   ],
   "end_xy": [
    669504.7439182661,
    4430207.8614833485
   ]
  },
  "max_50m": {
   "gradient_pct": 18.784906803963395,
   "start_distance_m": 327.0,
   "end_distance_m": 377.0,
   "midpoint_distance_m": 352.0,
   "start_elevation_m": 718.5419365033263,
   "end_elevation_m": 727.934389905308,
   "start_xy": [
    669475.214472335,
    4430241.325029
   ],
   "end_xy": [
    669508.7100573127,
    4430207.395773048
   ]
  },
  "max_100m": {
   "gradient_pct": 14.826448558085985,
   "start_distance_m": 291.0,
   "end_distance_m": 391.0,
   "midpoint_distance_m": 341.0,
   "start_elevation_m": 714.6240837424544,
   "end_elevation_m": 729.4505323005404,
   "start_xy": [
    669457.1813995652,
    4430272.480979846
   ],
   "end_xy": [
    669522.4849590503,
    4430209.832573393
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.527438921344583,
   "start_distance_m": 13.0,
   "end_distance_m": 18.0,
   "midpoint_distance_m": 15.5,
   "start_elevation_m": 697.2316124668002,
   "end_elevation_m": 696.955240520733,
   "start_xy": [
    669442.6119624372,
    4430544.9037209
   ],
   "end_xy": [
    669442.7142556822,
    4430539.904767401
   ]
  },
  "min_10m": {
   "gradient_pct": -5.096390188749638,
   "start_distance_m": 12.0,
   "end_distance_m": 22.0,
   "midpoint_distance_m": 17.0,
   "start_elevation_m": 697.276601459981,
   "end_elevation_m": 696.766962441106,
   "start_xy": [
    669442.5915037881,
    4430545.903511601
   ],
   "end_xy": [
    669442.7960902782,
    4430535.905604601
   ]
  },
  "min_20m": {
   "gradient_pct": -4.314102205473773,
   "start_distance_m": 2.0,
   "end_distance_m": 22.0,
   "midpoint_distance_m": 12.0,
   "start_elevation_m": 697.6297828822007,
   "end_elevation_m": 696.766962441106,
   "start_xy": [
    669442.3869172981,
    4430555.901418599
   ],
   "end_xy": [
    669442.7960902782,
    4430535.905604601
   ]
  },
  "min_25m": {
   "gradient_pct": -4.117067590037095,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 697.692986675783,
   "end_elevation_m": 696.6637197782737,
   "start_xy": [
    669442.346,
    4430557.901
   ],
   "end_xy": [
    669442.8574662253,
    4430532.906232501
   ]
  },
  "min_50m": {
   "gradient_pct": 1.2746683021171066,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 697.692986675783,
   "end_elevation_m": 698.3303208268416,
   "start_xy": [
    669442.346,
    4430557.901
   ],
   "end_xy": [
    669443.3689324504,
    4430507.911465003
   ]
  },
  "min_100m": {
   "gradient_pct": 3.811396383849342,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 697.692986675783,
   "end_elevation_m": 701.5043830596323,
   "start_xy": [
    669442.346,
    4430557.901
   ],
   "end_xy": [
    669444.7848852256,
    4430457.932219215
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.739809155496005,
   "start_distance_m": 368.0,
   "end_distance_m": 370.0,
   "midpoint_distance_m": 369.0,
   "start_elevation_m": 726.2307141697293,
   "end_elevation_m": 726.6855103528392,
   "start_xy": [
    669500.0516220272,
    4430209.384057499
   ],
   "end_xy": [
    669501.8443672264,
    4430208.497454627
   ]
  },
  "max_3m": {
   "gradient_pct": 22.672975096944963,
   "start_distance_m": 367.0,
   "end_distance_m": 370.0,
   "midpoint_distance_m": 368.5,
   "start_elevation_m": 726.0053210999308,
   "end_elevation_m": 726.6855103528392,
   "start_xy": [
    669499.1552494277,
    4430209.827358934
   ],
   "end_xy": [
    669501.8443672264,
    4430208.497454627
   ]
  }
 },
 "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": [
   "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_x66y444_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T13:28:22+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": [
   "x66y444"
  ],
  "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": "Somerset",
  "county": "Pennsylvania"
 }
}