{
 "ocl_version": "0.1.0",
 "name": "Fire Tower Road",
 "slug": "fire-tower-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 49.38296960151263,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1461.0,
   "end_distance_m": 1463.0,
   "start_elevation_m": 292.98169611340217,
   "end_elevation_m": 293.9693555054324,
   "min_gradient_pct": -27.065025336875692
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 47.44346712014362,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1461.0,
   "end_distance_m": 1464.0,
   "start_elevation_m": 292.98169611340217,
   "end_elevation_m": 294.4050001270065,
   "min_gradient_pct": -25.56700048347693
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 43.45310957389188,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1460.0,
   "end_distance_m": 1465.0,
   "start_elevation_m": 292.59456741392626,
   "end_elevation_m": 294.76722289262085,
   "min_gradient_pct": -22.004945134732452
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 39.59568242602586,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1458.0,
   "end_distance_m": 1468.0,
   "start_elevation_m": 291.9600052483791,
   "end_elevation_m": 295.9195734909817,
   "min_gradient_pct": -17.547546327920713
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 35.54989427537549,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1456.0,
   "end_distance_m": 1476.0,
   "start_elevation_m": 291.1511237809476,
   "end_elevation_m": 298.2611026360227,
   "min_gradient_pct": -10.038509589008129
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 34.68654824411897,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1455.0,
   "end_distance_m": 1480.0,
   "start_elevation_m": 290.8717862170469,
   "end_elevation_m": 299.54342327807666,
   "min_gradient_pct": -5.760965076292223
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 27.78032233913882,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1452.0,
   "end_distance_m": 1502.0,
   "start_elevation_m": 290.3491776687112,
   "end_elevation_m": 304.2393388382806,
   "min_gradient_pct": -2.47569558222051
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.953041293418384,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1453.0,
   "end_distance_m": 1553.0,
   "start_elevation_m": 290.4957701838263,
   "end_elevation_m": 312.4488114772447,
   "min_gradient_pct": -0.986840976873026
  }
 ],
 "shape": {
  "ascent_concentration": 0.442,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 118.0,
  "shape_class": "sustained"
 },
 "length_m": 2240.900628896575,
 "start_elevation_m": 200.23218266014274,
 "end_elevation_m": 372.14695122066394,
 "endpoint_gain_m": 171.9147685605212,
 "overall_gradient_pct": 7.6716819275102095,
 "accumulated_ascent_m": 186.73807802452862,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 43.45310957389188,
   "start_distance_m": 1460.0,
   "end_distance_m": 1465.0,
   "midpoint_distance_m": 1462.5,
   "start_elevation_m": 292.59456741392626,
   "end_elevation_m": 294.76722289262085,
   "start_xy": [
    487920.7906203033,
    4945170.367347868
   ],
   "end_xy": [
    487921.34867405024,
    4945175.336107195
   ]
  },
  "max_10m": {
   "gradient_pct": 39.59568242602586,
   "start_distance_m": 1458.0,
   "end_distance_m": 1468.0,
   "midpoint_distance_m": 1463.0,
   "start_elevation_m": 291.9600052483791,
   "end_elevation_m": 295.9195734909817,
   "start_xy": [
    487920.5676413414,
    4945168.379816906
   ],
   "end_xy": [
    487921.6833417199,
    4945178.317381332
   ]
  },
  "max_20m": {
   "gradient_pct": 35.54989427537549,
   "start_distance_m": 1456.0,
   "end_distance_m": 1476.0,
   "midpoint_distance_m": 1466.0,
   "start_elevation_m": 291.1511237809476,
   "end_elevation_m": 298.2611026360227,
   "start_xy": [
    487920.34461393487,
    4945166.392291404
   ],
   "end_xy": [
    487922.57563330827,
    4945186.267463171
   ]
  },
  "max_25m": {
   "gradient_pct": 34.68654824411897,
   "start_distance_m": 1455.0,
   "end_distance_m": 1480.0,
   "midpoint_distance_m": 1467.5,
   "start_elevation_m": 290.8717862170469,
   "end_elevation_m": 299.54342327807666,
   "start_xy": [
    487920.2333238389,
    4945165.398503566
   ],
   "end_xy": [
    487923.0216082453,
    4945190.2425231775
   ]
  },
  "max_50m": {
   "gradient_pct": 27.78032233913882,
   "start_distance_m": 1452.0,
   "end_distance_m": 1502.0,
   "midpoint_distance_m": 1477.0,
   "start_elevation_m": 290.3491776687112,
   "end_elevation_m": 304.2393388382806,
