{
 "ocl_version": "0.1.0",
 "name": "Upper Dedham Road",
 "slug": "upper-dedham-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 44.15197171143248,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1407.0,
   "end_distance_m": 1409.0,
   "start_elevation_m": 114.09243690811967,
   "end_elevation_m": 114.97547634234832,
   "min_gradient_pct": -37.22759093757162
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 42.362302644026784,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1406.0,
   "end_distance_m": 1409.0,
   "start_elevation_m": 113.70460726302751,
   "end_elevation_m": 114.97547634234832,
   "min_gradient_pct": -33.22800253381549
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 38.97464821792909,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1405.0,
   "end_distance_m": 1410.0,
   "start_elevation_m": 113.3764843759033,
   "end_elevation_m": 115.32521678679976,
   "min_gradient_pct": -22.292516834318974
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 34.0334503705067,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1401.0,
   "end_distance_m": 1411.0,
   "start_elevation_m": 112.22993734404784,
   "end_elevation_m": 115.63328238109851,
   "min_gradient_pct": -13.389155832445567
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.77389869234644,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1391.0,
   "end_distance_m": 1411.0,
   "start_elevation_m": 110.47850264262922,
   "end_elevation_m": 115.63328238109851,
   "min_gradient_pct": -11.02627704087297
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.268001367101935,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1387.0,
   "end_distance_m": 1412.0,
   "start_elevation_m": 109.98151582613588,
   "end_elevation_m": 115.79851616791136,
   "min_gradient_pct": -10.911638561025597
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.56035960819841,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1395.0,
   "end_distance_m": 1445.0,
   "start_elevation_m": 110.96569364925213,
   "end_elevation_m": 120.24587345335134,
   "min_gradient_pct": -9.799194793263553
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.683432874436207,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1388.0,
   "end_distance_m": 1488.0,
   "start_elevation_m": 110.07882313657868,
   "end_elevation_m": 125.76225601101488,
   "min_gradient_pct": -9.247931237277498
  }
 ],
 "shape": {
  "ascent_concentration": 0.388,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 98.0,
  "shape_class": "sustained"
 },
 "length_m": 3941.0608314516453,
 "start_elevation_m": 69.13247183499995,
 "end_elevation_m": 152.3209287371173,
 "endpoint_gain_m": 83.18845690211735,
 "overall_gradient_pct": 2.1108138255119453,
 "accumulated_ascent_m": 147.55199633471602,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 38.97464821792909,
   "start_distance_m": 1405.0,
   "end_distance_m": 1410.0,
   "midpoint_distance_m": 1407.5,
   "start_elevation_m": 113.3764843759033,
   "end_elevation_m": 115.32521678679976,
   "start_xy": [
    528908.3112531955,
    4951173.562379426
   ],
   "end_xy": [
    528906.3930845613,
    4951168.944953475
   ]
  },
  "max_10m": {
   "gradient_pct": 34.0334503705067,
   "start_distance_m": 1401.0,
   "end_distance_m": 1411.0,
   "midpoint_distance_m": 1406.0,
   "start_elevation_m": 112.22993734404784,
   "end_elevation_m": 115.63328238109851,
   "start_xy": [
    528909.8453280852,
    4951177.256511287
   ],
   "end_xy": [
    528906.0093308669,
    4951168.02151799
   ]
  },
  "max_20m": {
   "gradient_pct": 25.77389869234644,
   "start_distance_m": 1391.0,
   "end_distance_m": 1411.0,
   "midpoint_distance_m": 1401.0,
   "start_elevation_m": 110.47850264262922,
   "end_elevation_m": 115.63328238109851,
   "start_xy": [
    528913.6813253039,
    4951186.4915045835
   ],
   "end_xy": [
    528906.0093308669,
    4951168.02151799
   ]
  },
  "max_25m": {
   "gradient_pct": 23.268001367101935,
   "start_distance_m": 1387.0,
   "end_distance_m": 1412.0,
   "midpoint_distance_m": 1399.5,
   "start_elevation_m": 109.98151582613588,
   "end_elevation_m": 115.79851616791136,
   "start_xy": [
    528915.2153831221,
    4951190.185643921
   ],
   "end_xy": [
    528905.6260556147,
    4951167.097883822
   ]
  },
  "max_50m": {
   "gradient_pct": 18.56035960819841,
   "start_distance_m": 1395.0,
   "end_distance_m": 1445.0,
   "midpoint_distance_m": 1420.0,
   "start_elevation_m": 110.96569364925213,
