{
 "ocl_version": "0.1.0",
 "name": "Jobey Hill Road",
 "slug": "jobey-hill-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 42.72315995166025,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 311.0,
   "end_distance_m": 313.0,
   "start_elevation_m": 227.50262881782368,
   "end_elevation_m": 228.35709201685688,
   "min_gradient_pct": -9.905538805105607
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 41.75469101504916,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 311.0,
   "end_distance_m": 314.0,
   "start_elevation_m": 227.50262881782368,
   "end_elevation_m": 228.75526954827515,
   "min_gradient_pct": -9.008709939122165
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 40.05367694125425,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 310.0,
   "end_distance_m": 315.0,
   "start_elevation_m": 227.1229468060256,
   "end_elevation_m": 229.1256306530883,
   "min_gradient_pct": -7.5125690625964126
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 35.73358980457925,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 306.0,
   "end_distance_m": 316.0,
   "start_elevation_m": 225.90401782941444,
   "end_elevation_m": 229.47737680987237,
   "min_gradient_pct": -6.5140493421117185
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 29.18937057426703,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 297.0,
   "end_distance_m": 317.0,
   "start_elevation_m": 223.9029133567063,
   "end_elevation_m": 229.7407874715597,
   "min_gradient_pct": -3.990576301426927
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 26.934256066834905,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 300.0,
   "end_distance_m": 325.0,
   "start_elevation_m": 224.45770411485705,
   "end_elevation_m": 231.19126813156578,
   "min_gradient_pct": -3.8215775708849833
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.400304545041134,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 267.0,
   "end_distance_m": 317.0,
   "start_elevation_m": 218.04063519903914,
   "end_elevation_m": 229.7407874715597,
   "min_gradient_pct": -1.866598950684363
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.176445273407495,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 216.0,
   "end_distance_m": 316.0,
   "start_elevation_m": 209.30093153646487,
   "end_elevation_m": 229.47737680987237,
   "min_gradient_pct": 4.0061171627794465
  }
 ],
 "shape": {
  "ascent_concentration": 0.499,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 145.0,
  "shape_class": "stepped"
 },
 "length_m": 509.00000000008424,
 "start_elevation_m": 195.7640349705964,
 "end_elevation_m": 242.6116676161842,
 "endpoint_gain_m": 46.847632645587794,
 "overall_gradient_pct": 9.203857101292739,
 "accumulated_ascent_m": 49.52733738344281,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 40.05367694125425,
   "start_distance_m": 310.0,
   "end_distance_m": 315.0,
   "midpoint_distance_m": 312.5,
   "start_elevation_m": 227.1229468060256,
   "end_elevation_m": 229.1256306530883,
   "start_xy": [
    453750.75039812963,
    4988482.812831977
   ],
   "end_xy": [
    453755.720521069,
    4988483.358613956
   ]
  },
  "max_10m": {
   "gradient_pct": 35.73358980457925,
   "start_distance_m": 306.0,
   "end_distance_m": 316.0,
   "midpoint_distance_m": 311.0,
   "start_elevation_m": 225.90401782941444,
   "end_elevation_m": 229.47737680987237,
   "start_xy": [
    453746.77429977816,
    4988482.376206395
   ],
   "end_xy": [
    453756.71454565687,
    4988483.467770351
   ]
  },
  "max_20m": {
   "gradient_pct": 29.18937057426703,
   "start_distance_m": 297.0,
   "end_distance_m": 317.0,
   "midpoint_distance_m": 307.0,
   "start_elevation_m": 223.9029133567063,
   "end_elevation_m": 229.7407874715597,
   "start_xy": [
    453737.82807848725,
    4988481.393798835
   ],
   "end_xy": [
    453757.7085702448,
    4988483.576926746
   ]
  },
  "max_25m": {
   "gradient_pct": 26.934256066834905,
   "start_distance_m": 300.0,
   "end_distance_m": 325.0,
   "midpoint_distance_m": 312.5,
   "start_elevation_m": 224.45770411485705,
   "end_elevation_m": 231.19126813156578,
   "start_xy": [
    453740.81015225087,
    4988481.7212680215
   ],
   "end_xy": [
    453765.6607669477,
    4988484.450177912
   ]
  },
  "max_50m": {
   "gradient_pct": 23.400304545041134,
