{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (42.2174, -73.0895)",
 "slug": "discovered-lane-42-2174-73-0895",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.82889993947606,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 136.0,
   "end_distance_m": 138.0,
   "start_elevation_m": 417.9250526356559,
   "end_elevation_m": 418.4816306344454,
   "min_gradient_pct": -17.62533611156698
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.19344287465333,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 135.0,
   "end_distance_m": 138.0,
   "start_elevation_m": 417.6658273482058,
   "end_elevation_m": 418.4816306344454,
   "min_gradient_pct": -15.959476993136454
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.48152969667649,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 135.0,
   "end_distance_m": 140.0,
   "start_elevation_m": 417.6658273482058,
   "end_elevation_m": 418.98990383303965,
   "min_gradient_pct": -12.51728605065523
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.945814464084606,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 133.0,
   "end_distance_m": 143.0,
   "start_elevation_m": 417.28166619517367,
   "end_elevation_m": 419.77624764158213,
   "min_gradient_pct": -9.789799446934921
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.88003723263506,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 127.0,
   "end_distance_m": 147.0,
   "start_elevation_m": 416.12980044041524,
   "end_elevation_m": 420.50580788694225,
   "min_gradient_pct": -8.901403293606336
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.597505836371738,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 132.0,
   "end_distance_m": 157.0,
   "start_elevation_m": 417.05621644816785,
   "end_elevation_m": 422.4555929072608,
   "min_gradient_pct": -8.551656354213264
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.4424754433453,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 127.0,
   "end_distance_m": 177.0,
   "start_elevation_m": 416.12980044041524,
   "end_elevation_m": 425.8510381620879,
   "min_gradient_pct": -6.687679061348376
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.363309865189024,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 57.0,
   "end_distance_m": 157.0,
   "start_elevation_m": 404.09228304207176,
   "end_elevation_m": 422.4555929072608,
   "min_gradient_pct": -5.127131923941931
  }
 ],
 "shape": {
  "ascent_concentration": 0.456,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 183.0,
  "shape_class": "stepped"
 },
 "length_m": 1641.6225848627575,
 "start_elevation_m": 398.9672953747662,
 "end_elevation_m": 469.2879659576515,
 "endpoint_gain_m": 70.32067058288533,
 "overall_gradient_pct": 4.283607647172096,
 "accumulated_ascent_m": 92.96552829281569,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.48152969667649,
   "start_distance_m": 135.0,
   "end_distance_m": 140.0,
   "midpoint_distance_m": 137.5,
   "start_elevation_m": 417.6658273482058,
   "end_elevation_m": 418.98990383303965,
   "start_xy": [
    657476.8103243528,
    4674972.5187473465
   ],
   "end_xy": [
    657481.4422133161,
    4674970.635770605
   ]
  },
  "max_10m": {
   "gradient_pct": 24.945814464084606,
   "start_distance_m": 133.0,
   "end_distance_m": 143.0,
   "midpoint_distance_m": 138.0,
   "start_elevation_m": 417.28166619517367,
   "end_elevation_m": 419.77624764158213,
   "start_xy": [
    657474.9578086986,
    4674973.272528209
   ],
   "end_xy": [
    657484.2212530955,
    4674969.505754409
   ]
  },
  "max_20m": {
   "gradient_pct": 21.88003723263506,
   "start_distance_m": 127.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 137.0,
   "start_elevation_m": 416.12980044041524,
   "end_elevation_m": 420.50580788694225,
   "start_xy": [
    657469.456752372,
    4674975.662539884
   ],
   "end_xy": [
    657487.9786179096,
    4674968.142081362
   ]
  },
  "max_25m": {
   "gradient_pct": 21.597505836371738,
   "start_distance_m": 132.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 144.5,
   "start_elevation_m": 417.05621644816785,
   "end_elevation_m": 422.4555929072608,
   "start_xy": [
    657474.0312845584,
    4674973.648763505
   ],
   "end_xy": [
    657497.5037293187,
    4674965.097045707
   ]
  },
  "max_50m": {
   "gradient_pct": 19.4424754433453,
   "start_distance_m": 127.0,
   "end_distance_m": 177.0,
   "midpoint_distance_m": 152.0,
   "start_elevation_m": 416.12980044041524,
   "end_elevation_m": 425.8510381620879,
   "start_xy": [
