{
 "ocl_version": "0.1.0",
 "name": "Old Moses Farm Road",
 "slug": "old-moses-farm-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 30.08807132906952,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 75.0,
   "end_distance_m": 77.0,
   "start_elevation_m": 380.7833511812109,
   "end_elevation_m": 381.3851126077923,
   "min_gradient_pct": -1.899713557713767
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.49606845825201,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 74.0,
   "end_distance_m": 77.0,
   "start_elevation_m": 380.5002305540447,
   "end_elevation_m": 381.3851126077923,
   "min_gradient_pct": -0.8329102289413489
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 29.32329034315103,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 72.0,
   "end_distance_m": 77.0,
   "start_elevation_m": 379.91894809063473,
   "end_elevation_m": 381.3851126077923,
   "min_gradient_pct": 2.354641475637891
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.422476007591513,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 69.0,
   "end_distance_m": 79.0,
   "start_elevation_m": 379.0590053600547,
   "end_elevation_m": 381.90125296081385,
   "min_gradient_pct": 5.2402616213856845
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.82088619300208,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 57.0,
   "end_distance_m": 77.0,
   "start_elevation_m": 376.22093536919186,
   "end_elevation_m": 381.3851126077923,
   "min_gradient_pct": 7.100537008380456
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.950603913624946,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 53.0,
   "end_distance_m": 78.0,
   "start_elevation_m": 375.17675947053425,
   "end_elevation_m": 381.6644104489405,
   "min_gradient_pct": 8.514541446858402
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.21487308517021,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 31.0,
   "end_distance_m": 81.0,
   "start_elevation_m": 370.7341220648955,
   "end_elevation_m": 382.3415586074806,
   "min_gradient_pct": 12.460326889128282
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.532601267230177,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 8.0,
   "end_distance_m": 108.0,
   "start_elevation_m": 368.1020914863579,
   "end_elevation_m": 387.63469275358807,
   "min_gradient_pct": 14.886305858264791
  }
 ],
 "shape": {
  "ascent_concentration": 0.338,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 156.0,
  "shape_class": "sustained"
 },
 "length_m": 288.40000000015164,
 "start_elevation_m": 367.2732264013732,
 "end_elevation_m": 414.581760925857,
 "endpoint_gain_m": 47.308534524483775,
 "overall_gradient_pct": 16.403791443987135,
 "accumulated_ascent_m": 47.35848379396731,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 29.32329034315103,
   "start_distance_m": 72.0,
   "end_distance_m": 77.0,
   "midpoint_distance_m": 74.5,
   "start_elevation_m": 379.91894809063473,
   "end_elevation_m": 381.3851126077923,
   "start_xy": [
    710837.144406133,
    4856045.753891446
   ],
   "end_xy": [
    710833.3216224046,
    4856042.5311108865
   ]
  },
  "max_10m": {
   "gradient_pct": 28.422476007591513,
   "start_distance_m": 69.0,
   "end_distance_m": 79.0,
   "midpoint_distance_m": 74.0,
   "start_elevation_m": 379.0590053600547,
   "end_elevation_m": 381.90125296081385,
   "start_xy": [
    710839.4385246494,
    4856047.687028593
   ],
   "end_xy": [
    710831.7921006231,
    4856041.242482725
   ]
  },
  "max_20m": {
   "gradient_pct": 25.82088619300208,
   "start_distance_m": 57.0,
   "end_distance_m": 77.0,
   "midpoint_distance_m": 67.0,
   "start_elevation_m": 376.22093536919186,
   "end_elevation_m": 381.3851126077923,
   "start_xy": [
    710848.3808063188,
    4856055.658035566
   ],
   "end_xy": [
    710833.3216224046,
    4856042.5311108865
   ]
  },
  "max_25m": {
   "gradient_pct": 25.950603913624946,
   "start_distance_m": 53.0,
   "end_distance_m": 78.0,
   "midpoint_distance_m": 65.5,
   "start_elevation_m": 375.17675947053425,
   "end_elevation_m": 381.6644104489405,
   "start_xy": [
    710850.9866233217,
    4856058.692786965
   ],
   "end_xy": [
    710832.5566257684,
    4856041.887076628
   ]
  },
  "max_50m": {
   "gradient_pct": 23.21487308517021,
   "start_distance_m": 31.0,
   "end_distance_m": 81.0,
   "midpoint_distance_m": 56.0,
