{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (44.3312, -70.3706)",
 "slug": "discovered-lane-44-3312-70-3706",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 56.92396121120993,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 225.0,
   "end_distance_m": 227.0,
   "start_elevation_m": 171.50105225886062,
   "end_elevation_m": 172.63953148308482,
   "min_gradient_pct": -16.286817928234854,
   "suppressed_max_gradient_pct": 64.44159325481778,
   "suppressed_location_m": [
    10.0,
    12.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 55.91995237035595,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 225.0,
   "end_distance_m": 228.0,
   "start_elevation_m": 171.50105225886062,
   "end_elevation_m": 173.1786508299713,
   "min_gradient_pct": -10.951493338896512
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 52.13819862956484,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 224.0,
   "end_distance_m": 229.0,
   "start_elevation_m": 171.00943472721042,
   "end_elevation_m": 173.61634465868866,
   "min_gradient_pct": -4.213904354693341
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 46.01015817125983,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 160.0,
   "end_distance_m": 170.0,
   "start_elevation_m": 149.51335051980956,
   "end_elevation_m": 154.11436633693555,
   "min_gradient_pct": -0.9262883583275539
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 39.56818612754944,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 212.0,
   "end_distance_m": 232.0,
   "start_elevation_m": 166.8947775909808,
   "end_elevation_m": 174.80841481649068,
   "min_gradient_pct": 2.615807759002138
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 37.92054250731769,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 208.0,
   "end_distance_m": 233.0,
   "start_elevation_m": 165.60032609321885,
   "end_elevation_m": 175.08046172004828,
   "min_gradient_pct": 5.141158201437861
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 35.492474679937345,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 192.0,
   "end_distance_m": 242.0,
   "start_elevation_m": 160.04331367093533,
   "end_elevation_m": 177.789551010904,
   "min_gradient_pct": 10.669420889420053
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 33.352830974517445,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 153.0,
   "end_distance_m": 253.0,
   "start_elevation_m": 147.29351825688818,
   "end_elevation_m": 180.64634923140562,
   "min_gradient_pct": 17.555157117516956
  }
 ],
 "shape": {
  "ascent_concentration": 0.353,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 416.0,
  "shape_class": "sustained"
 },
 "length_m": 445.18565648195465,
 "start_elevation_m": 115.7896621915234,
 "end_elevation_m": 219.04815322398707,
 "endpoint_gain_m": 103.25849103246367,
 "overall_gradient_pct": 23.194478422430752,
 "accumulated_ascent_m": 104.11902047459854,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 52.13819862956484,
   "start_distance_m": 224.0,
   "end_distance_m": 229.0,
   "midpoint_distance_m": 226.5,
   "start_elevation_m": 171.00943472721042,
   "end_elevation_m": 173.61634465868866,
   "start_xy": [
    390568.0831275637,
    4909416.229339247
   ],
   "end_xy": [
    390564.53746076825,
    4909412.703967355
   ]
  },
  "max_10m": {
   "gradient_pct": 46.01015817125983,
   "start_distance_m": 160.0,
   "end_distance_m": 170.0,
   "midpoint_distance_m": 165.0,
   "start_elevation_m": 149.51335051980956,
   "end_elevation_m": 154.11436633693555,
   "start_xy": [
    390613.4676625455,
    4909461.354099462
   ],
   "end_xy": [
    390606.3763289546,
    4909454.303355678
   ]
  },
  "max_20m": {
   "gradient_pct": 39.56818612754944,
   "start_distance_m": 212.0,
   "end_distance_m": 232.0,
   "midpoint_distance_m": 222.0,
   "start_elevation_m": 166.8947775909808,
   "end_elevation_m": 174.80841481649068,
   "start_xy": [
    390576.5927278728,
    4909424.690231787
   ],
   "end_xy": [
    390562.410060691,
    4909410.588744219
   ]
  },
  "max_25m": {
   "gradient_pct": 37.92054250731769,
   "start_distance_m": 208.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 220.5,
   "start_elevation_m": 165.60032609321885,
   "end_elevation_m": 175.08046172004828,
   "start_xy": [
    390579.42926130915,
    4909427.5105293
