{
 "ocl_version": "0.1.0",
 "name": "Picnic Hill Road",
 "slug": "picnic-hill-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 46.75172155172902,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 785.0,
   "end_distance_m": 787.0,
   "start_elevation_m": 294.01966725268437,
   "end_elevation_m": 294.95470168371895,
   "min_gradient_pct": -51.81991893276745
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 42.51513283105434,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 375.0,
   "end_distance_m": 378.0,
   "start_elevation_m": 228.63522779714867,
   "end_elevation_m": 229.9106817820803,
   "min_gradient_pct": -46.106586625840386,
   "suppressed_max_gradient_pct": 44.04800394067081,
   "suppressed_location_m": [
    229.0,
    232.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 38.20691546373325,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 374.0,
   "end_distance_m": 379.0,
   "start_elevation_m": 228.3344942838107,
   "end_elevation_m": 230.24484005699736,
   "min_gradient_pct": -36.343561441360634,
   "suppressed_max_gradient_pct": 43.01820131739703,
   "suppressed_location_m": [
    227.0,
    232.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 32.319823974195856,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 375.0,
   "end_distance_m": 385.0,
   "start_elevation_m": 228.63522779714867,
   "end_elevation_m": 231.86721019456826,
   "min_gradient_pct": -28.95290813560223,
   "suppressed_max_gradient_pct": 38.29974280194165,
   "suppressed_location_m": [
    223.0,
    233.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 28.15421767330946,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 373.0,
   "end_distance_m": 393.0,
   "start_elevation_m": 228.08532700126386,
   "end_elevation_m": 233.71617053592576,
   "min_gradient_pct": -19.42166567158793,
   "suppressed_max_gradient_pct": 33.953741347779385,
   "suppressed_location_m": [
    224.0,
    244.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 27.18682885223791,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 374.0,
   "end_distance_m": 399.0,
   "start_elevation_m": 228.3344942838107,
   "end_elevation_m": 235.13120149687018,
   "min_gradient_pct": -17.342305046342858,
   "suppressed_max_gradient_pct": 31.949854921247493,
   "suppressed_location_m": [
    220.0,
    245.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 25.48869069714692,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 361.0,
   "end_distance_m": 411.0,
   "start_elevation_m": 225.31539165302806,
   "end_elevation_m": 238.05973700160152,
   "min_gradient_pct": -12.043479072337561
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 24.24829405603066,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 356.0,
   "end_distance_m": 456.0,
   "start_elevation_m": 224.20007396607227,
   "end_elevation_m": 248.44836802210293,
   "min_gradient_pct": -9.251104429020813
  }
 ],
 "shape": {
  "ascent_concentration": 0.468,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 151.0,
  "shape_class": "stepped"
 },
 "length_m": 1564.099213232955,
 "start_elevation_m": 200.78617202985725,
 "end_elevation_m": 308.4585157506113,
 "endpoint_gain_m": 107.67234372075404,
 "overall_gradient_pct": 6.883984264540222,
 "accumulated_ascent_m": 148.28316201862455,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 38.20691546373325,
   "start_distance_m": 374.0,
   "end_distance_m": 379.0,
   "midpoint_distance_m": 376.5,
   "start_elevation_m": 228.3344942838107,
   "end_elevation_m": 230.24484005699736,
   "start_xy": [
    359026.8333997902,
    4907146.467798843
   ],
   "end_xy": [
    359030.54718375753,
    4907143.11999336
   ]
  },
  "max_10m": {
   "gradient_pct": 32.319823974195856,
   "start_distance_m": 375.0,
   "end_distance_m": 385.0,
   "midpoint_distance_m": 380.0,
   "start_elevation_m": 228.63522779714867,
   "end_elevation_m": 231.86721019456826,
   "start_xy": [
    359027.5764761062,
    4907145.798592205
   ],
   "end_xy": [
    359035.003596058,
    4907139.10248404
   ]
  },
  "max_20m": {
   "gradient_pct": 28.15421767330946,
   "start_distance_m": 373.0,
   "end_distance_m": 393.0,
   "midpoint_distance_m": 383.0,
   "start_elevation_m": 228.08532700126386,
   "end_elevation_m": 233.71617053592576,
   "start_xy": [
    359026.0910705041,
    4907147.137833912
   ],
   "end_xy": [
    359040.9454406649,
    4907133.74576204
   ]
  },
  "max_25m": {
   "gradient_pct": 27.18682885223791,
   "start_distance_m": 374.0,
   "end_distance_m": 399.0,
   "midpoint_distance_m": 386.5,
   "start_elevation_m": 228.3344942838107,
   "end_elevation_m": 235.13120149687018,
   "start_xy": [
    359026.8333997902,
    4907146.467798843
   ],
   "end_xy": [
    359045.4023010649,
    4907129.728750049
   ]
  },
  "max_50m": {
   "gradient_pct": 25.48869069714692,
   "start_distance_m": 361.0,
   "end_distance_m": 411.0,
   "midpoint_distance_m": 386.0,
