{
 "ocl_version": "0.1.0",
 "name": "Beach Road",
 "slug": "beach-road-2-3",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.567065085886043,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 222.0,
   "end_distance_m": 224.0,
   "start_elevation_m": 213.58773482482457,
   "end_elevation_m": 214.0990761265423,
   "min_gradient_pct": -2.28046315516508
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.427102319425405,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 222.0,
   "end_distance_m": 225.0,
   "start_elevation_m": 213.58773482482457,
   "end_elevation_m": 214.35054789440733,
   "min_gradient_pct": -1.566681564878536
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.219048030502904,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 220.0,
   "end_distance_m": 225.0,
   "start_elevation_m": 213.08959549288218,
   "end_elevation_m": 214.35054789440733,
   "min_gradient_pct": -0.7087764855782552
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.985660122728177,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 219.0,
   "end_distance_m": 229.0,
   "start_elevation_m": 212.845265655636,
   "end_elevation_m": 215.34383166790883,
   "min_gradient_pct": -0.06043340267979147
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.458551617197912,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 210.0,
   "end_distance_m": 230.0,
   "start_elevation_m": 210.67819929260105,
   "end_elevation_m": 215.56990961604063,
   "min_gradient_pct": 0.34004229603894487
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.200382114296985,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 205.0,
   "end_distance_m": 230.0,
   "start_elevation_m": 209.5198140874664,
   "end_elevation_m": 215.56990961604063,
   "min_gradient_pct": 0.3827589578174866
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.92451989875167,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 190.0,
   "end_distance_m": 240.0,
   "start_elevation_m": 206.56515088407394,
   "end_elevation_m": 217.52741083344978,
   "min_gradient_pct": 0.5801933038823677
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.73958636984861,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 167.0,
   "end_distance_m": 267.0,
   "start_elevation_m": 204.30119326289582,
   "end_elevation_m": 220.04077963274443,
   "min_gradient_pct": 1.5517515452836506
  }
 ],
 "shape": {
  "ascent_concentration": 0.551,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 76.0,
  "shape_class": "stepped"
 },
 "length_m": 502.0000000001045,
 "start_elevation_m": 201.5479290810524,
 "end_elevation_m": 231.8755593161698,
 "endpoint_gain_m": 30.327630235117425,
 "overall_gradient_pct": 6.041360604603808,
 "accumulated_ascent_m": 30.499918718664617,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.219048030502904,
   "start_distance_m": 220.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 222.5,
   "start_elevation_m": 213.08959549288218,
   "end_elevation_m": 214.35054789440733,
   "start_xy": [
    605088.1778736713,
    4583322.179761684
   ],
   "end_xy": [
    605087.7283620868,
    4583327.159514623
   ]
  },
  "max_10m": {
   "gradient_pct": 24.985660122728177,
   "start_distance_m": 219.0,
   "end_distance_m": 229.0,
   "midpoint_distance_m": 224.0,
   "start_elevation_m": 212.845265655636,
   "end_elevation_m": 215.34383166790883,
   "start_xy": [
    605088.2677759882,
    4583321.1838110965
   ],
   "end_xy": [
    605087.2261703279,
    4583331.100340891
   ]
  },
  "max_20m": {
   "gradient_pct": 24.458551617197912,
   "start_distance_m": 210.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 220.0,
   "start_elevation_m": 210.67819929260105,
   "end_elevation_m": 215.56990961604063,
   "start_xy": [
    605087.4960561838,
    4583312.232522428
   ],
   "end_xy": [
    605086.7507166354,
    4583331.98008164
   ]
  },
  "max_25m": {
   "gradient_pct": 24.200382114296985,
   "start_distance_m": 205.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 217.5,
   "start_elevation_m": 209.5198140874664,
   "end_elevation_m": 215.56990961604063,
   "start_xy": [
    605086.96932203,
    4583307.260344723
   ],
   "end_xy": [
    605086.7507166354,
    4583331.98008164
   ]
  },
  "max_50m": {
   "gradient_pct": 21.92451989875167,
   "start_distance_m": 190.0,
   "end_distance_m": 240.0,
   "midpoint_distance_m": 215.0,
   "start_elevation_m": 206.56515088407394,
