{
 "ocl_version": "0.1.0",
 "name": "Lena Way",
 "slug": "lena-way",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 44.491368002312015,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1047.0,
   "end_distance_m": 1049.0,
   "start_elevation_m": 345.5320527130285,
   "end_elevation_m": 346.42188007307476,
   "min_gradient_pct": -4.966873379333947
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 38.483924441216764,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1046.0,
   "end_distance_m": 1049.0,
   "start_elevation_m": 345.26736233983826,
   "end_elevation_m": 346.42188007307476,
   "min_gradient_pct": -4.6656866883514185
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.79220123273467,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1044.0,
   "end_distance_m": 1049.0,
   "start_elevation_m": 344.832270011438,
   "end_elevation_m": 346.42188007307476,
   "min_gradient_pct": -3.9899693665483937
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.545399780983416,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1039.0,
   "end_distance_m": 1049.0,
   "start_elevation_m": 343.7673400949764,
   "end_elevation_m": 346.42188007307476,
   "min_gradient_pct": -3.753425896720728
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.72548142949455,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1029.0,
   "end_distance_m": 1049.0,
   "start_elevation_m": 341.67678378717585,
   "end_elevation_m": 346.42188007307476,
   "min_gradient_pct": -2.9643819869991717
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.88884841334948,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1024.0,
   "end_distance_m": 1049.0,
   "start_elevation_m": 340.6996679697374,
   "end_elevation_m": 346.42188007307476,
   "min_gradient_pct": -2.6083010816100796
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.285459170711533,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1006.0,
   "end_distance_m": 1056.0,
   "start_elevation_m": 337.51311202453275,
   "end_elevation_m": 347.1558416098885,
   "min_gradient_pct": -1.4671872360590896
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.177304017050687,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 972.0,
   "end_distance_m": 1072.0,
   "start_elevation_m": 335.2849744803808,
   "end_elevation_m": 348.4622784974315,
   "min_gradient_pct": 0.8963862496625552
  }
 ],
 "shape": {
  "ascent_concentration": 0.326,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 89.0,
  "shape_class": "sustained"
 },
 "length_m": 1080.000000000175,
 "start_elevation_m": 283.1078568835526,
 "end_elevation_m": 348.5883047309035,
 "endpoint_gain_m": 65.48044784735089,
 "overall_gradient_pct": 6.0630044303092845,
 "accumulated_ascent_m": 66.48322012131729,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.79220123273467,
   "start_distance_m": 1044.0,
   "end_distance_m": 1049.0,
   "midpoint_distance_m": 1046.5,
   "start_elevation_m": 344.832270011438,
   "end_elevation_m": 346.42188007307476,
   "start_xy": [
    584082.1354115724,
    4475493.439347268
   ],
   "end_xy": [
    584086.7398821899,
    4475491.490284415
   ]
  },
  "max_10m": {
   "gradient_pct": 26.545399780983416,
   "start_distance_m": 1039.0,
   "end_distance_m": 1049.0,
   "midpoint_distance_m": 1044.0,
   "start_elevation_m": 343.7673400949764,
   "end_elevation_m": 346.42188007307476,
   "start_xy": [
    584077.5308868575,
    4475495.388282439
   ],
   "end_xy": [
    584086.7398821899,
    4475491.490284415
   ]
  },
  "max_20m": {
   "gradient_pct": 23.72548142949455,
   "start_distance_m": 1029.0,
   "end_distance_m": 1049.0,
   "midpoint_distance_m": 1039.0,
   "start_elevation_m": 341.67678378717585,
   "end_elevation_m": 346.42188007307476,
   "start_xy": [
    584068.3220068616,
    4475499.286554105
   ],
   "end_xy": [
    584086.7398821899,
    4475491.490284415
   ]
  },
  "max_25m": {
   "gradient_pct": 22.88884841334948,
   "start_distance_m": 1024.0,
   "end_distance_m": 1049.0,
   "midpoint_distance_m": 1036.5,
   "start_elevation_m": 340.6996679697374,
   "end_elevation_m": 346.42188007307476,
   "start_xy": [
    584063.7178282643,
    4475501.236307249
   ],
   "end_xy": [
    584086.7398821899,
    4475491.490284415
   ]
  },
  "max_50m": {
