{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (45.1956, -69.9064)",
 "slug": "discovered-lane-45-1956-69-9064",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 37.97775727666419,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 430.0,
   "end_distance_m": 432.0,
   "start_elevation_m": 398.30596016893367,
   "end_elevation_m": 399.06551531446695,
   "min_gradient_pct": -36.87260480645307,
   "suppressed_max_gradient_pct": 49.73471796645299,
   "suppressed_location_m": [
    302.0,
    304.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 35.0095236197698,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 430.0,
   "end_distance_m": 433.0,
   "start_elevation_m": 398.30596016893367,
   "end_elevation_m": 399.35624587752676,
   "min_gradient_pct": -29.863316052895545,
   "suppressed_max_gradient_pct": 45.644489964587365,
   "suppressed_location_m": [
    301.0,
    304.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.12227197636139,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 429.0,
   "end_distance_m": 434.0,
   "start_elevation_m": 398.0177852419868,
   "end_elevation_m": 399.6238988408049,
   "min_gradient_pct": -19.253078613151047,
   "suppressed_max_gradient_pct": 32.56829144523181,
   "suppressed_location_m": [
    301.0,
    306.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.403665563678715,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 425.0,
   "end_distance_m": 435.0,
   "start_elevation_m": 397.29245262719655,
   "end_elevation_m": 399.8328191835644,
   "min_gradient_pct": -14.142651330383273
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.767416916255456,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 460.0,
   "end_distance_m": 480.0,
   "start_elevation_m": 403.9180848291064,
   "end_elevation_m": 408.4715682123575,
   "min_gradient_pct": -11.591296018740707
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.776962615840603,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 459.0,
   "end_distance_m": 484.0,
   "start_elevation_m": 403.6932208193002,
   "end_elevation_m": 409.3874614732604,
   "min_gradient_pct": -10.390351632537886
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.01026398338115,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 442.0,
   "end_distance_m": 492.0,
   "start_elevation_m": 400.57810403359343,
   "end_elevation_m": 411.083236025284,
   "min_gradient_pct": -7.369422019649733
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.012335555667505,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 411.0,
   "end_distance_m": 511.0,
   "start_elevation_m": 396.17507770988345,
   "end_elevation_m": 414.18741326555096,
   "min_gradient_pct": -4.336014975817989
  }
 ],
 "shape": {
  "ascent_concentration": 0.5,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 97.0,
  "shape_class": "stepped"
 },
 "length_m": 1743.8637982560167,
 "start_elevation_m": 383.18156547317284,
 "end_elevation_m": 465.54337429505296,
 "endpoint_gain_m": 82.36180882188012,
 "overall_gradient_pct": 4.722949630828254,
 "accumulated_ascent_m": 100.43173327830243,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.12227197636139,
   "start_distance_m": 429.0,
   "end_distance_m": 434.0,
   "midpoint_distance_m": 431.5,
   "start_elevation_m": 398.0177852419868,
   "end_elevation_m": 399.6238988408049,
   "start_xy": [
    428188.88328471035,
    5005433.086304375
   ],
   "end_xy": [
    428190.77999129286,
    5005428.460021274
   ]
  },
  "max_10m": {
   "gradient_pct": 25.403665563678715,
   "start_distance_m": 425.0,
   "end_distance_m": 435.0,
   "midpoint_distance_m": 430.0,
   "start_elevation_m": 397.29245262719655,
   "end_elevation_m": 399.8328191835644,
   "start_xy": [
    428187.36501614924,
    5005436.786960688
   ],
   "end_xy": [
    428191.15998651524,
    5005427.535032825
   ]
  },
  "max_20m": {
   "gradient_pct": 22.767416916255456,
   "start_distance_m": 460.0,
   "end_distance_m": 480.0,
   "midpoint_distance_m": 470.0,
   "start_elevation_m": 403.9180848291064,
   "end_elevation_m": 408.4715682123575,
   "start_xy": [
    428205.2779869638,
    5005408.690531492
   ],
   "end_xy": [
    428223.2225719779,
    5005399.859241854
   ]
  },
  "max_25m": {
   "gradient_pct": 22.776962615840603,
   "start_distance_m": 459.0,
   "end_distance_m": 484.0,
   "midpoint_distance_m": 471.5,
   "start_elevation_m": 403.6932208193002,
   "end_elevation_m": 409.3874614732604,
   "start_xy": [
    428204.3809735349,
    5005409.13253478
   ],
   "end_xy": [
    428226.8112124641,
