{
 "ocl_version": "0.1.0",
 "name": "Sweitz Road",
 "slug": "sweitz-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.84189889147501,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 844.0,
   "end_distance_m": 846.0,
   "start_elevation_m": 174.605337921459,
   "end_elevation_m": 175.1021758992885,
   "min_gradient_pct": -20.377289715504787
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.52297945805905,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 843.0,
   "end_distance_m": 846.0,
   "start_elevation_m": 174.36648651554674,
   "end_elevation_m": 175.1021758992885,
   "min_gradient_pct": -20.32632602578038
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.180352910664737,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 842.0,
   "end_distance_m": 847.0,
   "start_elevation_m": 174.12427848996222,
   "end_elevation_m": 175.33329613549546,
   "min_gradient_pct": -20.267092914816658
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.61000269507997,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 836.0,
   "end_distance_m": 846.0,
   "start_elevation_m": 172.7411756297805,
   "end_elevation_m": 175.1021758992885,
   "min_gradient_pct": -20.038381122440114
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.740837233864255,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 834.0,
   "end_distance_m": 854.0,
   "start_elevation_m": 172.30927510533573,
   "end_elevation_m": 176.85744255210858,
   "min_gradient_pct": -19.639532172375596
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.265879967495493,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 833.0,
   "end_distance_m": 858.0,
   "start_elevation_m": 172.1051375385681,
   "end_elevation_m": 177.67160753044197,
   "min_gradient_pct": -19.546947043795058
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.269546616833622,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 825.0,
   "end_distance_m": 875.0,
   "start_elevation_m": 170.60634020200968,
   "end_elevation_m": 180.7411135104265,
   "min_gradient_pct": -19.11697244658876
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.53829687579372,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 825.0,
   "end_distance_m": 925.0,
   "start_elevation_m": 170.60634020200968,
   "end_elevation_m": 189.1446370778034,
   "min_gradient_pct": -17.979362907871007
  }
 ],
 "shape": {
  "ascent_concentration": 0.562,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 266.0,
  "shape_class": "stepped"
 },
 "length_m": 2032.6270845025804,
 "start_elevation_m": 144.074221770249,
 "end_elevation_m": 237.64015215503107,
 "endpoint_gain_m": 93.56593038478206,
 "overall_gradient_pct": 4.603201989098718,
 "accumulated_ascent_m": 129.63528299099332,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.180352910664737,
   "start_distance_m": 842.0,
   "end_distance_m": 847.0,
   "midpoint_distance_m": 844.5,
   "start_elevation_m": 174.12427848996222,
   "end_elevation_m": 175.33329613549546,
   "start_xy": [
    432272.082842147,
    4501443.310322829
   ],
   "end_xy": [
    432274.6958590921,
    4501439.047443233
   ]
  },
  "max_10m": {
   "gradient_pct": 23.61000269507997,
   "start_distance_m": 836.0,
   "end_distance_m": 846.0,
   "midpoint_distance_m": 841.0,
   "start_elevation_m": 172.7411756297805,
   "end_elevation_m": 175.1021758992885,
   "start_xy": [
    432268.9472218128,
    4501448.425778343
   ],
   "end_xy": [
    432274.17325570306,
    4501439.900019152
   ]
  },
  "max_20m": {
   "gradient_pct": 22.740837233864255,
   "start_distance_m": 834.0,
   "end_distance_m": 854.0,
   "midpoint_distance_m": 844.0,
   "start_elevation_m": 172.30927510533573,
   "end_elevation_m": 176.85744255210858,
   "start_xy": [
    432267.9020150347,
    4501450.130930182
   ],
   "end_xy": [
    432278.60938886815,
    4501433.254300612
   ]
  },
  "max_25m": {
   "gradient_pct": 22.265879967495493,
   "start_distance_m": 833.0,
   "end_distance_m": 858.0,
   "midpoint_distance_m": 845.5,
   "start_elevation_m": 172.1051375385681,
   "end_elevation_m": 177.67160753044197,
   "start_xy": [
    432267.3794116457,
    4501450.9835061
   ],
   "end_xy": [
    432281.0342595225,
    4501430.073105505
   ]
  },
  "max_50m": {
   "gradient_pct": 20.269546616833622,
