{
 "ocl_version": "0.1.0",
 "name": "Daroska Road",
 "slug": "daroska-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.016240584051786,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 209.0,
   "end_distance_m": 211.0,
   "start_elevation_m": 227.14484890714965,
   "end_elevation_m": 227.6651737188307,
   "min_gradient_pct": -10.939672009553192,
   "suppressed_max_gradient_pct": 27.080550145265647,
   "suppressed_location_m": [
    147.0,
    149.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.008253405566922,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 208.0,
   "end_distance_m": 211.0,
   "start_elevation_m": 226.91492611666368,
   "end_elevation_m": 227.6651737188307,
   "min_gradient_pct": -10.600569689949188,
   "suppressed_max_gradient_pct": 26.51251141173437,
   "suppressed_location_m": [
    148.0,
    151.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.22961655002962,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 186.0,
   "end_distance_m": 191.0,
   "start_elevation_m": 222.72187641062106,
   "end_elevation_m": 223.83335723812255,
   "min_gradient_pct": -9.74628068217612,
   "suppressed_max_gradient_pct": 25.311234499056923,
   "suppressed_location_m": [
    148.0,
    153.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.795910642834144,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 179.0,
   "end_distance_m": 189.0,
   "start_elevation_m": 221.2337183628607,
   "end_elevation_m": 223.41330942714413,
   "min_gradient_pct": -8.775765466541543,
   "suppressed_max_gradient_pct": 23.936471688886343,
   "suppressed_location_m": [
    148.0,
    158.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.05360927888057,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 175.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 220.4463491493762,
   "end_elevation_m": 224.65707100515232,
   "min_gradient_pct": -6.450757393782283,
   "suppressed_max_gradient_pct": 23.056620485487684,
   "suppressed_location_m": [
    146.0,
    166.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.63278515730292,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 173.0,
   "end_distance_m": 198.0,
   "start_elevation_m": 220.08399257298558,
   "end_elevation_m": 225.2421888623113,
   "min_gradient_pct": -5.383876399276005,
   "suppressed_max_gradient_pct": 22.2329631605146,
   "suppressed_location_m": [
    144.0,
    169.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.94667238066353,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 161.0,
   "end_distance_m": 211.0,
   "start_elevation_m": 217.69183752849892,
   "end_elevation_m": 227.6651737188307,
   "min_gradient_pct": -1.9528921255728733,
   "suppressed_max_gradient_pct": 21.328897944273475,
   "suppressed_location_m": [
    146.0,
    196.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.088976694990606,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 161.0,
   "end_distance_m": 261.0,
   "start_elevation_m": 217.69183752849892,
   "end_elevation_m": 231.78081422348953,
   "min_gradient_pct": 3.380878008597449,
   "suppressed_max_gradient_pct": 20.042128917449872,
   "suppressed_location_m": [
    112.0,
    212.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.459,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 148.0,
  "shape_class": "stepped"
 },
 "length_m": 273.11681195733536,
 "start_elevation_m": 202.57326068041448,
 "end_elevation_m": 231.46260757223396,
 "endpoint_gain_m": 28.889346891819486,
 "overall_gradient_pct": 10.577652354968322,
 "accumulated_ascent_m": 30.738649074645366,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.22961655002962,
   "start_distance_m": 186.0,
   "end_distance_m": 191.0,
   "midpoint_distance_m": 188.5,
   "start_elevation_m": 222.72187641062106,
   "end_elevation_m": 223.83335723812255,
   "start_xy": [
    309971.314624309,
    4800893.042763124
   ],
   "end_xy": [
    309969.0760002258,
    4800888.571906135
   ]
  },
  "max_10m": {
   "gradient_pct": 21.795910642834144,
   "start_distance_m": 179.0,
   "end_distance_m": 189.0,
   "midpoint_distance_m": 184.0,
   "start_elevation_m": 221.2337183628607,
   "end_elevation_m": 223.41330942714413,
   "start_xy": [
    309974.4486980255,
    4800899.301962908
   ],
   "end_xy": [
    309969.9714498591,
    4800890.360248931
   ]
  },
  "max_20m": {
   "gradient_pct": 21.05360927888057,
   "start_distance_m": 175.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 185.0,
   "start_elevation_m": 220.4463491493762,
   "end_elevation_m": 224.65707100515232,
   "start_xy": [
    309976.23959729203,
    4800902.878648499
   ],
   "end_xy": [
    309967.28510095924,
    4800884.995220544
   ]
  },
  "max_25m": {
   "gradient_pct": 20.63278515730292,
   "start_distance_m": 173.0,
   "end_distance_m": 198.0,
