{
 "ocl_version": "0.1.0",
 "name": "Lyon Road",
 "slug": "lyon-road-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 20.54106172230661,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 650.0,
   "end_distance_m": 652.0,
   "start_elevation_m": 487.37481865452486,
   "end_elevation_m": 487.785639888971,
   "min_gradient_pct": -4.6157888838450845
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 20.3016005416013,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 649.0,
   "end_distance_m": 652.0,
   "start_elevation_m": 487.17659187272295,
   "end_elevation_m": 487.785639888971,
   "min_gradient_pct": -4.395854406722795
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.03769905834133,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 641.0,
   "end_distance_m": 646.0,
   "start_elevation_m": 485.5995575552329,
   "end_elevation_m": 486.60144250814994,
   "min_gradient_pct": -4.269583137516975
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 19.834366624936592,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 642.0,
   "end_distance_m": 652.0,
   "start_elevation_m": 485.80220322647733,
   "end_elevation_m": 487.785639888971,
   "min_gradient_pct": -4.127383842186987
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.601234286607507,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 640.0,
   "end_distance_m": 660.0,
   "start_elevation_m": 485.4086106164914,
   "end_elevation_m": 489.3288574738129,
   "min_gradient_pct": -4.022389292557307
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 19.509048573373775,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 633.0,
   "end_distance_m": 658.0,
   "start_elevation_m": 484.07137478958936,
   "end_elevation_m": 488.9486369329328,
   "min_gradient_pct": -3.9114455157673547
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.20318707387605,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 617.0,
   "end_distance_m": 667.0,
   "start_elevation_m": 481.0518518287963,
   "end_elevation_m": 490.65344536573434,
   "min_gradient_pct": -3.2076016646415155
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.750841937705843,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 570.0,
   "end_distance_m": 670.0,
   "start_elevation_m": 472.46805562160284,
   "end_elevation_m": 491.2188975593087,
   "min_gradient_pct": -1.2377074826898706
  }
 ],
 "shape": {
  "ascent_concentration": 0.322,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 455.0,
  "shape_class": "sustained"
 },
 "length_m": 1535.944419189431,
 "start_elevation_m": 418.2121513555909,
 "end_elevation_m": 601.6473945834872,
 "endpoint_gain_m": 183.4352432278963,
 "overall_gradient_pct": 11.9428308040405,
 "accumulated_ascent_m": 185.1858704402511,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.03769905834133,
   "start_distance_m": 641.0,
   "end_distance_m": 646.0,
   "midpoint_distance_m": 643.5,
   "start_elevation_m": 485.5995575552329,
   "end_elevation_m": 486.60144250814994,
   "start_xy": [
    299608.21214260976,
    4716306.81896027
   ],
   "end_xy": [
    299610.8809086168,
    4716302.59075876
   ]
  },
  "max_10m": {
   "gradient_pct": 19.834366624936592,
   "start_distance_m": 642.0,
   "end_distance_m": 652.0,
   "midpoint_distance_m": 647.0,
   "start_elevation_m": 485.80220322647733,
   "end_elevation_m": 487.785639888971,
   "start_xy": [
    299608.7458958111,
    4716305.973319967
   ],
   "end_xy": [
    299614.0834278253,
    4716297.51691695
   ]
  },
  "max_20m": {
   "gradient_pct": 19.601234286607507,
   "start_distance_m": 640.0,
   "end_distance_m": 660.0,
   "midpoint_distance_m": 650.0,
   "start_elevation_m": 485.4086106164914,
   "end_elevation_m": 489.3288574738129,
   "start_xy": [
    299607.67838940833,
    4716307.664600572
   ],
   "end_xy": [
    299619.32773754327,
    4716291.48097627
   ]
  },
  "max_25m": {
   "gradient_pct": 19.509048573373775,
   "start_distance_m": 633.0,
   "end_distance_m": 658.0,
   "midpoint_distance_m": 645.5,
   "start_elevation_m": 484.07137478958936,
   "end_elevation_m": 488.9486369329328,
   "start_xy": [
    299603.9421169984,
    4716313.584082684
   ],
   "end_xy": [
    299618.00602941524,
    4716292.982005125
   ]
  },
  "max_50m": {
   "gradient_pct": 19.20318707387605,
   "start_distance_m": 617.0,
   "end_distance_m": 667.0,
   "midpoint_distance_m": 642.0,
   "start_elevation_m": 481.0518518287963,
