{
 "ocl_version": "0.1.0",
 "name": "Long Hill Road",
 "slug": "long-hill-road-2-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.645202671105324,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1072.0,
   "end_distance_m": 1074.0,
   "start_elevation_m": 157.2538362993861,
   "end_elevation_m": 157.68674035280821,
   "min_gradient_pct": -16.920659009775818,
   "suppressed_max_gradient_pct": 21.831199234750898,
   "suppressed_location_m": [
    2264.0,
    2266.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.12446946382723,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1071.0,
   "end_distance_m": 1074.0,
   "start_elevation_m": 157.0530062688934,
   "end_elevation_m": 157.68674035280821,
   "min_gradient_pct": -16.99296925521973
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.65995670064524,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1078.0,
   "end_distance_m": 1083.0,
   "start_elevation_m": 158.47973417467432,
   "end_elevation_m": 159.51273200970658,
   "min_gradient_pct": -16.59985587044389
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.47005028095583,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1072.0,
   "end_distance_m": 1082.0,
   "start_elevation_m": 157.2538362993861,
   "end_elevation_m": 159.3008413274817,
   "min_gradient_pct": -15.213768852639191
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.247218581468758,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1064.0,
   "end_distance_m": 1084.0,
   "start_elevation_m": 155.65730145142402,
   "end_elevation_m": 159.70674516771777,
   "min_gradient_pct": -13.105754823235145
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.108585763042242,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1060.0,
   "end_distance_m": 1085.0,
   "start_elevation_m": 154.87005903971811,
   "end_elevation_m": 159.89720548047868,
   "min_gradient_pct": -12.431110181806616
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.507667429322908,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1048.0,
   "end_distance_m": 1098.0,
   "start_elevation_m": 152.85288063204703,
   "end_elevation_m": 162.1067143467085,
   "min_gradient_pct": -8.833233312121365
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.69136189982936,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1054.0,
   "end_distance_m": 1154.0,
   "start_elevation_m": 153.80455828337455,
   "end_elevation_m": 171.4959201832039,
   "min_gradient_pct": -5.564091934265434
  }
 ],
 "shape": {
  "ascent_concentration": 0.375,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 264.0,
  "shape_class": "sustained"
 },
 "length_m": 2621.5123178545473,
 "start_elevation_m": 109.43802584174,
 "end_elevation_m": 304.74663919936273,
 "endpoint_gain_m": 195.30861335762273,
 "overall_gradient_pct": 7.4502268033386105,
 "accumulated_ascent_m": 209.46013444909028,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.65995670064524,
   "start_distance_m": 1078.0,
   "end_distance_m": 1083.0,
   "midpoint_distance_m": 1080.5,
   "start_elevation_m": 158.47973417467432,
   "end_elevation_m": 159.51273200970658,
   "start_xy": [
    600077.6025408726,
    4595548.955024019
   ],
   "end_xy": [
    600072.6046158324,
    4595549.099056278
   ]
  },
  "max_10m": {
   "gradient_pct": 20.47005028095583,
   "start_distance_m": 1072.0,
   "end_distance_m": 1082.0,
   "midpoint_distance_m": 1077.0,
   "start_elevation_m": 157.2538362993861,
   "end_elevation_m": 159.3008413274817,
   "start_xy": [
    600083.600050921,
    4595548.782185307
   ],
   "end_xy": [
    600073.6042008405,
    4595549.070249827
   ]
  },
  "max_20m": {
   "gradient_pct": 20.247218581468758,
   "start_distance_m": 1064.0,
   "end_distance_m": 1084.0,
   "midpoint_distance_m": 1074.0,
   "start_elevation_m": 155.65730145142402,
   "end_elevation_m": 159.70674516771777,
   "start_xy": [
    600091.5967309854,
    4595548.551733691
   ],
   "end_xy": [
    600071.607696828,
    4595549.053672317
   ]
  },
  "max_25m": {
   "gradient_pct": 20.108585763042242,
   "start_distance_m": 1060.0,
   "end_distance_m": 1085.0,
   "midpoint_distance_m": 1072.5,
   "start_elevation_m": 154.87005903971811,
   "end_elevation_m": 159.89720548047868,
   "start_xy": [
    600095.5950710176,
    4595548.4365078835
   ],
   "end_xy": [
    600070.612757639,
    4595548.953193414
   ]
  },
  "max_50m": {
   "gradient_pct": 18.507667429322908,
   "start_distance_m": 1048.0,
   "end_distance_m": 1098.0,
   "midpoint_distance_m": 1073.0,
   "start_elevation_m": 152.85288063204703,
   "end_elevation_m": 162.1067143467085,
   "start_xy": [
    600107.5864966133,
    4595548.296471186
   ],
   "end_xy": [
    600057.7401408633,
