{
 "ocl_version": "0.1.0",
 "name": "2nd Street",
 "slug": "2nd-street-7",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.403983109123374,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 212.0,
   "end_distance_m": 214.0,
   "start_elevation_m": 254.89791285329397,
   "end_elevation_m": 255.40599251547644,
   "min_gradient_pct": -11.371802925128804
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.25429811540884,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 187.0,
   "end_distance_m": 190.0,
   "start_elevation_m": 248.79402797300853,
   "end_elevation_m": 249.5516569164708,
   "min_gradient_pct": -11.249262706648247
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.13799805218241,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 187.0,
   "end_distance_m": 192.0,
   "start_elevation_m": 248.79402797300853,
   "end_elevation_m": 250.05092787561765,
   "min_gradient_pct": -11.126186176953752
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.988432404643106,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 181.0,
   "end_distance_m": 191.0,
   "start_elevation_m": 247.30339245912063,
   "end_elevation_m": 249.80223569958494,
   "min_gradient_pct": -10.42517156830911
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.643111742407342,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 181.0,
   "end_distance_m": 201.0,
   "start_elevation_m": 247.30339245912063,
   "end_elevation_m": 252.2320148076021,
   "min_gradient_pct": -8.924368493130146
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.53347056390578,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 181.0,
   "end_distance_m": 206.0,
   "start_elevation_m": 247.30339245912063,
   "end_elevation_m": 253.43676010009708,
   "min_gradient_pct": -8.274654426675852
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.601799113820675,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 176.0,
   "end_distance_m": 226.0,
   "start_elevation_m": 246.3004986131594,
   "end_elevation_m": 257.60139817006973,
   "min_gradient_pct": -4.642744633199754
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.55267196076636,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 180.0,
   "end_distance_m": 280.0,
   "start_elevation_m": 247.07163793023517,
   "end_elevation_m": 268.62430989100153,
   "min_gradient_pct": 3.4662125760104914
  }
 ],
 "shape": {
  "ascent_concentration": 0.483,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 142.0,
  "shape_class": "stepped"
 },
 "length_m": 432.2590774526777,
 "start_elevation_m": 233.26499881045342,
 "end_elevation_m": 278.825215708487,
 "endpoint_gain_m": 45.56021689803359,
 "overall_gradient_pct": 10.5400254788221,
 "accumulated_ascent_m": 48.08119472556257,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.13799805218241,
   "start_distance_m": 187.0,
   "end_distance_m": 192.0,
   "midpoint_distance_m": 189.5,
   "start_elevation_m": 248.79402797300853,
   "end_elevation_m": 250.05092787561765,
   "start_xy": [
    594058.4505714336,
    4443262.432494345
   ],
   "end_xy": [
    594054.3845085715,
    4443259.522660535
   ]
  },
  "max_10m": {
   "gradient_pct": 24.988432404643106,
   "start_distance_m": 181.0,
   "end_distance_m": 191.0,
   "midpoint_distance_m": 186.0,
   "start_elevation_m": 247.30339245912063,
   "end_elevation_m": 249.80223569958494,
   "start_xy": [
    594063.3298468682,
    4443265.924294917
   ],
   "end_xy": [
    594055.197721144,
    4443260.104627297
   ]
  },
  "max_20m": {
   "gradient_pct": 24.643111742407342,
   "start_distance_m": 181.0,
   "end_distance_m": 201.0,
   "midpoint_distance_m": 191.0,
   "start_elevation_m": 247.30339245912063,
   "end_elevation_m": 252.2320148076021,
   "start_xy": [
    594063.3298468682,
    4443265.924294917
   ],
   "end_xy": [
    594047.0655954197,
    4443254.284959678
   ]
  },
  "max_25m": {
   "gradient_pct": 24.53347056390578,
   "start_distance_m": 181.0,
   "end_distance_m": 206.0,
   "midpoint_distance_m": 193.5,
   "start_elevation_m": 247.30339245912063,
   "end_elevation_m": 253.43676010009708,
   "start_xy": [
    594063.3298468682,
