{
 "ocl_version": "0.1.0",
 "name": "Helen Street",
 "slug": "helen-street-2-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.015756022657797,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 193.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 335.55691524893626,
   "end_elevation_m": 336.0372303693894,
   "min_gradient_pct": 0.11815992923231988
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.736514152650063,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 192.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 335.3251349448099,
   "end_elevation_m": 336.0372303693894,
   "min_gradient_pct": 0.6520704406341338
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.309687379105526,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 191.0,
   "end_distance_m": 196.0,
   "start_elevation_m": 335.0950029904301,
   "end_elevation_m": 336.26048735938537,
   "min_gradient_pct": 1.5858555893646553
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.619597318505953,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 189.0,
   "end_distance_m": 199.0,
   "start_elevation_m": 334.66530786348375,
   "end_elevation_m": 336.92726759533434,
   "min_gradient_pct": 3.2613258903899123
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.416569055822094,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 179.0,
   "end_distance_m": 199.0,
   "start_elevation_m": 332.6439537841699,
   "end_elevation_m": 336.92726759533434,
   "min_gradient_pct": 5.308713801018428
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.052662334503566,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 175.0,
   "end_distance_m": 200.0,
   "start_elevation_m": 331.8660792662115,
   "end_elevation_m": 337.1292448498374,
   "min_gradient_pct": 5.359205145043688
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.740773675924743,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 150.0,
   "end_distance_m": 200.0,
   "start_elevation_m": 327.258858011875,
   "end_elevation_m": 337.1292448498374,
   "min_gradient_pct": 5.602771695612205
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.34217071289703,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 100.0,
   "end_distance_m": 200.0,
   "start_elevation_m": 321.78707413694036,
   "end_elevation_m": 337.1292448498374,
   "min_gradient_pct": 6.111066444073629
  }
 ],
 "shape": {
  "ascent_concentration": 0.46,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 81.0,
  "shape_class": "stepped"
 },
 "length_m": 200.95925071203297,
 "start_elevation_m": 315.67600769286673,
 "end_elevation_m": 337.30802336123844,
 "endpoint_gain_m": 21.632015668371707,
 "overall_gradient_pct": 10.764379142401147,
 "accumulated_ascent_m": 21.632587993305208,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.309687379105526,
   "start_distance_m": 191.0,
   "end_distance_m": 196.0,
   "midpoint_distance_m": 193.5,
   "start_elevation_m": 335.0950029904301,
   "end_elevation_m": 336.26048735938537,
   "start_xy": [
    718046.438891552,
    4474887.956146916
   ],
   "end_xy": [
    718044.9282901831,
    4474892.722495992
   ]
  },
  "max_10m": {
   "gradient_pct": 22.619597318505953,
   "start_distance_m": 189.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 194.0,
   "start_elevation_m": 334.66530786348375,
   "end_elevation_m": 336.92726759533434,
   "start_xy": [
    718047.0431320997,
    4474886.049607286
   ],
   "end_xy": [
    718044.0219293616,
    4474895.582305436
   ]
  },
  "max_20m": {
   "gradient_pct": 21.416569055822094,
   "start_distance_m": 179.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 189.0,
   "start_elevation_m": 332.6439537841699,
   "end_elevation_m": 336.92726759533434,
   "start_xy": [
    718050.0643348376,
    4474876.516909136
   ],
   "end_xy": [
    718044.0219293616,
    4474895.582305436
   ]
  },
  "max_25m": {
   "gradient_pct": 21.052662334503566,
   "start_distance_m": 175.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 187.5,
   "start_elevation_m": 331.8660792662115,
   "end_elevation_m": 337.1292448498374,
   "start_xy": [
    718051.2728159329,
    4474872.703829877
   ],
   "end_xy": [
    718043.7198090878,
    4474896.535575251
   ]
  },
  "max_50m": {
   "gradient_pct": 19.740773675924743,
   "start_distance_m": 150.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 175.0,
   "start_elevation_m": 327.258858011875,
   "end_elevation_m": 337.1292448498374,
   "start_xy": [
    718058.8258227778,
    4474848.872084502
   ],
   "end_xy": [
    718043.7198090878,
    4474896.535575251
   ]
  },
  "max_100m": {
   "gradient_pct": 15.34217071289703,
   "start_distance_m": 100.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 150.0,
   "start_elevation_m": 321.78707413694036,
   "end_elevation_m": 337.1292448498374,
   "start_xy": [
    718071.3522732911,
    4474800.488189401
   ],
   "end_xy": [
    718043.7198090878,
    4474896.535575251
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.5858555893646553,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 315.67600769286673,
   "end_elevation_m": 315.75530047233497,
   "start_xy": [
    718077.435,
    4474701.164
   ],
   "end_xy": [
    718077.4063892002,
    4474706.163918141
   ]
  },
  "min_10m": {
   "gradient_pct": 3.2613258903899123,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 315.67600769286673,
   "end_elevation_m": 316.0021402819057,
   "start_xy": [
    718077.435,
    4474701.164
   ],
   "end_xy": [
    718077.3777784004,
    4474711.163836283
   ]
  },
  "min_20m": {
   "gradient_pct": 5.308713801018428,
   "start_distance_m": 31.0,
   "end_distance_m": 51.0,
   "midpoint_distance_m": 41.0,
   "start_elevation_m": 317.4705774420988,
   "end_elevation_m": 318.53232020230246,
   "start_xy": [
    718077.2576130411,
    4474732.1634924775
   ],
   "end_xy": [
    718077.1431698418,
    4474752.163165044
   ]
  },
  "min_25m": {
   "gradient_pct": 5.359205145043688,
   "start_distance_m": 30.0,
   "end_distance_m": 55.0,
   "midpoint_distance_m": 42.5,
   "start_elevation_m": 317.41541103217685,
   "end_elevation_m": 318.75521231843777,
   "start_xy": [
    718077.2633352011,
    4474731.163508849
   ],
   "end_xy": [
    718077.120281202,
    4474756.163099557
   ]
  },
  "min_50m": {
   "gradient_pct": 5.602771695612205,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 315.67600769286673,
   "end_elevation_m": 318.47739354067284,
   "start_xy": [
    718077.435,
    4474701.164
   ],
   "end_xy": [
    718077.1488920018,
    4474751.163181416
   ]
  },
  "min_100m": {
   "gradient_pct": 6.111066444073629,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 315.67600769286673,
   "end_elevation_m": 321.78707413694036,
   "start_xy": [
    718077.435,
    4474701.164
   ],
   "end_xy": [
    718071.3522732911,
    4474800.488189401
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.015756022657797,
   "start_distance_m": 193.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 194.0,
   "start_elevation_m": 335.55691524893626,
   "end_elevation_m": 336.0372303693894,
   "start_xy": [
    718045.8346510044,
    4474889.8626865465
   ],
   "end_xy": [
    718045.2304104568,
    4474891.769226177
   ]
  },
  "max_3m": {
   "gradient_pct": 23.736514152650063,
   "start_distance_m": 192.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 193.5,
   "start_elevation_m": 335.3251349448099,
   "end_elevation_m": 336.0372303693894,
   "start_xy": [
    718046.1367712782,
    4474888.909416731
   ],
   "end_xy": [
    718045.2304104568,
    4474891.769226177
   ]
  }
 },
 "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_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_x71y448_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-07T13:00:55+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_Northcentral_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x71y448"
  ],
  "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": "Blair",
  "county": "Pennsylvania"
 }
}