   "midpoint_distance_m": 185.5,
   "start_elevation_m": 220.08399257298558,
   "end_elevation_m": 225.2421888623113,
   "start_xy": [
    309977.13504692534,
    4800904.666991294
   ],
   "end_xy": [
    309965.9419265093,
    4800882.312706351
   ]
  },
  "max_50m": {
   "gradient_pct": 19.94667238066353,
   "start_distance_m": 161.0,
   "end_distance_m": 211.0,
   "midpoint_distance_m": 186.0,
   "start_elevation_m": 217.69183752849892,
   "end_elevation_m": 227.6651737188307,
   "start_xy": [
    309982.53344987007,
    4800915.384106994
   ],
   "end_xy": [
    309960.12150389294,
    4800870.68847818
   ]
  },
  "max_100m": {
   "gradient_pct": 14.088976694990606,
   "start_distance_m": 161.0,
   "end_distance_m": 261.0,
   "midpoint_distance_m": 211.0,
   "start_elevation_m": 217.69183752849892,
   "end_elevation_m": 231.78081422348953,
   "start_xy": [
    309982.53344987007,
    4800915.384106994
   ],
   "end_xy": [
    309935.0150845627,
    4800827.542022857
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.74628068217612,
   "start_distance_m": 3.0,
   "end_distance_m": 8.0,
   "midpoint_distance_m": 5.5,
   "start_elevation_m": 202.48685687557742,
   "end_elevation_m": 201.9995428414686,
   "start_xy": [
    310051.5173756795,
    4801057.174764501
   ],
   "end_xy": [
    310050.2513351454,
    4801052.337705336
   ]
  },
  "min_10m": {
   "gradient_pct": -8.775765466541543,
   "start_distance_m": 3.0,
   "end_distance_m": 13.0,
   "midpoint_distance_m": 8.0,
   "start_elevation_m": 202.48685687557742,
   "end_elevation_m": 201.60928032892326,
   "start_xy": [
    310051.5173756795,
    4801057.174764501
   ],
   "end_xy": [
    310048.9852946113,
    4801047.50064617
   ]
  },
  "min_20m": {
   "gradient_pct": -6.450757393782283,
   "start_distance_m": 2.0,
   "end_distance_m": 22.0,
   "midpoint_distance_m": 12.0,
   "start_elevation_m": 202.54325871068562,
   "end_elevation_m": 201.25310723192916,
   "start_xy": [
    310051.77058378636,
    4801058.142176334
   ],
   "end_xy": [
    310045.6297377988,
    4801039.216412347
   ]
  },
  "min_25m": {
   "gradient_pct": -5.383876399276005,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 202.57326068041448,
   "end_elevation_m": 201.22729158059548,
   "start_xy": [
    310052.277,
    4801060.077
   ],
   "end_xy": [
    310044.2129630156,
    4801036.572031661
   ]
  },
  "min_50m": {
   "gradient_pct": -1.9528921255728733,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 202.57326068041448,
   "end_elevation_m": 201.59681461762804,
   "start_xy": [
    310052.277,
    4801060.077
   ],
   "end_xy": [
    310032.40650648886,
    4801014.535525942
   ]
  },
  "min_100m": {
   "gradient_pct": 3.380878008597449,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 202.57326068041448,
   "end_elevation_m": 205.95413868901193,
   "start_xy": [
    310052.277,
    4801060.077
   ],
   "end_xy": [
    310009.72808911535,
    4800969.984822871
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.016240584051786,
   "start_distance_m": 209.0,
   "end_distance_m": 211.0,
   "midpoint_distance_m": 210.0,
   "start_elevation_m": 227.14484890714965,
   "end_elevation_m": 227.6651737188307,
   "start_xy": [
    309961.01695352624,
    4800872.476820976
   ],
   "end_xy": [
    309960.12150389294,
    4800870.68847818
   ]
  },
  "max_3m": {
   "gradient_pct": 25.008253405566922,
   "start_distance_m": 208.0,
   "end_distance_m": 211.0,
   "midpoint_distance_m": 209.5,
   "start_elevation_m": 226.91492611666368,
   "end_elevation_m": 227.6651737188307,
   "start_xy": [
    309961.46467834286,
    4800873.370992374
   ],
   "end_xy": [
    309960.12150389294,
    4800870.68847818
   ]
  }
 },
 "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": {
  "no_bench_suppression": {
   "masked_fraction": 0.113,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.735,
   "obstruction_max_height_m": 31.59,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    130.0,
    160.0
   ]
  ],
  "review": [],
  "extent": [
   "descends_at_start"
  ]
 },
 "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:26919",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/nh/USGS_1M_19_x30y481_NH_Coastal_2019_B19.tif",
   "data/cache/usa/nh/USGS_1M_19_x31y481_NH_Coastal_2019_B19.tif"
  ],
  "calculated_at": "2026-09-05T00:05:06+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-hampshire-260822.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "run_id": "hunt-wave2-260905",
  "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, NH_Coastal_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x30y481",
   "x31y481"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NH_Coastal_2_2019",
   "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": "Pittsfield",
  "county": "New Hampshire"
 }
}