{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (44.4165, -70.6759)",
 "slug": "discovered-lane-44-4165-70-6759",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 34.75963828743289,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 174.0,
   "end_distance_m": 176.0,
   "start_elevation_m": 240.7385530063055,
   "end_elevation_m": 241.43374577205415,
   "min_gradient_pct": -7.2628993781279405
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.848839976621015,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 174.0,
   "end_distance_m": 177.0,
   "start_elevation_m": 240.7385530063055,
   "end_elevation_m": 241.72401820560412,
   "min_gradient_pct": -5.594894221897562
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.03269048292475,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 174.0,
   "end_distance_m": 179.0,
   "start_elevation_m": 240.7385530063055,
   "end_elevation_m": 242.29018753045173,
   "min_gradient_pct": -5.144835444647242
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 29.861657976269953,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 174.0,
   "end_distance_m": 184.0,
   "start_elevation_m": 240.7385530063055,
   "end_elevation_m": 243.7247188039325,
   "min_gradient_pct": -2.9452722996089165
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 28.669804822691702,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 173.0,
   "end_distance_m": 193.0,
   "start_elevation_m": 240.4761430428529,
   "end_elevation_m": 246.21010400739124,
   "min_gradient_pct": 2.1560954776701635
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 27.28354827632279,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 168.0,
   "end_distance_m": 193.0,
   "start_elevation_m": 239.38921693831054,
   "end_elevation_m": 246.21010400739124,
   "min_gradient_pct": 2.9848908742069398
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.125552060596473,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 149.0,
   "end_distance_m": 199.0,
   "start_elevation_m": 235.92837424093747,
   "end_elevation_m": 247.4911502712357,
   "min_gradient_pct": 4.429638114132956
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.974375360905782,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 99.0,
   "end_distance_m": 199.0,
   "start_elevation_m": 227.51677491032993,
   "end_elevation_m": 247.4911502712357,
   "min_gradient_pct": 6.849265395607034
  }
 ],
 "shape": {
  "ascent_concentration": 0.427,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 119.0,
  "shape_class": "sustained"
 },
 "length_m": 199.3341951321845,
 "start_elevation_m": 220.76379644531278,
 "end_elevation_m": 247.56388118548944,
 "endpoint_gain_m": 26.800084740176658,
 "overall_gradient_pct": 13.444800437980405,
 "accumulated_ascent_m": 27.219580001808197,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.03269048292475,
   "start_distance_m": 174.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 176.5,
   "start_elevation_m": 240.7385530063055,
   "end_elevation_m": 242.29018753045173,
   "start_xy": [
    366598.322453201,
    4919486.910148782
   ],
   "end_xy": [
    366594.71005243086,
    4919490.367107079
   ]
  },
  "max_10m": {
   "gradient_pct": 29.861657976269953,
   "start_distance_m": 174.0,
   "end_distance_m": 184.0,
   "midpoint_distance_m": 179.0,
   "start_elevation_m": 240.7385530063055,
   "end_elevation_m": 243.7247188039325,
   "start_xy": [
    366598.322453201,
    4919486.910148782
   ],
   "end_xy": [
    366591.0976516608,
    4919493.824065378
   ]
  },
  "max_20m": {
   "gradient_pct": 28.669804822691702,
   "start_distance_m": 173.0,
   "end_distance_m": 193.0,
   "midpoint_distance_m": 183.0,
   "start_elevation_m": 240.4761430428529,
   "end_elevation_m": 246.21010400739124,
   "start_xy": [
    366599.044933355,
    4919486.218757122
   ],
   "end_xy": [
    366584.59533027466,
    4919500.046590315
   ]
  },
  "max_25m": {
   "gradient_pct": 27.28354827632279,
   "start_distance_m": 168.0,
   "end_distance_m": 193.0,
   "midpoint_distance_m": 180.5,
   "start_elevation_m": 239.38921693831054,
   "end_elevation_m": 246.21010400739124,
   "start_xy": [
    366602.6573341251,
    4919482.761798823
   ],
   "end_xy": [
    366584.59533027466,