   ],
   "end_xy": [
    390561.70092733187,
    4909409.883669841
   ]
  },
  "max_50m": {
   "gradient_pct": 35.492474679937345,
   "start_distance_m": 192.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 217.0,
   "start_elevation_m": 160.04331367093533,
   "end_elevation_m": 177.789551010904,
   "start_xy": [
    390590.7753950546,
    4909438.791719355
   ],
   "end_xy": [
    390555.3187271001,
    4909403.5380004365
   ]
  },
  "max_100m": {
   "gradient_pct": 33.352830974517445,
   "start_distance_m": 153.0,
   "end_distance_m": 253.0,
   "midpoint_distance_m": 203.0,
   "start_elevation_m": 147.29351825688818,
   "end_elevation_m": 180.64634923140562,
   "start_xy": [
    390618.4315960591,
    4909466.289620111
   ],
   "end_xy": [
    390547.5182601501,
    4909395.782182274
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.213904354693341,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 115.7896621915234,
   "end_elevation_m": 115.57896697378874,
   "start_xy": [
    390726.929,
    4909574.166
   ],
   "end_xy": [
    390723.38333320455,
    4909570.640628109
   ]
  },
  "min_10m": {
   "gradient_pct": -0.9262883583275539,
   "start_distance_m": 19.0,
   "end_distance_m": 29.0,
   "midpoint_distance_m": 24.0,
   "start_elevation_m": 118.26284322730645,
   "end_elevation_m": 118.17021439147369,
   "start_xy": [
    390713.45546617726,
    4909560.769586811
   ],
   "end_xy": [
    390706.3641325864,
    4909553.718843028
   ]
  },
  "min_20m": {
   "gradient_pct": 2.615807759002138,
   "start_distance_m": 14.0,
   "end_distance_m": 34.0,
   "midpoint_distance_m": 24.0,
   "start_elevation_m": 117.92376763433688,
   "end_elevation_m": 118.44692918613731,
   "start_xy": [
    390717.0011329727,
    4909564.294958703
   ],
   "end_xy": [
    390702.81846579094,
    4909550.193471136
   ]
  },
  "min_25m": {
   "gradient_pct": 5.141158201437861,
   "start_distance_m": 14.0,
   "end_distance_m": 39.0,
   "midpoint_distance_m": 26.5,
   "start_elevation_m": 117.92376763433688,
   "end_elevation_m": 119.20905718469635,
   "start_xy": [
    390717.0011329727,
    4909564.294958703
   ],
   "end_xy": [
    390699.2727989955,
    4909546.668099244
   ]
  },
  "min_50m": {
   "gradient_pct": 10.669420889420053,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 115.7896621915234,
   "end_elevation_m": 121.12437263623343,
   "start_xy": [
    390726.929,
    4909574.166
   ],
   "end_xy": [
    390691.4723320455,
    4909538.912281082
   ]
  },
  "min_100m": {
   "gradient_pct": 17.555157117516956,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 115.7896621915234,
   "end_elevation_m": 133.34481930904036,
   "start_xy": [
    390726.929,
    4909574.166
   ],
   "end_xy": [
    390656.0156640909,
    4909503.658562164
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 56.92396121120993,
   "start_distance_m": 225.0,
   "end_distance_m": 227.0,
   "midpoint_distance_m": 226.0,
   "start_elevation_m": 171.50105225886062,
   "end_elevation_m": 172.63953148308482,
   "start_xy": [
    390567.3739942046,
    4909415.524264868
   ],
   "end_xy": [
    390565.95572748646,
    4909414.114116112
   ]
  },
  "max_3m": {
   "gradient_pct": 55.91995237035595,
   "start_distance_m": 225.0,
   "end_distance_m": 228.0,
   "midpoint_distance_m": 226.5,
   "start_elevation_m": 171.50105225886062,
   "end_elevation_m": 173.1786508299713,
   "start_xy": [
    390567.3739942046,
    4909415.524264868
   ],
   "end_xy": [
    390565.2465941273,
    4909413.4090417335
   ]
  }
 },
 "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": 0.013,
   "windows_resited": [
    2.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    9.0,
    14.0
   ]
  ],
  "review": [
   "max5_over_45",
   "max10_over_40"
  ],
  "extent": [
   "may_start_earlier",
   "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_x39y491_ME_WesternMtns_B24.tif"
  ],
  "calculated_at": "2026-08-24T20:33:23+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": [
   "x39y491"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 29.6% over 200 m (Terrain 50), gain 104.3 m over 445 m way. KEPT at seed extent: no ascending continuation (min_avg=2.0%). ADOPTED (NE wave 1, 2026-08-25): clean-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": "Sumner",
  "county": "Maine"
 }
}