    657469.456752372,
    4674975.662539884
   ],
   "end_xy": [
    657516.7876892989,
    4674959.8194713555
   ]
  },
  "max_100m": {
   "gradient_pct": 18.363309865189024,
   "start_distance_m": 57.0,
   "end_distance_m": 157.0,
   "midpoint_distance_m": 107.0,
   "start_elevation_m": 404.09228304207176,
   "end_elevation_m": 422.4555929072608,
   "start_xy": [
    657404.6581095855,
    4675001.521434776
   ],
   "end_xy": [
    657497.5037293187,
    4674965.097045707
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.51728605065523,
   "start_distance_m": 1254.0,
   "end_distance_m": 1259.0,
   "midpoint_distance_m": 1256.5,
   "start_elevation_m": 471.8418668820786,
   "end_elevation_m": 471.21600257954583,
   "start_xy": [
    657649.6871180125,
    4675847.613873241
   ],
   "end_xy": [
    657649.199175207,
    4675852.590006898
   ]
  },
  "min_10m": {
   "gradient_pct": -9.789799446934921,
   "start_distance_m": 317.0,
   "end_distance_m": 327.0,
   "midpoint_distance_m": 322.0,
   "start_elevation_m": 436.5409294828649,
   "end_elevation_m": 435.5619495381714,
   "start_xy": [
    657653.9955134229,
    4674979.7732668165
   ],
   "end_xy": [
    657663.612524083,
    4674982.514269853
   ]
  },
  "min_20m": {
   "gradient_pct": -8.901403293606336,
   "start_distance_m": 312.0,
   "end_distance_m": 332.0,
   "midpoint_distance_m": 322.0,
   "start_elevation_m": 437.0012403260213,
   "end_elevation_m": 435.2209596673,
   "start_xy": [
    657649.1871756105,
    4674978.402178061
   ],
   "end_xy": [
    657668.0126101072,
    4674984.829301899
   ]
  },
  "min_25m": {
   "gradient_pct": -8.551656354213264,
   "start_distance_m": 302.0,
   "end_distance_m": 327.0,
   "midpoint_distance_m": 314.5,
   "start_elevation_m": 437.6998636267247,
   "end_elevation_m": 435.5619495381714,
   "start_xy": [
    657639.5199140725,
    4674975.847545307
   ],
   "end_xy": [
    657663.612524083,
    4674982.514269853
   ]
  },
  "min_50m": {
   "gradient_pct": -6.687679061348376,
   "start_distance_m": 1465.0,
   "end_distance_m": 1515.0,
   "midpoint_distance_m": 1490.0,
   "start_elevation_m": 472.97044003390005,
   "end_elevation_m": 469.62660050322586,
   "start_xy": [
    657562.7676504006,
    4676035.833200756
   ],
   "end_xy": [
    657546.3163772597,
    4676083.016687774
   ]
  },
  "min_100m": {
   "gradient_pct": -5.127131923941931,
   "start_distance_m": 947.0,
   "end_distance_m": 1047.0,
   "midpoint_distance_m": 997.0,
   "start_elevation_m": 472.69172595259965,
   "end_elevation_m": 467.5645940286577,
   "start_xy": [
    657703.0735250877,
    4675545.935256904
   ],
   "end_xy": [
    657693.4465668852,
    4675645.41252349
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.82889993947606,
   "start_distance_m": 136.0,
   "end_distance_m": 138.0,
   "midpoint_distance_m": 137.0,
   "start_elevation_m": 417.9250526356559,
   "end_elevation_m": 418.4816306344454,
   "start_xy": [
    657477.7368516746,
    4674972.142519869
   ],
   "end_xy": [
    657479.5893641473,
    4674971.388731188
   ]
  },
  "max_3m": {
   "gradient_pct": 27.19344287465333,
   "start_distance_m": 135.0,
   "end_distance_m": 138.0,
   "midpoint_distance_m": 136.5,
   "start_elevation_m": 417.6658273482058,
   "end_elevation_m": 418.4816306344454,
   "start_xy": [
    657476.8103243528,
    4674972.5187473465
   ],
   "end_xy": [
    657479.5893641473,
    4674971.388731188
   ]
  }
 },
 "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": 0.019,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.529,
   "obstruction_max_height_m": 28.29,
   "flagged_windows_m": [
    2,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    1310.0,
    1340.0
   ]
  ],
  "review": [],
  "extent": [],
  "suggested_summit_cut_m": 1346.0,
  "trailing_descent_m": 4.6
 },
 "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/ma/USGS_1M_18_x65y468_MA_Western_B24.tif"
  ],
  "calculated_at": "2026-09-03T14:45:10+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/discovered-lane-42-2174-73-0895/discovered-lane-42-2174-73-0895.geojson",
  "run_id": "canopy-all-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, MA_Western_B24 (collected 2023-24)",
  "elevation_tile_ids": [
   "x65y468"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/USGS_LPC_MA_ME_MA_QL2_UTM18_L2_2015_LAS_2018",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.995,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Otis",
  "county": "Massachusetts"
 }
}