   "end_elevation_m": 120.24587345335134,
   "start_xy": [
    528912.1472504081,
    4951182.797372725
   ],
   "end_xy": [
    528894.9356170613,
    4951135.896270917
   ]
  },
  "max_100m": {
   "gradient_pct": 15.683432874436207,
   "start_distance_m": 1388.0,
   "end_distance_m": 1488.0,
   "midpoint_distance_m": 1438.0,
   "start_elevation_m": 110.07882313657868,
   "end_elevation_m": 125.76225601101488,
   "start_xy": [
    528914.8321079375,
    4951189.262009725
   ],
   "end_xy": [
    528881.6917244787,
    4951094.98662331
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -22.292516834318974,
   "start_distance_m": 114.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 116.5,
   "start_elevation_m": 73.6607648550443,
   "end_elevation_m": 72.54613901332836,
   "start_xy": [
    529258.2940290319,
    4952353.848803339
   ],
   "end_xy": [
    529259.1519840704,
    4952348.930053998
   ]
  },
  "min_10m": {
   "gradient_pct": -13.389155832445567,
   "start_distance_m": 2406.0,
   "end_distance_m": 2416.0,
   "midpoint_distance_m": 2411.0,
   "start_elevation_m": 134.0584007684353,
   "end_elevation_m": 132.71948518519073,
   "start_xy": [
    528549.5946512512,
    4950245.379277107
   ],
   "end_xy": [
    528545.8686791598,
    4950236.099346542
   ]
  },
  "min_20m": {
   "gradient_pct": -11.02627704087297,
   "start_distance_m": 2399.0,
   "end_distance_m": 2419.0,
   "midpoint_distance_m": 2409.0,
   "start_elevation_m": 134.66477539227247,
   "end_elevation_m": 132.45951998409788,
   "start_xy": [
    528552.202687999,
    4950251.875286192
   ],
   "end_xy": [
    528544.750675555,
    4950233.315452511
   ]
  },
  "min_25m": {
   "gradient_pct": -10.911638561025597,
   "start_distance_m": 2403.0,
   "end_distance_m": 2428.0,
   "midpoint_distance_m": 2415.5,
   "start_elevation_m": 134.34720831855321,
   "end_elevation_m": 131.61929867829681,
   "start_xy": [
    528550.7126150937,
    4950248.16318715
   ],
   "end_xy": [
    528541.3576096038,
    4950224.979566295
   ]
  },
  "min_50m": {
   "gradient_pct": -9.799194793263553,
   "start_distance_m": 2396.0,
   "end_distance_m": 2446.0,
   "midpoint_distance_m": 2421.0,
   "start_elevation_m": 134.83218301096025,
   "end_elevation_m": 129.93258561432847,
   "start_xy": [
    528553.3206233426,
    4950254.659207674
   ],
   "end_xy": [
    528534.566651221,
    4950208.309748759
   ]
  },
  "min_100m": {
   "gradient_pct": -9.247931237277498,
   "start_distance_m": 2403.0,
   "end_distance_m": 2503.0,
   "midpoint_distance_m": 2453.0,
   "start_elevation_m": 134.34720831855321,
   "end_elevation_m": 125.09927708127572,
   "start_xy": [
    528550.7126150937,
    4950248.16318715
   ],
   "end_xy": [
    528513.0597423497,
    4950155.522892349
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 44.15197171143248,
   "start_distance_m": 1407.0,
   "end_distance_m": 1409.0,
   "midpoint_distance_m": 1408.0,
   "start_elevation_m": 114.09243690811967,
   "end_elevation_m": 114.97547634234832,
   "start_xy": [
    528907.5442243582,
    4951171.715310111
   ],
   "end_xy": [
    528906.7763597759,
    4951169.868587659
   ]
  },
  "max_3m": {
   "gradient_pct": 42.362302644026784,
   "start_distance_m": 1406.0,
   "end_distance_m": 1409.0,
   "midpoint_distance_m": 1407.5,
   "start_elevation_m": 113.70460726302751,
   "end_elevation_m": 114.97547634234832,
   "start_xy": [
    528907.9271597781,
    4951172.639085208
   ],
   "end_xy": [
    528906.7763597759,
    4951169.868587659
   ]
  }
 },
 "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": 0.036,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.297,
   "obstruction_max_height_m": 27.39,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    30.0,
    60.0
   ],
   [
    110.0,
    190.0
   ],
   [
    1310.0,
    1340.0
   ]
  ],
  "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_x52y495_ME_MidCentral_B23.tif",
   "data/cache/usa/me/USGS_1M_19_x52y496_ME_MidCentral_B23.tif"
  ],
  "calculated_at": "2026-09-03T21:38:30+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/upper-dedham-road/upper-dedham-road.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, ME_MidCentral_B23 (collected 2023)",
  "elevation_tile_ids": [
   "x52y495",
   "x52y496"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/ME_ME_MA_QL2_L1_2015",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.99,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Holden",
  "county": "Maine"
 }
}