   "start_elevation_m": 370.7341220648955,
   "end_elevation_m": 382.3415586074806,
   "start_xy": [
    710865.5898871014,
    4856075.1444865605
   ],
   "end_xy": [
    710830.2657545971,
    4856039.9504336165
   ]
  },
  "max_100m": {
   "gradient_pct": 19.532601267230177,
   "start_distance_m": 8.0,
   "end_distance_m": 108.0,
   "midpoint_distance_m": 58.0,
   "start_elevation_m": 368.1020914863579,
   "end_elevation_m": 387.63469275358807,
   "start_xy": [
    710879.114980668,
    4856093.119809551
   ],
   "end_xy": [
    710812.1185591015,
    4856019.959459383
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 2.354641475637891,
   "start_distance_m": 277.0,
   "end_distance_m": 282.0,
   "midpoint_distance_m": 279.5,
   "start_elevation_m": 413.9570884965201,
   "end_elevation_m": 414.074820570302,
   "start_xy": [
    710686.306765321,
    4855909.246811672
   ],
   "end_xy": [
    710682.8195607353,
    4855905.663601215
   ]
  },
  "min_10m": {
   "gradient_pct": 5.2402616213856845,
   "start_distance_m": 278.0,
   "end_distance_m": 288.0,
   "midpoint_distance_m": 283.0,
   "start_elevation_m": 414.03840380598484,
   "end_elevation_m": 414.5624299681234,
   "start_xy": [
    710685.6097059051,
    4855908.529798319
   ],
   "end_xy": [
    710678.6348062886,
    4855901.363853815
   ]
  },
  "min_20m": {
   "gradient_pct": 7.100537008380456,
   "start_distance_m": 108.0,
   "end_distance_m": 128.0,
   "midpoint_distance_m": 118.0,
   "start_elevation_m": 387.63469275358807,
   "end_elevation_m": 389.05480015526416,
   "start_xy": [
    710812.1185591015,
    4856019.959459383
   ],
   "end_xy": [
    710798.5334903938,
    4856005.281385219
   ]
  },
  "min_25m": {
   "gradient_pct": 8.514541446858402,
   "start_distance_m": 106.0,
   "end_distance_m": 131.0,
   "midpoint_distance_m": 118.5,
   "start_elevation_m": 387.3583650935882,
   "end_elevation_m": 389.4870004553028,
   "start_xy": [
    710813.4767179053,
    4856021.427589017
   ],
   "end_xy": [
    710796.4957659243,
    4856003.079640926
   ]
  },
  "min_50m": {
   "gradient_pct": 12.460326889128282,
   "start_distance_m": 101.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 126.0,
   "start_elevation_m": 386.3026722453121,
   "end_elevation_m": 392.53283568987626,
   "start_xy": [
    710816.8706226218,
    4856025.099284892
   ],
   "end_xy": [
    710782.6679939687,
    4855988.633686646
   ]
  },
  "min_100m": {
   "gradient_pct": 14.886305858264791,
   "start_distance_m": 188.0,
   "end_distance_m": 288.0,
   "midpoint_distance_m": 238.0,
   "start_elevation_m": 399.6761241098586,
   "end_elevation_m": 414.5624299681234,
   "start_xy": [
    710751.898628866,
    4855968.7520436775
   ],
   "end_xy": [
    710678.6348062886,
    4855901.363853815
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 30.08807132906952,
   "start_distance_m": 75.0,
   "end_distance_m": 77.0,
   "midpoint_distance_m": 76.0,
   "start_elevation_m": 380.7833511812109,
   "end_elevation_m": 381.3851126077923,
   "start_xy": [
    710834.8507440496,
    4856043.820213291
   ],
   "end_xy": [
    710833.3216224046,
    4856042.5311108865
   ]
  },
  "max_3m": {
   "gradient_pct": 29.49606845825201,
   "start_distance_m": 74.0,
   "end_distance_m": 77.0,
   "midpoint_distance_m": 75.5,
   "start_elevation_m": 380.5002305540447,
   "end_elevation_m": 381.3851126077923,
   "start_xy": [
    710835.6148841986,
    4856044.465263492
   ],
   "end_xy": [
    710833.3216224046,
    4856042.5311108865
   ]
  }
 },
 "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": 0.969,
   "obstruction_max_height_m": 28.29,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "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/vt/USGS_1M_18_x71y486_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-08T14:39:54+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/vermont-260821-batch.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "run_id": "retro-box-260908",
  "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, VT_Statewide_A23 (collected 2023)",
  "elevation_tile_ids": [
   "x71y486"
  ],
  "route_cut_m": 288.4,
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/VT_Statewide_2_A23",
   "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": "Strafford",
  "county": "Vermont"
 }
}