{
 "ocl_version": "0.1.0",
 "name": "South Whitman School Road",
 "slug": "south-whitman-school-road",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 48.39439442199307,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2964.0,
   "end_distance_m": 2966.0,
   "start_elevation_m": 389.3256922912438,
   "end_elevation_m": 390.29358017968366,
   "min_gradient_pct": -28.78872268946111
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 47.1128198317975,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2964.0,
   "end_distance_m": 2967.0,
   "start_elevation_m": 389.3256922912438,
   "end_elevation_m": 390.7390768861977,
   "min_gradient_pct": -19.660866063611593
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 42.466451014781796,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2963.0,
   "end_distance_m": 2968.0,
   "start_elevation_m": 388.92580872493636,
   "end_elevation_m": 391.04913127567545,
   "min_gradient_pct": -19.037246649636472
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 34.14451152332845,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2962.0,
   "end_distance_m": 2972.0,
   "start_elevation_m": 388.65488913714944,
   "end_elevation_m": 392.0693402894823,
   "min_gradient_pct": -13.971662216093819
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.110178140955384,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2962.0,
   "end_distance_m": 2982.0,
   "start_elevation_m": 388.65488913714944,
   "end_elevation_m": 393.6769247653405,
   "min_gradient_pct": -8.349510540092524
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.55980004226626,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2961.0,
   "end_distance_m": 2986.0,
   "start_elevation_m": 388.53294558231283,
   "end_elevation_m": 394.1728955928794,
   "min_gradient_pct": -7.803334890910492
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.191405719944896,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2950.0,
   "end_distance_m": 3000.0,
   "start_elevation_m": 387.4971113145731,
   "end_elevation_m": 396.09281417454554,
   "min_gradient_pct": -6.556738703452083
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 11.908360436374608,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1860.0,
   "end_distance_m": 1960.0,
   "start_elevation_m": 347.02565241307184,
   "end_elevation_m": 358.93401284944645,
   "min_gradient_pct": -4.376929005878594
  }
 ],
 "shape": {
  "ascent_concentration": 0.311,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 114.0,
  "shape_class": "sustained"
 },
 "length_m": 3051.727838860474,
 "start_elevation_m": 261.4504323120176,
 "end_elevation_m": 398.87073987304706,
 "endpoint_gain_m": 137.42030756102946,
 "overall_gradient_pct": 4.5030328658778,
 "accumulated_ascent_m": 157.05448756995918,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 42.466451014781796,
   "start_distance_m": 2963.0,
   "end_distance_m": 2968.0,
   "midpoint_distance_m": 2965.5,
   "start_elevation_m": 388.92580872493636,
   "end_elevation_m": 391.04913127567545,
   "start_xy": [
    387246.0701690742,
    4900865.53762132
   ],
   "end_xy": [
    387241.2293404415,
    4900864.286073461
   ]
  },
  "max_10m": {
   "gradient_pct": 34.14451152332845,
   "start_distance_m": 2962.0,
   "end_distance_m": 2972.0,
   "midpoint_distance_m": 2967.0,
   "start_elevation_m": 388.65488913714944,
   "end_elevation_m": 392.0693402894823,
   "start_xy": [
    387247.0383006007,
    4900865.788063171
   ],
   "end_xy": [
    387237.3567345022,
    4900863.2846144065
   ]
  },
  "max_20m": {
   "gradient_pct": 25.110178140955384,
   "start_distance_m": 2962.0,
   "end_distance_m": 2982.0,
   "midpoint_distance_m": 2972.0,
   "start_elevation_m": 388.65488913714944,
   "end_elevation_m": 393.6769247653405,
   "start_xy": [
    387247.0383006007,
    4900865.788063171
   ],
   "end_xy": [
    387227.6752015254,
    4900860.781037584
   ]
  },
  "max_25m": {
   "gradient_pct": 22.55980004226626,
   "start_distance_m": 2961.0,
   "end_distance_m": 2986.0,
   "midpoint_distance_m": 2973.5,
   "start_elevation_m": 388.53294558231283,
   "end_elevation_m": 394.1728955928794,
   "start_xy": [
    387248.00638738304,
    4900866.038677926
   ],
   "end_xy": [
    387223.8025585721,
    4900859.779722316
   ]
  },
  "max_50m": {
   "gradient_pct": 17.191405719944896,
   "start_distance_m": 2950.0,
   "end_distance_m": 3000.0,