   "gradient_pct": 19.285459170711533,
   "start_distance_m": 1006.0,
   "end_distance_m": 1056.0,
   "midpoint_distance_m": 1031.0,
   "start_elevation_m": 337.51311202453275,
   "end_elevation_m": 347.1558416098885,
   "start_xy": [
    584047.141882296,
    4475508.25328437
   ],
   "end_xy": [
    584093.1583518903,
    4475488.698859213
   ]
  },
  "max_100m": {
   "gradient_pct": 13.177304017050687,
   "start_distance_m": 972.0,
   "end_distance_m": 1072.0,
   "midpoint_distance_m": 1022.0,
   "start_elevation_m": 335.2849744803808,
   "end_elevation_m": 348.4622784974315,
   "start_xy": [
    584032.6485926796,
    4475484.0894458825
   ],
   "end_xy": [
    584107.6447818513,
    4475481.905975373
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.9899693665483937,
   "start_distance_m": 297.0,
   "end_distance_m": 302.0,
   "midpoint_distance_m": 299.5,
   "start_elevation_m": 303.5505911295151,
   "end_elevation_m": 303.3510926611877,
   "start_xy": [
    583696.6091225751,
    4474958.348893176
   ],
   "end_xy": [
    583697.2910242706,
    4474963.302175387
   ]
  },
  "min_10m": {
   "gradient_pct": -3.753425896720728,
   "start_distance_m": 297.0,
   "end_distance_m": 307.0,
   "midpoint_distance_m": 302.0,
   "start_elevation_m": 303.5505911295151,
   "end_elevation_m": 303.17524853984304,
   "start_xy": [
    583696.6091225751,
    4474958.348893176
   ],
   "end_xy": [
    583697.9740417204,
    4474968.2553036995
   ]
  },
  "min_20m": {
   "gradient_pct": -2.9643819869991717,
   "start_distance_m": 296.0,
   "end_distance_m": 316.0,
   "midpoint_distance_m": 306.0,
   "start_elevation_m": 303.56804519474207,
   "end_elevation_m": 302.97516879734223,
   "start_xy": [
    583696.4720460426,
    4474957.358332717
   ],
   "end_xy": [
    583699.2020187249,
    4474977.171135311
   ]
  },
  "min_25m": {
   "gradient_pct": -2.6083010816100796,
   "start_distance_m": 291.0,
   "end_distance_m": 316.0,
   "midpoint_distance_m": 303.5,
   "start_elevation_m": 303.62724406774475,
   "end_elevation_m": 302.97516879734223,
   "start_xy": [
    583695.7900094821,
    4474952.405069024
   ],
   "end_xy": [
    583699.2020187249,
    4474977.171135311
   ]
  },
  "min_50m": {
   "gradient_pct": -1.4671872360590896,
   "start_distance_m": 290.0,
   "end_distance_m": 340.0,
   "midpoint_distance_m": 315.0,
   "start_elevation_m": 303.6316458969897,
   "end_elevation_m": 302.89805227896017,
   "start_xy": [
    583695.6530677291,
    4474951.414489923
   ],
   "end_xy": [
    583702.4780673549,
    4475000.946487217
   ]
  },
  "min_100m": {
   "gradient_pct": 0.8963862496625552,
   "start_distance_m": 265.0,
   "end_distance_m": 365.0,
   "midpoint_distance_m": 315.0,
   "start_elevation_m": 302.65436142724883,
   "end_elevation_m": 303.5507476769114,
   "start_xy": [
    583691.8611048857,
    4474926.7066192655
   ],
   "end_xy": [
    583705.8910574199,
    4475025.712418406
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 44.491368002312015,
   "start_distance_m": 1047.0,
   "end_distance_m": 1049.0,
   "midpoint_distance_m": 1048.0,
   "start_elevation_m": 345.5320527130285,
   "end_elevation_m": 346.42188007307476,
   "start_xy": [
    584084.8979531397,
    4475492.269576795
   ],
   "end_xy": [
    584086.7398821899,
    4475491.490284415
   ]
  },
  "max_3m": {
   "gradient_pct": 38.483924441216764,
   "start_distance_m": 1046.0,
   "end_distance_m": 1049.0,
   "midpoint_distance_m": 1047.5,
   "start_elevation_m": 345.26736233983826,
   "end_elevation_m": 346.42188007307476,
   "start_xy": [
    584083.9769944838,
    4475492.659236863
   ],
   "end_xy": [
    584086.7398821899,
    4475491.490284415
   ]
  }
 },
 "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_x58y448_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-15T03:28:00+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/pennsylvania-2026-09-07.osm.pbf",
  "osm_snapshot": "2026-09-06T20:21:35Z",
  "run_id": "retro-260914",
  "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": [
   "x58y448"
  ],
  "route_cut_m": 1080.0,
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_WesternPA_2019_D20: HTTP Error 404: Not Found",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Pittsburgh",
  "county": "Pennsylvania"
 }
}