    4595547.272491756
   ]
  },
  "max_100m": {
   "gradient_pct": 17.69136189982936,
   "start_distance_m": 1054.0,
   "end_distance_m": 1154.0,
   "midpoint_distance_m": 1104.0,
   "start_elevation_m": 153.80455828337455,
   "end_elevation_m": 171.4959201832039,
   "start_xy": [
    600101.592581066,
    4595548.263669172
   ],
   "end_xy": [
    600008.1285949231,
    4595521.949659613
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -16.59985587044389,
   "start_distance_m": 2514.0,
   "end_distance_m": 2519.0,
   "midpoint_distance_m": 2516.5,
   "start_elevation_m": 309.4123593571767,
   "end_elevation_m": 308.5823665636545,
   "start_xy": [
    599005.6703762932,
    4594973.7066424955
   ],
   "end_xy": [
    599000.7241934622,
    4594974.438267673
   ]
  },
  "min_10m": {
   "gradient_pct": -15.213768852639191,
   "start_distance_m": 2512.0,
   "end_distance_m": 2522.0,
   "midpoint_distance_m": 2517.0,
   "start_elevation_m": 309.6858938930595,
   "end_elevation_m": 308.16451700779555,
   "start_xy": [
    599007.6488494256,
    4594973.413992424
   ],
   "end_xy": [
    598997.7564837635,
    4594974.87724278
   ]
  },
  "min_20m": {
   "gradient_pct": -13.105754823235145,
   "start_distance_m": 2509.0,
   "end_distance_m": 2529.0,
   "midpoint_distance_m": 2519.0,
   "start_elevation_m": 310.0053742641418,
   "end_elevation_m": 307.38422329949475,
   "start_xy": [
    599010.6165591243,
    4594972.975017317
   ],
   "end_xy": [
    598990.8318278,
    4594975.90151803
   ]
  },
  "min_25m": {
   "gradient_pct": -12.431110181806616,
   "start_distance_m": 2508.0,
   "end_distance_m": 2533.0,
   "midpoint_distance_m": 2520.5,
   "start_elevation_m": 310.100491916097,
   "end_elevation_m": 306.99271437064533,
   "start_xy": [
    599011.6057956904,
    4594972.828692281
   ],
   "end_xy": [
    598986.8844333424,
    4594976.5416435795
   ]
  },
  "min_50m": {
   "gradient_pct": -8.833233312121365,
   "start_distance_m": 2503.0,
   "end_distance_m": 2553.0,
   "midpoint_distance_m": 2528.0,
   "start_elevation_m": 310.41805118396627,
   "end_elevation_m": 306.0014345279056,
   "start_xy": [
    599016.5519785215,
    4594972.097067103
   ],
   "end_xy": [
    598967.2757043198,
    4594980.478361264
   ]
  },
  "min_100m": {
   "gradient_pct": -5.564091934265434,
   "start_distance_m": 2501.0,
   "end_distance_m": 2601.0,
   "midpoint_distance_m": 2551.0,
   "start_elevation_m": 310.48059981748406,
   "end_elevation_m": 304.9165078832186,
   "start_xy": [
    599018.530451654,
    4594971.804417032
   ],
   "end_xy": [
    598919.7609292384,
    4594987.092718941
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.645202671105324,
   "start_distance_m": 1072.0,
   "end_distance_m": 1074.0,
   "midpoint_distance_m": 1073.0,
   "start_elevation_m": 157.2538362993861,
   "end_elevation_m": 157.68674035280821,
   "start_xy": [
    600083.600050921,
    4595548.782185307
   ],
   "end_xy": [
    600081.6008809049,
    4595548.839798211
   ]
  },
  "max_3m": {
   "gradient_pct": 21.12446946382723,
   "start_distance_m": 1071.0,
   "end_distance_m": 1074.0,
   "midpoint_distance_m": 1072.5,
   "start_elevation_m": 157.0530062688934,
   "end_elevation_m": 157.68674035280821,
   "start_xy": [
    600084.5996359291,
    4595548.753378855
   ],
   "end_xy": [
    600081.6008809049,
    4595548.839798211
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.167,
   "windows_resited": [
    2.0
   ],
   "windows_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.213,
   "obstruction_max_height_m": 40.5,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    1989.0,
    2098.0
   ],
   [
    2151.0,
    2191.0
   ],
   [
    2243.0,
    2283.0
   ],
   [
    2339.0,
    2472.0
   ],
   [
    2478.0,
    2549.0
   ],
   [
    2581.0,
    2621.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "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_x59y460_NY_SouthEast4County_A22.tif",
   "data/cache/usa/ny/USGS_1M_18_x60y460_NY_SouthEast4County_A22.tif"
  ],
  "calculated_at": "2026-09-06T23:18:51+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.osm.pbf",
  "osm_snapshot": "2026-09-04T20:21:21Z",
  "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_SouthEast4County_A22 (collected 2022)",
  "elevation_tile_ids": [
   "x59y460",
   "x60y460"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NY_SE4County_1_A22",
   "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": "East Fishkill",
  "county": "New York"
 },
 "review_flags": [
  {
   "kind": "possible-bridge-or-hollow",
   "span_m": [
    959.0,
    1119.0
   ],
   "status": "pending-human-review",
   "noted": "2026-09-21",
   "figure_adjusted": false
  }
 ]
}