   "end_elevation_m": 490.65344536573434,
   "start_xy": [
    299597.0493766191,
    4716327.978321389
   ],
   "end_xy": [
    299624.1947005447,
    4716286.453024159
   ]
  },
  "max_100m": {
   "gradient_pct": 18.750841937705843,
   "start_distance_m": 570.0,
   "end_distance_m": 670.0,
   "midpoint_distance_m": 620.0,
   "start_elevation_m": 472.46805562160284,
   "end_elevation_m": 491.2188975593087,
   "start_xy": [
    299579.8398411654,
    4716371.668672687
   ],
   "end_xy": [
    299626.3112142108,
    4716284.326908005
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.269583137516975,
   "start_distance_m": 174.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 176.5,
   "start_elevation_m": 426.05432742706915,
   "end_elevation_m": 425.8408482701933,
   "start_xy": [
    299455.6369571957,
    4716719.473230747
   ],
   "end_xy": [
    299460.6295058855,
    4716719.200361583
   ]
  },
  "min_10m": {
   "gradient_pct": -4.127383842186987,
   "start_distance_m": 166.0,
   "end_distance_m": 176.0,
   "midpoint_distance_m": 171.0,
   "start_elevation_m": 426.37475003361095,
   "end_elevation_m": 425.96201164939225,
   "start_xy": [
    299447.6488792921,
    4716719.909821407
   ],
   "end_xy": [
    299457.6339766716,
    4716719.3640830815
   ]
  },
  "min_20m": {
   "gradient_pct": -4.022389292557307,
   "start_distance_m": 163.0,
   "end_distance_m": 183.0,
   "midpoint_distance_m": 173.0,
   "start_elevation_m": 426.492978571167,
   "end_elevation_m": 425.6885007126555,
   "start_xy": [
    299444.6533500782,
    4716720.073542905
   ],
   "end_xy": [
    299464.62354483735,
    4716718.982066253
   ]
  },
  "min_25m": {
   "gradient_pct": -3.9114455157673547,
   "start_distance_m": 160.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 172.5,
   "start_elevation_m": 426.5979222766638,
   "end_elevation_m": 425.62006089772194,
   "start_xy": [
    299441.6578208643,
    4716720.237264403
   ],
   "end_xy": [
    299466.62056431326,
    4716718.872918588
   ]
  },
  "min_50m": {
   "gradient_pct": -3.2076016646415155,
   "start_distance_m": 140.0,
   "end_distance_m": 190.0,
   "midpoint_distance_m": 165.0,
   "start_elevation_m": 427.0990956810573,
   "end_elevation_m": 425.49529484873653,
   "start_xy": [
    299421.68762610515,
    4716721.328741055
   ],
   "end_xy": [
    299471.613113003,
    4716718.600049425
   ]
  },
  "min_100m": {
   "gradient_pct": -1.2377074826898706,
   "start_distance_m": 118.0,
   "end_distance_m": 218.0,
   "midpoint_distance_m": 168.0,
   "start_elevation_m": 426.89418161816144,
   "end_elevation_m": 425.65647413547157,
   "start_xy": [
    299399.7067097689,
    4716722.221026762
   ],
   "end_xy": [
    299496.13251725613,
    4716712.305534974
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 20.54106172230661,
   "start_distance_m": 650.0,
   "end_distance_m": 652.0,
   "midpoint_distance_m": 651.0,
   "start_elevation_m": 487.37481865452486,
   "end_elevation_m": 487.785639888971,
   "start_xy": [
    299613.01592142245,
    4716299.208197554
   ],
   "end_xy": [
    299614.0834278253,
    4716297.51691695
   ]
  },
  "max_3m": {
   "gradient_pct": 20.3016005416013,
   "start_distance_m": 649.0,
   "end_distance_m": 652.0,
   "midpoint_distance_m": 650.5,
   "start_elevation_m": 487.17659187272295,
   "end_elevation_m": 487.785639888971,
   "start_xy": [
    299612.48216822103,
    4716300.053837855
   ],
   "end_xy": [
    299614.0834278253,
    4716297.51691695
   ]
  }
 },
 "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": 0.055,
   "obstruction_max_height_m": 21.93,
   "flagged_windows_m": [
    25,
    50,
    100
   ]
  },
  "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/ny/USGS_1M_18_x29y472_NY_FEMAR2_Central_2018_D19.tif",
   "data/cache/usa/ny/USGS_1M_18_x30y472_NY_FEMAR2_Central_2018_D19.tif"
  ],
  "calculated_at": "2026-09-06T12:13:31+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-york-2026-09-06-batch-band1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "ny-run3-260906",
  "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, NY_FEMAR2_Central_2018_D19 (collected 2018)",
  "elevation_tile_ids": [
   "x29y472",
   "x30y472"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NY_FEMAR2_Central_3_2018",
   "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": "Cohocton",
  "county": "New York"
 }
}