{
 "ocl_version": "0.1.0",
 "name": "Walker Road",
 "slug": "walker-road",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.106010312635817,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 911.0,
   "end_distance_m": 913.0,
   "start_elevation_m": 122.67146729520218,
   "end_elevation_m": 123.1535875014549,
   "min_gradient_pct": 0.44796230303205675
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.809014044877035,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 921.0,
   "end_distance_m": 924.0,
   "start_elevation_m": 124.58801930624546,
   "end_elevation_m": 125.24228972759177,
   "min_gradient_pct": 0.8663599620916784
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.165883661357157,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1290.0,
   "end_distance_m": 1295.0,
   "start_elevation_m": 164.94472701328928,
   "end_elevation_m": 166.00302119635714,
   "min_gradient_pct": 1.9068210858425516
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.342840043271053,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1286.0,
   "end_distance_m": 1296.0,
   "start_elevation_m": 164.1388374798516,
   "end_elevation_m": 166.1731214841787,
   "min_gradient_pct": 2.6998328427988127
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.240969928405264,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1286.0,
   "end_distance_m": 1306.0,
   "start_elevation_m": 164.1388374798516,
   "end_elevation_m": 168.18703146553264,
   "min_gradient_pct": 3.230735329972987
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.017039131279034,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1285.0,
   "end_distance_m": 1310.0,
   "start_elevation_m": 163.98383652981892,
   "end_elevation_m": 168.98809631263867,
   "min_gradient_pct": 3.3642700266482564
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.49343533872411,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1269.0,
   "end_distance_m": 1319.0,
   "start_elevation_m": 161.26503871890515,
   "end_elevation_m": 170.5117563882672,
   "min_gradient_pct": 3.5660302267053368
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.05173032540101,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 888.0,
   "end_distance_m": 988.0,
   "start_elevation_m": 119.7762733067632,
   "end_elevation_m": 134.8280036321642,
   "min_gradient_pct": 4.6450231981832815
  }
 ],
 "shape": {
  "ascent_concentration": 0.313,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 167.0,
  "shape_class": "sustained"
 },
 "length_m": 1352.4417867197121,
 "start_elevation_m": 47.76979589568874,
 "end_elevation_m": 173.9856829643308,
 "endpoint_gain_m": 126.21588706864208,
 "overall_gradient_pct": 9.332445086214996,
 "accumulated_ascent_m": 126.28069419434276,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.165883661357157,
   "start_distance_m": 1290.0,
   "end_distance_m": 1295.0,
   "midpoint_distance_m": 1292.5,
   "start_elevation_m": 164.94472701328928,
   "end_elevation_m": 166.00302119635714,
   "start_xy": [
    562050.9322170803,
    4512997.361801647
   ],
   "end_xy": [
    562045.9410131793,
    4512997.6582533615
   ]
  },
  "max_10m": {
   "gradient_pct": 20.342840043271053,
   "start_distance_m": 1286.0,
   "end_distance_m": 1296.0,
   "midpoint_distance_m": 1291.0,
   "start_elevation_m": 164.1388374798516,
   "end_elevation_m": 166.1731214841787,
   "start_xy": [
    562054.925180201,
    4512997.124640276
   ],
   "end_xy": [
    562044.942772399,
    4512997.717543704
   ]
  },
  "max_20m": {
   "gradient_pct": 20.240969928405264,
   "start_distance_m": 1286.0,
   "end_distance_m": 1306.0,
   "midpoint_distance_m": 1296.0,
   "start_elevation_m": 164.1388374798516,
   "end_elevation_m": 168.18703146553264,
   "start_xy": [
    562054.925180201,
    4512997.124640276
   ],
   "end_xy": [
    562034.9603645972,
    4512998.310447133
   ]
  },
  "max_25m": {
   "gradient_pct": 20.017039131279034,
   "start_distance_m": 1285.0,
   "end_distance_m": 1310.0,
   "midpoint_distance_m": 1297.5,
   "start_elevation_m": 163.98383652981892,
   "end_elevation_m": 168.98809631263867,
   "start_xy": [
    562055.9234209812,
    4512997.065349933
   ],
   "end_xy": [
    562030.9674014763,