    4443265.924294917
   ],
   "end_xy": [
    594042.9995325576,
    4443251.375125867
   ]
  },
  "max_50m": {
   "gradient_pct": 22.601799113820675,
   "start_distance_m": 176.0,
   "end_distance_m": 226.0,
   "midpoint_distance_m": 201.0,
   "start_elevation_m": 246.3004986131594,
   "end_elevation_m": 257.60139817006973,
   "start_xy": [
    594067.3959097303,
    4443268.834128727
   ],
   "end_xy": [
    594026.7343939128,
    4443239.7370309485
   ]
  },
  "max_100m": {
   "gradient_pct": 21.55267196076636,
   "start_distance_m": 180.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 230.0,
   "start_elevation_m": 247.07163793023517,
   "end_elevation_m": 268.62430989100153,
   "start_xy": [
    594064.1430594407,
    4443266.506261678
   ],
   "end_xy": [
    593982.8063455953,
    4443208.3311943915
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.126186176953752,
   "start_distance_m": 417.0,
   "end_distance_m": 422.0,
   "midpoint_distance_m": 419.5,
   "start_elevation_m": 279.9407599361383,
   "end_elevation_m": 279.3844506272906,
   "start_xy": [
    593871.3779055732,
    4443128.627399533
   ],
   "end_xy": [
    593867.314453634,
    4443125.713920799
   ]
  },
  "min_10m": {
   "gradient_pct": -10.42517156830911,
   "start_distance_m": 415.0,
   "end_distance_m": 425.0,
   "midpoint_distance_m": 420.0,
   "start_elevation_m": 280.1166491291481,
   "end_elevation_m": 279.07413197231716,
   "start_xy": [
    593873.0032863489,
    4443129.792791028
   ],
   "end_xy": [
    593864.8763824704,
    4443123.965833558
   ]
  },
  "min_20m": {
   "gradient_pct": -8.924368493130146,
   "start_distance_m": 406.0,
   "end_distance_m": 426.0,
   "midpoint_distance_m": 416.0,
   "start_elevation_m": 280.7773855165466,
   "end_elevation_m": 278.99251181792056,
   "start_xy": [
    593880.3174998396,
    4443135.03705275
   ],
   "end_xy": [
    593864.0636920825,
    4443123.383137811
   ]
  },
  "min_25m": {
   "gradient_pct": -8.274654426675852,
   "start_distance_m": 403.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 415.5,
   "start_elevation_m": 280.94727695304084,
   "end_elevation_m": 278.8786133463719,
   "start_xy": [
    593882.7555710031,
    4443136.78513999
   ],
   "end_xy": [
    593862.4383113069,
    4443122.217746317
   ]
  },
  "min_50m": {
   "gradient_pct": -4.642744633199754,
   "start_distance_m": 382.0,
   "end_distance_m": 432.0,
   "midpoint_distance_m": 407.0,
   "start_elevation_m": 281.14929544703756,
   "end_elevation_m": 278.8279231304377,
   "start_xy": [
    593899.8235364306,
    4443149.019701234
   ],
   "end_xy": [
    593859.1875497554,
    4443119.886963329
   ]
  },
  "min_100m": {
   "gradient_pct": 3.4662125760104914,
   "start_distance_m": 332.0,
   "end_distance_m": 432.0,
   "midpoint_distance_m": 382.0,
   "start_elevation_m": 275.3617105544272,
   "end_elevation_m": 278.8279231304377,
   "start_xy": [
    593940.5013593982,
    4443178.093997054
   ],
   "end_xy": [
    593859.1875497554,
    4443119.886963329
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.403983109123374,
   "start_distance_m": 212.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 213.0,
   "start_elevation_m": 254.89791285329397,
   "end_elevation_m": 255.40599251547644,
   "start_xy": [
    594038.120257123,
    4443247.8833252955
   ],
   "end_xy": [
    594036.4938319782,
    4443246.719391772
   ]
  },
  "max_3m": {
   "gradient_pct": 25.25429811540884,
   "start_distance_m": 187.0,
   "end_distance_m": 190.0,
   "midpoint_distance_m": 188.5,
   "start_elevation_m": 248.79402797300853,
   "end_elevation_m": 249.5516569164708,
   "start_xy": [
    594058.4505714336,
    4443262.432494345
   ],
   "end_xy": [
    594056.0109337164,
    4443260.686594059
   ]
  }
 },
 "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_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_x59y445_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T15:21:52+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": [
   "x59y445"
  ],
  "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": "Charleroi",
  "county": "Pennsylvania"
 }
}