   "start_distance_m": 825.0,
   "end_distance_m": 875.0,
   "midpoint_distance_m": 850.0,
   "start_elevation_m": 170.60634020200968,
   "end_elevation_m": 180.7411135104265,
   "start_xy": [
    432263.21405031555,
    4501457.813354229
   ],
   "end_xy": [
    432291.3399598033,
    4501416.553026299
   ]
  },
  "max_100m": {
   "gradient_pct": 18.53829687579372,
   "start_distance_m": 825.0,
   "end_distance_m": 925.0,
   "midpoint_distance_m": 875.0,
   "start_elevation_m": 170.60634020200968,
   "end_elevation_m": 189.1446370778034,
   "start_xy": [
    432263.21405031555,
    4501457.813354229
   ],
   "end_xy": [
    432326.72008441127,
    4501381.387251161
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -20.267092914816658,
   "start_distance_m": 1345.0,
   "end_distance_m": 1350.0,
   "midpoint_distance_m": 1347.5,
   "start_elevation_m": 227.35236155015016,
   "end_elevation_m": 226.33900690440933,
   "start_xy": [
    432586.30216374266,
    4501070.687642389
   ],
   "end_xy": [
    432589.0180391634,
    4501066.489545117
   ]
  },
  "min_10m": {
   "gradient_pct": -20.038381122440114,
   "start_distance_m": 1344.0,
   "end_distance_m": 1354.0,
   "midpoint_distance_m": 1349.0,
   "start_elevation_m": 227.55427461311336,
   "end_elevation_m": 225.55043650086935,
   "start_xy": [
    432585.75898865855,
    4501071.527261843
   ],
   "end_xy": [
    432591.1907394999,
    4501063.1310673
   ]
  },
  "min_20m": {
   "gradient_pct": -19.639532172375596,
   "start_distance_m": 1339.0,
   "end_distance_m": 1359.0,
   "midpoint_distance_m": 1349.0,
   "start_elevation_m": 228.5112261547688,
   "end_elevation_m": 224.58331972029367,
   "start_xy": [
    432583.0431132378,
    4501075.725359115
   ],
   "end_xy": [
    432593.90661492065,
    4501058.932970029
   ]
  },
  "min_25m": {
   "gradient_pct": -19.546947043795058,
   "start_distance_m": 1334.0,
   "end_distance_m": 1359.0,
   "midpoint_distance_m": 1346.5,
   "start_elevation_m": 229.47005648124244,
   "end_elevation_m": 224.58331972029367,
   "start_xy": [
    432580.32723781717,
    4501079.923456386
   ],
   "end_xy": [
    432593.90661492065,
    4501058.932970029
   ]
  },
  "min_50m": {
   "gradient_pct": -19.11697244658876,
   "start_distance_m": 1332.0,
   "end_distance_m": 1382.0,
   "midpoint_distance_m": 1357.0,
   "start_elevation_m": 229.83908107613098,
   "end_elevation_m": 220.2805948528366,
   "start_xy": [
    432579.2408876489,
    4501081.602695295
   ],
   "end_xy": [
    432606.39964185585,
    4501039.621722581
   ]
  },
  "min_100m": {
   "gradient_pct": -17.979362907871007,
   "start_distance_m": 1300.0,
   "end_distance_m": 1400.0,
   "midpoint_distance_m": 1350.0,
   "start_elevation_m": 235.337578621833,
   "end_elevation_m": 217.35821571396198,
   "start_xy": [
    432561.8592849564,
    4501108.470517831
   ],
   "end_xy": [
    432616.17679337034,
    4501024.508572404
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.84189889147501,
   "start_distance_m": 844.0,
   "end_distance_m": 846.0,
   "midpoint_distance_m": 845.0,
   "start_elevation_m": 174.605337921459,
   "end_elevation_m": 175.1021758992885,
   "start_xy": [
    432273.128048925,
    4501441.60517099
   ],
   "end_xy": [
    432274.17325570306,
    4501439.900019152
   ]
  },
  "max_3m": {
   "gradient_pct": 24.52297945805905,
   "start_distance_m": 843.0,
   "end_distance_m": 846.0,
   "midpoint_distance_m": 844.5,
   "start_elevation_m": 174.36648651554674,
   "end_elevation_m": 175.1021758992885,
   "start_xy": [
    432272.60544553597,
    4501442.45774691
   ],
   "end_xy": [
    432274.17325570306,
    4501439.900019152
   ]
  }
 },
 "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_1M_18_x43y451_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-07T23:49:07+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.osm.pbf",
  "osm_snapshot": "2026-09-06T20:21:35Z",
  "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": [
   "x43y451"
  ],
  "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": "Lynn",
  "county": "Pennsylvania"
 },
 "review_flags": [
  {
   "kind": "possible-bridge-or-hollow",
   "span_m": [
    684.0,
    852.0
   ],
   "status": "pending-human-review",
   "noted": "2026-09-21",
   "figure_adjusted": false
  }
 ]
}