{
 "ocl_version": "0.1.0",
 "name": "Newport Road",
 "slug": "newport-road-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.059838813988563,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 176.0,
   "end_distance_m": 178.0,
   "start_elevation_m": 343.50044667720977,
   "end_elevation_m": 343.92164345348954,
   "min_gradient_pct": -5.214218550318606
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 20.866778449889505,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 176.0,
   "end_distance_m": 179.0,
   "start_elevation_m": 343.50044667720977,
   "end_elevation_m": 344.12645003070645,
   "min_gradient_pct": -5.304575097867807
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.701000466298183,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 166.0,
   "end_distance_m": 171.0,
   "start_elevation_m": 341.4681922213584,
   "end_elevation_m": 342.5032422446733,
   "min_gradient_pct": -5.0814503777633035
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.42622632585619,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 162.0,
   "end_distance_m": 172.0,
   "start_elevation_m": 340.6644024072478,
   "end_elevation_m": 342.7070250398334,
   "min_gradient_pct": -4.734329971141733
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.244152581439607,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 159.0,
   "end_distance_m": 179.0,
   "start_elevation_m": 340.07761951441853,
   "end_elevation_m": 344.12645003070645,
   "min_gradient_pct": -4.270086935402162
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.131723789249918,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 154.0,
   "end_distance_m": 179.0,
   "start_elevation_m": 339.09351908339397,
   "end_elevation_m": 344.12645003070645,
   "min_gradient_pct": -3.993058762381679
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.305542549246184,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 135.0,
   "end_distance_m": 185.0,
   "start_elevation_m": 335.6023958754539,
   "end_elevation_m": 345.255167150077,
   "min_gradient_pct": -3.136391672482091
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.95911224824033,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 96.0,
   "end_distance_m": 196.0,
   "start_elevation_m": 330.1562272412353,
   "end_elevation_m": 347.1153394894756,
   "min_gradient_pct": -0.8239376810378758
  }
 ],
 "shape": {
  "ascent_concentration": 0.472,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 204.0,
  "shape_class": "stepped"
 },
 "length_m": 341.59050159560496,
 "start_elevation_m": 318.4797680638196,
 "end_elevation_m": 348.5153799340779,
 "endpoint_gain_m": 30.035611870258265,
 "overall_gradient_pct": 8.792870917065544,
 "accumulated_ascent_m": 31.70524591218731,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.701000466298183,
   "start_distance_m": 166.0,
   "end_distance_m": 171.0,
   "midpoint_distance_m": 168.5,
   "start_elevation_m": 341.4681922213584,
   "end_elevation_m": 342.5032422446733,
   "start_xy": [
    596662.1024545629,
    4475782.754760707
   ],
   "end_xy": [
    596664.8591656311,
    4475786.924004682
   ]
  },
  "max_10m": {
   "gradient_pct": 20.42622632585619,
   "start_distance_m": 162.0,
   "end_distance_m": 172.0,
   "midpoint_distance_m": 167.0,
   "start_elevation_m": 340.6644024072478,
   "end_elevation_m": 342.7070250398334,
   "start_xy": [
    596659.8362356632,
    4475779.458664243
   ],
   "end_xy": [
    596665.3772039935,
    4475787.779362067
   ]
  },
  "max_20m": {
   "gradient_pct": 20.244152581439607,
   "start_distance_m": 159.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 169.0,
   "start_elevation_m": 340.07761951441853,
   "end_elevation_m": 344.12645003070645,
   "start_xy": [
    596658.1365714883,
    4475776.986591895
   ],
   "end_xy": [
    596669.00347253,
    4475793.766863758
   ]
  },
  "max_25m": {
   "gradient_pct": 20.131723789249918,
   "start_distance_m": 154.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 166.5,
   "start_elevation_m": 339.09351908339397,
   "end_elevation_m": 344.12645003070645,
   "start_xy": [
    596655.3037978637,
    4475772.866471316
   ],
   "end_xy": [