    4512998.547608505
   ]
  },
  "max_50m": {
   "gradient_pct": 18.49343533872411,
   "start_distance_m": 1269.0,
   "end_distance_m": 1319.0,
   "midpoint_distance_m": 1294.0,
   "start_elevation_m": 161.26503871890515,
   "end_elevation_m": 170.5117563882672,
   "start_xy": [
    562071.8952734643,
    4512996.116704446
   ],
   "end_xy": [
    562021.9832344546,
    4512999.081221591
   ]
  },
  "max_100m": {
   "gradient_pct": 15.05173032540101,
   "start_distance_m": 888.0,
   "end_distance_m": 988.0,
   "midpoint_distance_m": 938.0,
   "start_elevation_m": 119.7762733067632,
   "end_elevation_m": 134.8280036321642,
   "start_xy": [
    562371.1333571058,
    4513136.312102144
   ],
   "end_xy": [
    562284.507915983,
    4513168.5131336665
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.9068210858425516,
   "start_distance_m": 112.0,
   "end_distance_m": 117.0,
   "midpoint_distance_m": 114.5,
   "start_elevation_m": 54.55478173269128,
   "end_elevation_m": 54.65012278698341,
   "start_xy": [
    563000.9929997578,
    4512751.615010452
   ],
   "end_xy": [
    563002.9340686495,
    4512756.22285719
   ]
  },
  "min_10m": {
   "gradient_pct": 2.6998328427988127,
   "start_distance_m": 75.0,
   "end_distance_m": 85.0,
   "midpoint_distance_m": 80.0,
   "start_elevation_m": 53.256313819496114,
   "end_elevation_m": 53.526297103775995,
   "start_xy": [
    562988.0853057856,
    4512718.1510352995
   ],
   "end_xy": [
    562990.511227742,
    4512726.732638069
   ]
  },
  "min_20m": {
   "gradient_pct": 3.230735329972987,
   "start_distance_m": 75.0,
   "end_distance_m": 95.0,
   "midpoint_distance_m": 85.0,
   "start_elevation_m": 53.256313819496114,
   "end_elevation_m": 53.90246088549071,
   "start_xy": [
    562988.0853057856,
    4512718.1510352995
   ],
   "end_xy": [
    562994.3933655256,
    4512735.948331544
   ]
  },
  "min_25m": {
   "gradient_pct": 3.3642700266482564,
   "start_distance_m": 74.0,
   "end_distance_m": 99.0,
   "midpoint_distance_m": 86.5,
   "start_elevation_m": 53.22160852725846,
   "end_elevation_m": 54.062676033920525,
   "start_xy": [
    562989.0244217084,
    4512717.807434829
   ],
   "end_xy": [
    562995.946220639,
    4512739.634608935
   ]
  },
  "min_50m": {
   "gradient_pct": 3.5660302267053368,
   "start_distance_m": 71.0,
   "end_distance_m": 121.0,
   "midpoint_distance_m": 96.0,
   "start_elevation_m": 53.06417963621434,
   "end_elevation_m": 54.84719474956701,
   "start_xy": [
    562991.841769477,
    4512716.776633416
   ],
   "end_xy": [
    562999.7526927545,
    4512757.817780216
   ]
  },
  "min_100m": {
   "gradient_pct": 4.6450231981832815,
   "start_distance_m": 577.0,
   "end_distance_m": 677.0,
   "midpoint_distance_m": 627.0,
   "start_elevation_m": 96.4876080652426,
   "end_elevation_m": 101.13263126342588,
   "start_xy": [
    562569.391627227,
    4512908.554797129
   ],
   "end_xy": [
    562490.1433617666,
    4512967.097976235
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.106010312635817,
   "start_distance_m": 911.0,
   "end_distance_m": 913.0,
   "midpoint_distance_m": 912.0,
   "start_elevation_m": 122.67146729520218,
   "end_elevation_m": 123.1535875014549,
   "start_xy": [
    562355.3838787491,
    4513152.856211844
   ],
   "end_xy": [
    562353.7154854812,
    4513153.959146068
   ]
  },
  "max_3m": {
   "gradient_pct": 21.809014044877035,
   "start_distance_m": 921.0,
   "end_distance_m": 924.0,
   "midpoint_distance_m": 922.5,
   "start_elevation_m": 124.58801930624546,
   "end_elevation_m": 125.24228972759177,
   "start_xy": [
    562346.8271149099,
    4513158.0056732865
   ],
   "end_xy": [
    562344.1650187521,
    4513159.388873939
   ]
  }
 },
 "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/nj/USGS_one_meter_x56y452_NJ_SdL5_2014.tif"
  ],
  "calculated_at": "2026-09-06T21:15:46+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-jersey-2026-09-06.osm.pbf",
  "osm_snapshot": "2026-09-04T20:21:21Z",
  "run_id": "nj-wave2-260906",
  "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, NJ_SdL5_2014 (collected 2014)",
  "elevation_tile_ids": [
   "x56y452"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "West Orange",
  "county": "New Jersey"
 }
}