   "start_distance_m": 267.0,
   "end_distance_m": 317.0,
   "midpoint_distance_m": 292.0,
   "start_elevation_m": 218.04063519903914,
   "end_elevation_m": 229.7407874715597,
   "start_xy": [
    453708.007340851,
    4988478.119106967
   ],
   "end_xy": [
    453757.7085702448,
    4988483.576926746
   ]
  },
  "max_100m": {
   "gradient_pct": 20.176445273407495,
   "start_distance_m": 216.0,
   "end_distance_m": 316.0,
   "midpoint_distance_m": 266.0,
   "start_elevation_m": 209.30093153646487,
   "end_elevation_m": 229.47737680987237,
   "start_xy": [
    453657.3866870117,
    4988471.985563886
   ],
   "end_xy": [
    453756.71454565687,
    4988483.467770351
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.5125690625964126,
   "start_distance_m": 186.0,
   "end_distance_m": 191.0,
   "midpoint_distance_m": 188.5,
   "start_elevation_m": 207.84441783962566,
   "end_elevation_m": 207.46878938649584,
   "start_xy": [
    453627.73467489134,
    4988467.42944962
   ],
   "end_xy": [
    453632.67667691136,
    4988468.188801997
   ]
  },
  "min_10m": {
   "gradient_pct": -6.5140493421117185,
   "start_distance_m": 69.0,
   "end_distance_m": 79.0,
   "midpoint_distance_m": 74.0,
   "start_elevation_m": 202.86461704848463,
   "end_elevation_m": 202.21321211427346,
   "start_xy": [
    453512.091827622,
    4988449.660603978
   ],
   "end_xy": [
    453521.9758316621,
    4988451.179308734
   ]
  },
  "min_20m": {
   "gradient_pct": -3.990576301426927,
   "start_distance_m": 69.0,
   "end_distance_m": 89.0,
   "midpoint_distance_m": 79.0,
   "start_elevation_m": 202.86461704848463,
   "end_elevation_m": 202.06650178819925,
   "start_xy": [
    453512.091827622,
    4988449.660603978
   ],
   "end_xy": [
    453531.85983570217,
    4988452.698013489
   ]
  },
  "min_25m": {
   "gradient_pct": -3.8215775708849833,
   "start_distance_m": 69.0,
   "end_distance_m": 94.0,
   "midpoint_distance_m": 81.5,
   "start_elevation_m": 202.86461704848463,
   "end_elevation_m": 201.9092226557634,
   "start_xy": [
    453512.091827622,
    4988449.660603978
   ],
   "end_xy": [
    453536.80183772225,
    4988453.457365867
   ]
  },
  "min_50m": {
   "gradient_pct": -1.866598950684363,
   "start_distance_m": 68.0,
   "end_distance_m": 118.0,
   "midpoint_distance_m": 93.0,
   "start_elevation_m": 202.8505880002463,
   "end_elevation_m": 201.9172885249041,
   "start_xy": [
    453511.1034272179,
    4988449.508733503
   ],
   "end_xy": [
    453560.5234474185,
    4988457.102257281
   ]
  },
  "min_100m": {
   "gradient_pct": 4.0061171627794465,
   "start_distance_m": 68.0,
   "end_distance_m": 168.0,
   "midpoint_distance_m": 118.0,
   "start_elevation_m": 202.8505880002463,
   "end_elevation_m": 206.85670516302574,
   "start_xy": [
    453511.1034272179,
    4988449.508733503
   ],
   "end_xy": [
    453609.94346761913,
    4988464.69578106
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 42.72315995166025,
   "start_distance_m": 311.0,
   "end_distance_m": 313.0,
   "midpoint_distance_m": 312.0,
   "start_elevation_m": 227.50262881782368,
   "end_elevation_m": 228.35709201685688,
   "start_xy": [
    453751.7444227175,
    4988482.921988374
   ],
   "end_xy": [
    453753.73247189325,
    4988483.140301164
   ]
  },
  "max_3m": {
   "gradient_pct": 41.75469101504916,
   "start_distance_m": 311.0,
   "end_distance_m": 314.0,
   "midpoint_distance_m": 312.5,
   "start_elevation_m": 227.50262881782368,
   "end_elevation_m": 228.75526954827515,
   "start_xy": [
    453751.7444227175,
    4988482.921988374
   ],
   "end_xy": [
    453754.7264964811,
    4988483.2494575605
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.906,
   "obstruction_max_height_m": 22.56,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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_x45y499_ME_MidCentral_B23.tif"
  ],
  "calculated_at": "2026-09-03T22:46:41+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": "extent-trim-v2-260903",
  "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": [
   "x45y499"
  ],
  "route_cut_m": 509.0,
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/ME_MidCentral_1_B23",
   "ept_crs": "EPSG:3857",
   "station_coverage": 1.0,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Wellington",
  "county": "Maine"
 }
}