   "midpoint_distance_m": 2975.0,
   "start_elevation_m": 387.4971113145731,
   "end_elevation_m": 396.09281417454554,
   "start_xy": [
    387257.726342477,
    4900870.894434919
   ],
   "end_xy": [
    387210.24841992534,
    4900856.274686365
   ]
  },
  "max_100m": {
   "gradient_pct": 11.908360436374608,
   "start_distance_m": 1860.0,
   "end_distance_m": 1960.0,
   "midpoint_distance_m": 1910.0,
   "start_elevation_m": 347.02565241307184,
   "end_elevation_m": 358.93401284944645,
   "start_xy": [
    386780.6692138123,
    4901665.496678001
   ],
   "end_xy": [
    386873.4070702877,
    4901628.244130153
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -19.037246649636472,
   "start_distance_m": 2885.0,
   "end_distance_m": 2890.0,
   "midpoint_distance_m": 2887.5,
   "start_elevation_m": 389.05915300149525,
   "end_elevation_m": 388.1072906690134,
   "start_xy": [
    387295.9963215427,
    4900919.3158847615
   ],
   "end_xy": [
    387294.33065158775,
    4900914.601527749
   ]
  },
  "min_10m": {
   "gradient_pct": -13.971662216093819,
   "start_distance_m": 2884.0,
   "end_distance_m": 2894.0,
   "midpoint_distance_m": 2889.0,
   "start_elevation_m": 389.1906484655101,
   "end_elevation_m": 387.7934822439007,
   "start_xy": [
    387295.9332967569,
    4900920.268920702
   ],
   "end_xy": [
    387292.9925859081,
    4900910.83196869
   ]
  },
  "min_20m": {
   "gradient_pct": -8.349510540092524,
   "start_distance_m": 2880.0,
   "end_distance_m": 2900.0,
   "midpoint_distance_m": 2890.0,
   "start_elevation_m": 389.27516203625026,
   "end_elevation_m": 387.60525992823176,
   "start_xy": [
    387294.7697685662,
    4900924.095956188
   ],
   "end_xy": [
    387290.9851094394,
    4900905.177763749
   ]
  },
  "min_25m": {
   "gradient_pct": -7.803334890910492,
   "start_distance_m": 1596.0,
   "end_distance_m": 1621.0,
   "midpoint_distance_m": 1608.5,
   "start_elevation_m": 344.41057571876644,
   "end_elevation_m": 342.4597419960388,
   "start_xy": [
    386572.5079839659,
    4901823.6453755945
   ],
   "end_xy": [
    386593.58410611056,
    4901810.199297642
   ]
  },
  "min_50m": {
   "gradient_pct": -6.556738703452083,
   "start_distance_m": 1581.0,
   "end_distance_m": 1631.0,
   "midpoint_distance_m": 1606.0,
   "start_elevation_m": 345.26403626083635,
   "end_elevation_m": 341.9856669091103,
   "start_xy": [
    386559.86192304565,
    4901831.712414474
   ],
   "end_xy": [
    386602.0143002824,
    4901804.82046708
   ]
  },
  "min_100m": {
   "gradient_pct": -4.376929005878594,
   "start_distance_m": 2825.0,
   "end_distance_m": 2925.0,
   "midpoint_distance_m": 2875.0,
   "start_elevation_m": 390.38697802291813,
   "end_elevation_m": 386.01004901703953,
   "start_xy": [
    387279.03239445685,
    4900976.794247742
   ],
   "end_xy": [
    387278.5072686062,
    4900884.792385493
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 48.39439442199307,
   "start_distance_m": 2964.0,
   "end_distance_m": 2966.0,
   "midpoint_distance_m": 2965.0,
   "start_elevation_m": 389.3256922912438,
   "end_elevation_m": 390.29358017968366,
   "start_xy": [
    387245.1020822371,
    4900865.287006777
   ],
   "end_xy": [
    387243.16565762245,
    4900864.7867479995
   ]
  },
  "max_3m": {
   "gradient_pct": 47.1128198317975,
   "start_distance_m": 2964.0,
   "end_distance_m": 2967.0,
   "midpoint_distance_m": 2965.5,
   "start_elevation_m": 389.3256922912438,
   "end_elevation_m": 390.7390768861977,
   "start_xy": [
    387245.1020822371,
    4900865.287006777
   ],
   "end_xy": [
    387242.1975709078,
    4900864.536132983
   ]
  }
 },
 "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": [
   "short_window_divergence"
  ],
  "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_x38y491_ME_WesternMtns_B24.tif"
  ],
  "calculated_at": "2026-09-03T21:07:42+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/south-whitman-school-road/south-whitman-school-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_WesternMtns_B24 (collected 2024)",
  "elevation_tile_ids": [
   "x38y491"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: ME_SouthCoastal_1_2020: no corridor points fetched; USGS_LPC_ME_NRCS_Lot4_2013_LAS_2015: no corridor points fetched; ME_SouthCentral_1_B22: no corridor points fetched",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Buckfield",
  "county": "Maine"
 }
}