   "end_elevation_m": 217.52741083344978,
   "start_xy": [
    605083.3541364013,
    4583292.731614414
   ],
   "end_xy": [
    605080.4385377215,
    4583339.295819412
   ]
  },
  "max_100m": {
   "gradient_pct": 15.73958636984861,
   "start_distance_m": 167.0,
   "end_distance_m": 267.0,
   "midpoint_distance_m": 217.0,
   "start_elevation_m": 204.30119326289582,
   "end_elevation_m": 220.04077963274443,
   "start_xy": [
    605071.1651332168,
    4583273.737468851
   ],
   "end_xy": [
    605053.8547804311,
    4583342.920923657
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.7087764855782552,
   "start_distance_m": 2.0,
   "end_distance_m": 7.0,
   "midpoint_distance_m": 4.5,
   "start_elevation_m": 201.59766149241887,
   "end_elevation_m": 201.56222266813995,
   "start_xy": [
    605040.2933859661,
    4583145.586957509
   ],
   "end_xy": [
    605036.5043508813,
    4583148.849351281
   ]
  },
  "min_10m": {
   "gradient_pct": -0.06043340267979147,
   "start_distance_m": 89.0,
   "end_distance_m": 99.0,
   "midpoint_distance_m": 94.0,
   "start_elevation_m": 203.2519735833311,
   "end_elevation_m": 203.24593024306313,
   "start_xy": [
    605018.4693398069,
    4583218.31684689
   ],
   "end_xy": [
    605021.606620799,
    4583227.733889965
   ]
  },
  "min_20m": {
   "gradient_pct": 0.34004229603894487,
   "start_distance_m": 3.0,
   "end_distance_m": 23.0,
   "midpoint_distance_m": 13.0,
   "start_elevation_m": 201.59778895197493,
   "end_elevation_m": 201.66579741118272,
   "start_xy": [
    605039.5355789491,
    4583146.239436263
   ],
   "end_xy": [
    605024.3794386102,
    4583159.289011353
   ]
  },
  "min_25m": {
   "gradient_pct": 0.3827589578174866,
   "start_distance_m": 2.0,
   "end_distance_m": 27.0,
   "midpoint_distance_m": 14.5,
   "start_elevation_m": 201.59766149241887,
   "end_elevation_m": 201.69335123187324,
   "start_xy": [
    605040.2933859661,
    4583145.586957509
   ],
   "end_xy": [
    605021.3482105423,
    4583161.898926371
   ]
  },
  "min_50m": {
   "gradient_pct": 0.5801933038823677,
   "start_distance_m": 84.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 203.2328973262794,
   "end_elevation_m": 203.5229939782206,
   "start_xy": [
    605017.3660600503,
    4583213.440088359
   ],
   "end_xy": [
    605045.6586341062,
    4583252.799023275
   ]
  },
  "min_100m": {
   "gradient_pct": 1.5517515452836506,
   "start_distance_m": 66.0,
   "end_distance_m": 166.0,
   "midpoint_distance_m": 116.0,
   "start_elevation_m": 202.70885999088733,
   "end_elevation_m": 204.26061153617098,
   "start_xy": [
    605012.5764391206,
    4583196.100811227
   ],
   "end_xy": [
    605070.3922090014,
    4583273.1029705
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.567065085886043,
   "start_distance_m": 222.0,
   "end_distance_m": 224.0,
   "midpoint_distance_m": 223.0,
   "start_elevation_m": 213.58773482482457,
   "end_elevation_m": 214.0990761265423,
   "start_xy": [
    605087.9980690375,
    4583324.17166286
   ],
   "end_xy": [
    605087.8182644037,
    4583326.163564036
   ]
  },
  "max_3m": {
   "gradient_pct": 25.427102319425405,
   "start_distance_m": 222.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 223.5,
   "start_elevation_m": 213.58773482482457,
   "end_elevation_m": 214.35054789440733,
   "start_xy": [
    605087.9980690375,
    4583324.17166286
   ],
   "end_xy": [
    605087.7283620868,
    4583327.159514623
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.272,
   "obstruction_max_height_m": 29.4,
   "flagged_windows_m": [
    50,
    100
   ]
  },
  "review": [],
  "extent": []
 },
 "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/ny/USGS_1M_18_x60y459_NY_FEMAR2_Central_2018_D19.tif"
  ],
  "calculated_at": "2026-09-06T17:30:32+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-york-2026-09-06-batch.osm.pbf",
  "osm_snapshot": "2026-09-04T20:21:21Z",
  "run_id": "ny-run3-260906",
  "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, NY_FEMAR2_Central_2018_D19 (collected 2018)",
  "elevation_tile_ids": [
   "x60y459"
  ],
  "route_summit_trim_m": 114.0,
  "route_summit_trim_loss_m": 7.6,
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NY_FEMAR2_Central_B1_2018",
   "ept_crs": "EPSG:3857",
   "station_coverage": 1.0,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Carmel",
  "county": "New York"
 }
}