   "start_xy": [
    487919.8984080063,
    4945162.417257282
   ],
   "end_xy": [
    487925.47568642447,
    4945212.105217017
   ]
  },
  "max_100m": {
   "gradient_pct": 21.953041293418384,
   "start_distance_m": 1453.0,
   "end_distance_m": 1553.0,
   "midpoint_distance_m": 1503.0,
   "start_elevation_m": 290.4957701838263,
   "end_elevation_m": 312.4488114772447,
   "start_xy": [
    487920.0096674452,
    4945163.411048576
   ],
   "end_xy": [
    487931.1643738341,
    4945262.786951271
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -22.004945134732452,
   "start_distance_m": 947.0,
   "end_distance_m": 952.0,
   "midpoint_distance_m": 949.5,
   "start_elevation_m": 240.50089930740393,
   "end_elevation_m": 239.4006520506673,
   "start_xy": [
    487470.83986879716,
    4944989.252674684
   ],
   "end_xy": [
    487471.8899728423,
    4944994.141159237
   ]
  },
  "min_10m": {
   "gradient_pct": -17.547546327920713,
   "start_distance_m": 945.0,
   "end_distance_m": 955.0,
   "midpoint_distance_m": 950.0,
   "start_elevation_m": 240.80746269579137,
   "end_elevation_m": 239.0527080629993,
   "start_xy": [
    487470.4189719992,
    4944987.297464968
   ],
   "end_xy": [
    487472.5209500005,
    4944997.07405286
   ]
  },
  "min_20m": {
   "gradient_pct": -10.038509589008129,
   "start_distance_m": 940.0,
   "end_distance_m": 960.0,
   "midpoint_distance_m": 950.0,
   "start_elevation_m": 240.83674801038148,
   "end_elevation_m": 238.82904609257986,
   "start_xy": [
    487469.3689315127,
    4944982.408966759
   ],
   "end_xy": [
    487474.8140413363,
    4945000.471104457
   ]
  },
  "min_25m": {
   "gradient_pct": -5.760965076292223,
   "start_distance_m": 1997.0,
   "end_distance_m": 2022.0,
   "midpoint_distance_m": 2009.5,
   "start_elevation_m": 364.8711237410819,
   "end_elevation_m": 363.4308824720088,
   "start_xy": [
    488011.6942692578,
    4945650.456385987
   ],
   "end_xy": [
    488030.2843766002,
    4945638.726094683
   ]
  },
  "min_50m": {
   "gradient_pct": -2.47569558222051,
   "start_distance_m": 742.0,
   "end_distance_m": 792.0,
   "midpoint_distance_m": 767.0,
   "start_elevation_m": 230.71635831471286,
   "end_elevation_m": 229.4785105236026,
   "start_xy": [
    487295.0167503299,
    4944966.532456954
   ],
   "end_xy": [
    487344.71577399486,
    4944967.653565544
   ]
  },
  "min_100m": {
   "gradient_pct": -0.986840976873026,
   "start_distance_m": 691.0,
   "end_distance_m": 791.0,
   "midpoint_distance_m": 741.0,
   "start_elevation_m": 230.41019864575483,
   "end_elevation_m": 229.4233576688818,
   "start_xy": [
    487245.01798822073,
    4944956.476443099
   ],
   "end_xy": [
    487343.71717834426,
    4944967.706544092
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 49.38296960151263,
   "start_distance_m": 1461.0,
   "end_distance_m": 1463.0,
   "midpoint_distance_m": 1462.0,
   "start_elevation_m": 292.98169611340217,
   "end_elevation_m": 293.9693555054324,
   "start_xy": [
    487920.9023884388,
    4945171.361082056
   ],
   "end_xy": [
    487921.12533645105,
    4945173.348616508
   ]
  },
  "max_3m": {
   "gradient_pct": 47.44346712014362,
   "start_distance_m": 1461.0,
   "end_distance_m": 1464.0,
   "midpoint_distance_m": 1462.5,
   "start_elevation_m": 292.98169611340217,
   "end_elevation_m": 294.4050001270065,
   "start_xy": [
    487920.9023884388,
    4945171.361082056
   ],
   "end_xy": [
    487921.23662667186,
    4945174.342404331
   ]
  }
 },
 "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": 0.096,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.738,
   "obstruction_max_height_m": 30.23,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    850.0,
    880.0
   ],
   [
    960.0,
    990.0
   ],
   [
    1070.0,
    1150.0
   ],
   [
    1210.0,
    1240.0
   ],
   [
    1250.0,
    1290.0
   ]
  ],
  "review": [],
  "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_x48y495_ME_MidCoast_2021_B21.tif"
  ],
  "calculated_at": "2026-09-03T08:37:31+00:00",
  "road_source": "/mnt/HC_Volume_106727764/site-corpus-fresh/us/fire-tower-road/fire-tower-road.geojson",
  "run_id": "canopy-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_MidCoast_2021_B21 (collected 2021)",
  "elevation_tile_ids": [
   "x48y495"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/ME_MidCoast_2_2021",
   "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.html"
 },
 "area": {
  "place": "Dixmont",
  "county": "Maine"
 }
}