    4919500.046590315
   ]
  },
  "max_50m": {
   "gradient_pct": 23.125552060596473,
   "start_distance_m": 149.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 174.0,
   "start_elevation_m": 235.92837424093747,
   "end_elevation_m": 247.4911502712357,
   "start_xy": [
    366616.3844570514,
    4919469.62535729
   ],
   "end_xy": [
    366580.2604493505,
    4919504.194940273
   ]
  },
  "max_100m": {
   "gradient_pct": 19.974375360905782,
   "start_distance_m": 99.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 149.0,
   "start_elevation_m": 227.51677491032993,
   "end_elevation_m": 247.4911502712357,
   "start_xy": [
    366652.5084647523,
    4919435.055774307
   ],
   "end_xy": [
    366580.2604493505,
    4919504.194940273
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.144835444647242,
   "start_distance_m": 74.0,
   "end_distance_m": 79.0,
   "midpoint_distance_m": 76.5,
   "start_elevation_m": 225.56503820470434,
   "end_elevation_m": 225.30779643247197,
   "start_xy": [
    366670.5704686027,
    4919417.770982815
   ],
   "end_xy": [
    366666.95806783263,
    4919421.2279411135
   ]
  },
  "min_10m": {
   "gradient_pct": -2.9452722996089165,
   "start_distance_m": 73.0,
   "end_distance_m": 83.0,
   "midpoint_distance_m": 78.0,
   "start_elevation_m": 225.56562019712536,
   "end_elevation_m": 225.27109296716446,
   "start_xy": [
    366671.2929487567,
    4919417.079591155
   ],
   "end_xy": [
    366664.0681472166,
    4919423.993507752
   ]
  },
  "min_20m": {
   "gradient_pct": 2.1560954776701635,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 220.76379644531278,
   "end_elevation_m": 221.1950155408468,
   "start_xy": [
    366724.034,
    4919366.608
   ],
   "end_xy": [
    366709.58439691964,
    4919380.435833193
   ]
  },
  "min_25m": {
   "gradient_pct": 2.9848908742069398,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 220.76379644531278,
   "end_elevation_m": 221.5100191638645,
   "start_xy": [
    366724.034,
    4919366.608
   ],
   "end_xy": [
    366705.9719961496,
    4919383.892791492
   ]
  },
  "min_50m": {
   "gradient_pct": 4.429638114132956,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 220.76379644531278,
   "end_elevation_m": 222.97861550237926,
   "start_xy": [
    366724.034,
    4919366.608
   ],
   "end_xy": [
    366687.9099922991,
    4919401.177582983
   ]
  },
  "min_100m": {
   "gradient_pct": 6.849265395607034,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 220.76379644531278,
   "end_elevation_m": 227.6130618409198,
   "start_xy": [
    366724.034,
    4919366.608
   ],
   "end_xy": [
    366651.7859845983,
    4919435.747165966
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 34.75963828743289,
   "start_distance_m": 174.0,
   "end_distance_m": 176.0,
   "midpoint_distance_m": 175.0,
   "start_elevation_m": 240.7385530063055,
   "end_elevation_m": 241.43374577205415,
   "start_xy": [
    366598.322453201,
    4919486.910148782
   ],
   "end_xy": [
    366596.87749289296,
    4919488.292932101
   ]
  },
  "max_3m": {
   "gradient_pct": 32.848839976621015,
   "start_distance_m": 174.0,
   "end_distance_m": 177.0,
   "midpoint_distance_m": 175.5,
   "start_elevation_m": 240.7385530063055,
   "end_elevation_m": 241.72401820560412,
   "start_xy": [
    366598.322453201,
    4919486.910148782
   ],
   "end_xy": [
    366596.15501273895,
    4919488.9843237605
   ]
  }
 },
 "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:26919",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/me/USGS_1M_19_x36y492_ME_WesternMtns_B24.tif"
  ],
  "calculated_at": "2026-08-24T20:54:03+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/maine-2026-08-22.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "run_id": "redo-me-1-260824",
  "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": [
   "x36y492"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 13.5% over 200 m (Terrain 50), gain 26.9 m over 199 m way. KEPT at seed extent: no ascending continuation (min_avg=2.0%). ADOPTED (NE wave 1, 2026-08-25): clean-steep,qualified-steep. Wales dials per PRODUCTION 'US ADOPTION DIALS'.",
  "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.html"
 },
 "area": {
  "place": "Woodstock",
  "county": "Maine"
 }
}