    596669.00347253,
    4475793.766863758
   ]
  },
  "max_50m": {
   "gradient_pct": 19.305542549246184,
   "start_distance_m": 135.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 160.0,
   "start_elevation_m": 335.6023958754539,
   "end_elevation_m": 345.255167150077,
   "start_xy": [
    596644.5392580897,
    4475757.210013113
   ],
   "end_xy": [
    596672.1117027042,
    4475798.8990080645
   ]
  },
  "max_100m": {
   "gradient_pct": 16.95911224824033,
   "start_distance_m": 96.0,
   "end_distance_m": 196.0,
   "midpoint_distance_m": 146.0,
   "start_elevation_m": 330.1562272412353,
   "end_elevation_m": 347.1153394894756,
   "start_xy": [
    596622.5872926695,
    4475724.9749601
   ],
   "end_xy": [
    596677.8101246902,
    4475808.307939294
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.0814503777633035,
   "start_distance_m": 315.0,
   "end_distance_m": 320.0,
   "midpoint_distance_m": 317.5,
   "start_elevation_m": 349.36385604956536,
   "end_elevation_m": 349.1097835306772,
   "start_xy": [
    596678.8425410329,
    4475907.879368319
   ],
   "end_xy": [
    596678.489932573,
    4475912.866919549
   ]
  },
  "min_10m": {
   "gradient_pct": -4.734329971141733,
   "start_distance_m": 310.0,
   "end_distance_m": 320.0,
   "midpoint_distance_m": 315.0,
   "start_elevation_m": 349.58321652779136,
   "end_elevation_m": 349.1097835306772,
   "start_xy": [
    596679.1951494928,
    4475902.891817089
   ],
   "end_xy": [
    596678.489932573,
    4475912.866919549
   ]
  },
  "min_20m": {
   "gradient_pct": -4.270086935402162,
   "start_distance_m": 304.0,
   "end_distance_m": 324.0,
   "midpoint_distance_m": 314.0,
   "start_elevation_m": 349.8247912035927,
   "end_elevation_m": 348.9707738165123,
   "start_xy": [
    596679.5760878515,
    4475896.904578753
   ],
   "end_xy": [
    596678.2078458051,
    4475916.856960534
   ]
  },
  "min_25m": {
   "gradient_pct": -3.993058762381679,
   "start_distance_m": 303.0,
   "end_distance_m": 328.0,
   "midpoint_distance_m": 315.5,
   "start_elevation_m": 349.8536992519106,
   "end_elevation_m": 348.8554345613152,
   "start_xy": [
    596679.6085991941,
    4475895.905107386
   ],
   "end_xy": [
    596677.9257590371,
    4475920.847001518
   ]
  },
  "min_50m": {
   "gradient_pct": -3.136391672482091,
   "start_distance_m": 291.0,
   "end_distance_m": 341.0,
   "midpoint_distance_m": 316.0,
   "start_elevation_m": 350.0821691173628,
   "end_elevation_m": 348.51397328112176,
   "start_xy": [
    596680.2692644941,
    4475883.928992777
   ],
   "end_xy": [
    596678.8703809334,
    4475933.763203556
   ]
  },
  "min_100m": {
   "gradient_pct": -0.8239376810378758,
   "start_distance_m": 241.0,
   "end_distance_m": 341.0,
   "midpoint_distance_m": 291.0,
   "start_elevation_m": 349.33791096215964,
   "end_elevation_m": 348.51397328112176,
   "start_xy": [
    596701.1218509966,
    4475846.799021593
   ],
   "end_xy": [
    596678.8703809334,
    4475933.763203556
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.059838813988563,
   "start_distance_m": 176.0,
   "end_distance_m": 178.0,
   "midpoint_distance_m": 177.0,
   "start_elevation_m": 343.50044667720977,
   "end_elevation_m": 343.92164345348954,
   "start_xy": [
    596667.4493574429,
    4475791.200791605
   ],
   "end_xy": [
    596668.4854341677,
    4475792.911506373
   ]
  },
  "max_3m": {
   "gradient_pct": 20.866778449889505,
   "start_distance_m": 176.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 177.5,
   "start_elevation_m": 343.50044667720977,
   "end_elevation_m": 344.12645003070645,
   "start_xy": [
    596667.4493574429,
    4475791.200791605
   ],
   "end_xy": [
    596669.00347253,
    4475793.766863758
   ]
  }
 },
 "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",
   "descends_at_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_x59y448_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T12:04:30+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-band1.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": [
   "x59y448"
  ],
  "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": "Forest Hills",
  "county": "Pennsylvania"
 }
}