    5005398.092420627
   ]
  },
  "max_50m": {
   "gradient_pct": 21.01026398338115,
   "start_distance_m": 442.0,
   "end_distance_m": 492.0,
   "midpoint_distance_m": 467.0,
   "start_elevation_m": 400.57810403359343,
   "end_elevation_m": 411.083236025284,
   "start_xy": [
    428193.816178549,
    5005421.058565374
   ],
   "end_xy": [
    428233.9888881334,
    5005394.559580081
   ]
  },
  "max_100m": {
   "gradient_pct": 18.012335555667505,
   "start_distance_m": 411.0,
   "end_distance_m": 511.0,
   "midpoint_distance_m": 461.0,
   "start_elevation_m": 396.17507770988345,
   "end_elevation_m": 414.18741326555096,
   "start_xy": [
    428182.05298373406,
    5005449.740039595
   ],
   "end_xy": [
    428251.03606561397,
    5005386.169489408
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -19.253078613151047,
   "start_distance_m": 295.0,
   "end_distance_m": 300.0,
   "midpoint_distance_m": 297.5,
   "start_elevation_m": 390.16252391663136,
   "end_elevation_m": 389.1998699859738,
   "start_xy": [
    428138.0341755519,
    5005557.063571079
   ],
   "end_xy": [
    428139.9312334109,
    5005552.437431829
   ]
  },
  "min_10m": {
   "gradient_pct": -14.142651330383273,
   "start_distance_m": 1621.0,
   "end_distance_m": 1631.0,
   "midpoint_distance_m": 1626.0,
   "start_elevation_m": 464.9047686914714,
   "end_elevation_m": 463.4905035584331,
   "start_xy": [
    429242.61726748035,
    5005070.916144007
   ],
   "end_xy": [
    429249.2955751808,
    5005078.265356859
   ]
  },
  "min_20m": {
   "gradient_pct": -11.591296018740707,
   "start_distance_m": 1616.0,
   "end_distance_m": 1636.0,
   "midpoint_distance_m": 1626.0,
   "start_elevation_m": 465.3625113726008,
   "end_elevation_m": 463.04425216885267,
   "start_xy": [
    429239.5666367275,
    5005066.9546234235
   ],
   "end_xy": [
    429253.34508248436,
    5005081.198185931
   ]
  },
  "min_25m": {
   "gradient_pct": -10.390351632537886,
   "start_distance_m": 1611.0,
   "end_distance_m": 1636.0,
   "midpoint_distance_m": 1623.5,
   "start_elevation_m": 465.64184007698714,
   "end_elevation_m": 463.04425216885267,
   "start_xy": [
    429236.5165830451,
    5005062.9926579585
   ],
   "end_xy": [
    429253.34508248436,
    5005081.198185931
   ]
  },
  "min_50m": {
   "gradient_pct": -7.369422019649733,
   "start_distance_m": 1590.0,
   "end_distance_m": 1640.0,
   "midpoint_distance_m": 1615.0,
   "start_elevation_m": 466.57772605974355,
   "end_elevation_m": 462.8930150499187,
   "start_xy": [
    429223.7035263967,
    5005046.354584316
   ],
   "end_xy": [
    429256.58416673663,
    5005083.545168981
   ]
  },
  "min_100m": {
   "gradient_pct": -4.336014975817989,
   "start_distance_m": 1562.0,
   "end_distance_m": 1662.0,
   "midpoint_distance_m": 1612.0,
   "start_elevation_m": 466.76308644962216,
   "end_elevation_m": 462.4270714738042,
   "start_xy": [
    429201.3737662123,
    5005031.332311515
   ],
   "end_xy": [
    429274.4001552293,
    5005096.452160642
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 37.97775727666419,
   "start_distance_m": 430.0,
   "end_distance_m": 432.0,
   "midpoint_distance_m": 431.0,
   "start_elevation_m": 398.30596016893367,
   "end_elevation_m": 399.06551531446695,
   "start_xy": [
    428189.2620734493,
    5005432.16082121
   ],
   "end_xy": [
    428190.0212081831,
    5005430.310493238
   ]
  },
  "max_3m": {
   "gradient_pct": 35.0095236197698,
   "start_distance_m": 430.0,
   "end_distance_m": 433.0,
   "midpoint_distance_m": 431.5,
   "start_elevation_m": 398.30596016893367,
   "end_elevation_m": 399.35624587752676,
   "start_xy": [
    428189.2620734493,
    5005432.16082121
   ],
   "end_xy": [
    428190.4012027872,
    5005429.385504535
   ]
  }
 },
 "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": 0.027,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    280.0,
    326.0
   ]
  ],
  "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:26919",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/me/USGS_1M_19_x42y501_ME_WesternMtns_B24.tif"
  ],
  "calculated_at": "2026-09-03T22:38:22+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": "canopy-tail-260903",
  "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": [
   "x42y501"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: ME_ME_MA_QL2_L1_2015: no corridor points fetched; ME_MidCentral_1_B23: no corridor points fetched",
  "mask_ranges_m": [
   [
    285.0,
    321.0
   ]
  ],
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Caratunk",
  "county": "Maine"
 }
}