   "start_elevation_m": 225.31539165302806,
   "end_elevation_m": 238.05973700160152,
   "start_xy": [
    359017.17815797165,
    4907155.172754931
   ],
   "end_xy": [
    359053.8544258198,
    4907121.261788116
   ]
  },
  "max_100m": {
   "gradient_pct": 24.24829405603066,
   "start_distance_m": 356.0,
   "end_distance_m": 456.0,
   "midpoint_distance_m": 406.0,
   "start_elevation_m": 224.20007396607227,
   "end_elevation_m": 248.44836802210293,
   "start_xy": [
    359013.46443562873,
    4907158.520628707
   ],
   "end_xy": [
    359081.33724766906,
    4907085.629019421
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -36.343561441360634,
   "start_distance_m": 1340.0,
   "end_distance_m": 1345.0,
   "midpoint_distance_m": 1342.5,
   "start_elevation_m": 306.4344264305907,
   "end_elevation_m": 304.61724835852266,
   "start_xy": [
    359444.4189881664,
    4906366.446471623
   ],
   "end_xy": [
    359446.7005589569,
    4906361.997378352
   ]
  },
  "min_10m": {
   "gradient_pct": -28.95290813560223,
   "start_distance_m": 1335.0,
   "end_distance_m": 1345.0,
   "midpoint_distance_m": 1340.0,
   "start_elevation_m": 307.5125391720829,
   "end_elevation_m": 304.61724835852266,
   "start_xy": [
    359442.1376474825,
    4906370.895682869
   ],
   "end_xy": [
    359446.7005589569,
    4906361.997378352
   ]
  },
  "min_20m": {
   "gradient_pct": -19.42166567158793,
   "start_distance_m": 148.0,
   "end_distance_m": 168.0,
   "midpoint_distance_m": 158.0,
   "start_elevation_m": 201.6738665323041,
   "end_elevation_m": 197.7895333979865,
   "start_xy": [
    358945.83869677334,
    4907320.070734226
   ],
   "end_xy": [
    358934.5358075733,
    4907303.570896014
   ]
  },
  "min_25m": {
   "gradient_pct": -17.342305046342858,
   "start_distance_m": 143.0,
   "end_distance_m": 168.0,
   "midpoint_distance_m": 155.5,
   "start_elevation_m": 202.12510965957222,
   "end_elevation_m": 197.7895333979865,
   "start_xy": [
    358948.66458920704,
    4907324.19557716
   ],
   "end_xy": [
    358934.5358075733,
    4907303.570896014
   ]
  },
  "min_50m": {
   "gradient_pct": -12.043479072337561,
   "start_distance_m": 118.0,
   "end_distance_m": 168.0,
   "midpoint_distance_m": 143.0,
   "start_elevation_m": 203.81127293415528,
   "end_elevation_m": 197.7895333979865,
   "start_xy": [
    358962.6303403863,
    4907344.910219403
   ],
   "end_xy": [
    358934.5358075733,
    4907303.570896014
   ]
  },
  "min_100m": {
   "gradient_pct": -9.251104429020813,
   "start_distance_m": 1301.0,
   "end_distance_m": 1401.0,
   "midpoint_distance_m": 1351.0,
   "start_elevation_m": 309.8522900340114,
   "end_elevation_m": 300.6011856049906,
   "start_xy": [
    359426.6221739339,
    4906401.149109844
   ],
   "end_xy": [
    359474.11650614673,
    4906313.1772005325
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 46.75172155172902,
   "start_distance_m": 785.0,
   "end_distance_m": 787.0,
   "midpoint_distance_m": 786.0,
   "start_elevation_m": 294.01966725268437,
   "end_elevation_m": 294.95470168371895,
   "start_xy": [
    359200.7958365442,
    4906824.158858819
   ],
   "end_xy": [
    359202.777065732,
    4906823.885490408
   ]
  },
  "max_3m": {
   "gradient_pct": 42.51513283105434,
   "start_distance_m": 375.0,
   "end_distance_m": 378.0,
   "midpoint_distance_m": 376.5,
   "start_elevation_m": 228.63522779714867,
   "end_elevation_m": 229.9106817820803,
   "start_xy": [
    359027.5764761062,
    4907145.798592205
   ],
   "end_xy": [
    359029.8044676903,
    4907143.789599795
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.031,
   "windows_resited": [
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    191.0,
    233.0
   ],
   [
    1341.0,
    1346.0
   ]
  ],
  "review": [],
  "extent": [
   "descends_at_start",
   "may_continue_beyond_end"
  ],
  "suggested_summit_cut_m": 979.0,
  "trailing_descent_m": 13.6
 },
 "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/me/USGS_1M_19_x35y491_ME_WesternMtns_B24.tif"
  ],
  "calculated_at": "2026-08-25T06:10:56+00:00",
  "road_source": "../ne-docs/me/picnic-hill-road/picnic-hill-road.geojson",
  "run_id": "rebatch-xsection-me-260825",
  "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, ME_WesternMtns_B24 (collected 2024)",
  "elevation_tile_ids": [
   "x35y491"
  ],
  "climb_origin": "discovered",
  "notes": "NE box session: masked re-batch, xsection channel-crossing evidence (calibrated vs the NHD-confirmed population, 2026-08-25) + manifest masks where present. ADOPTED (NE wave 2, 2026-08-25): clean-steep,qualified-steep. Wales dials; max25-contaminated class resolved by the box session \u2014 doc era: masked re-batch. Evidence in ne-adoption-audits (triage, xsection, mask manifest).",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "mask_ranges_m": [
   [
    196.0,
    228.0
   ]
  ],
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "South Oxford",
  "county": "Maine"
 }
}