{
 "ocl_version": "0.1.0",
 "name": "Winsor Lane",
 "slug": "winsor-lane",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.239020026055982,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 300.0,
   "end_distance_m": 302.0,
   "start_elevation_m": 306.8040272357869,
   "end_elevation_m": 307.34880763630804,
   "min_gradient_pct": -1.716064969684794
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.51634421111832,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 299.0,
   "end_distance_m": 302.0,
   "start_elevation_m": 306.5533173099745,
   "end_elevation_m": 307.34880763630804,
   "min_gradient_pct": -1.159700284504576
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.964681783085325,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 297.0,
   "end_distance_m": 302.0,
   "start_elevation_m": 306.1005735471538,
   "end_elevation_m": 307.34880763630804,
   "min_gradient_pct": -0.5240119335553572
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.803693135960202,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 293.0,
   "end_distance_m": 303.0,
   "start_elevation_m": 305.17459965049085,
   "end_elevation_m": 307.55496896408687,
   "min_gradient_pct": 0.8746017395634453
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.74784119117129,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 283.0,
   "end_distance_m": 303.0,
   "start_elevation_m": 303.0054007258526,
   "end_elevation_m": 307.55496896408687,
   "min_gradient_pct": 2.2265998382877683
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.03207749979947,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 278.0,
   "end_distance_m": 303.0,
   "start_elevation_m": 302.046949589137,
   "end_elevation_m": 307.55496896408687,
   "min_gradient_pct": 2.438001091577462
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.94605987303055,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 254.0,
   "end_distance_m": 304.0,
   "start_elevation_m": 297.7726947610664,
   "end_elevation_m": 307.7457246975817,
   "min_gradient_pct": 3.337780518881459
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.720367718970692,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 202.0,
   "end_distance_m": 302.0,
   "start_elevation_m": 287.62843991733735,
   "end_elevation_m": 307.34880763630804,
   "min_gradient_pct": 6.146293060833841
  }
 ],
 "shape": {
  "ascent_concentration": 0.363,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 198.0,
  "shape_class": "sustained"
 },
 "length_m": 317.0150793378967,
 "start_elevation_m": 265.9838402784967,
 "end_elevation_m": 309.6194949410831,
 "endpoint_gain_m": 43.635654662586376,
 "overall_gradient_pct": 13.764535981607507,
 "accumulated_ascent_m": 43.68027405114401,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.964681783085325,
   "start_distance_m": 297.0,
   "end_distance_m": 302.0,
   "midpoint_distance_m": 299.5,
   "start_elevation_m": 306.1005735471538,
   "end_elevation_m": 307.34880763630804,
   "start_xy": [
    274407.287160904,
    4856808.804492415
   ],
   "end_xy": [
    274409.3262935331,
    4856813.3697892055
   ]
  },
  "max_10m": {
   "gradient_pct": 23.803693135960202,
   "start_distance_m": 293.0,
   "end_distance_m": 303.0,
   "midpoint_distance_m": 298.0,
   "start_elevation_m": 305.17459965049085,
   "end_elevation_m": 307.55496896408687,
   "start_xy": [
    274405.65518783126,
    4856805.152552672
   ],
   "end_xy": [
    274409.7342868014,
    4856814.282774141
   ]
  },
  "max_20m": {
   "gradient_pct": 22.74784119117129,
   "start_distance_m": 283.0,
   "end_distance_m": 303.0,
   "midpoint_distance_m": 293.0,
   "start_elevation_m": 303.0054007258526,
   "end_elevation_m": 307.55496896408687,
   "start_xy": [
    274401.57608886115,
    4856796.0223312015
   ],
   "end_xy": [
    274409.7342868014,
    4856814.282774141
   ]
  },
  "max_25m": {
   "gradient_pct": 22.03207749979947,
   "start_distance_m": 278.0,
   "end_distance_m": 303.0,
   "midpoint_distance_m": 290.5,
   "start_elevation_m": 302.046949589137,
   "end_elevation_m": 307.55496896408687,
   "start_xy": [
    274399.53612252045,
    4856791.457406522
   ],
   "end_xy": [
    274409.7342868014,
    4856814.282774141
   ]
  },
  "max_50m": {
   "gradient_pct": 19.94605987303055,
   "start_distance_m": 254.0,
   "end_distance_m": 304.0,
   "midpoint_distance_m": 279.0,
   "start_elevation_m": 297.7726947610664,
   "end_elevation_m": 307.7457246975817,
   "start_xy": [
    274388.30967661075,
    4856770.300260443
   ],
   "end_xy": [
    274410.1516597652,
    4856815.1907317955
   ]
  },
  "max_100m": {
   "gradient_pct": 19.720367718970692,
   "start_distance_m": 202.0,
   "end_distance_m": 302.0,
   "midpoint_distance_m": 252.0,
   "start_elevation_m": 287.62843991733735,
   "end_elevation_m": 307.34880763630804,
   "start_xy": [
    274348.84100129333,
    4856738.255813664
   ],
   "end_xy": [
    274409.3262935331,
    4856813.3697892055
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.5240119335553572,
   "start_distance_m": 18.0,
   "end_distance_m": 23.0,
   "midpoint_distance_m": 20.5,
   "start_elevation_m": 267.91157682010777,
   "end_elevation_m": 267.88537622343,
   "start_xy": [
    274194.6724857029,
    4856784.1034316495
   ],
   "end_xy": [
    274199.0724600997,
    4856781.734444985
   ]
  },
  "min_10m": {
   "gradient_pct": 0.8746017395634453,
   "start_distance_m": 15.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 20.0,
   "start_elevation_m": 267.8288734776628,
   "end_elevation_m": 267.91633365161914,
   "start_xy": [
    274191.73522977316,
    4856784.7118575955
   ],
   "end_xy": [
    274200.8177896273,
    4856780.757805805
   ]
  },
  "min_20m": {
   "gradient_pct": 2.2265998382877683,
   "start_distance_m": 93.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 103.0,
   "start_elevation_m": 273.42257174679037,
   "end_elevation_m": 273.8678917144479,
   "start_xy": [
    274249.9647138938,
    4856733.942811655
   ],
   "end_xy": [
    274265.51519513107,
    4856721.400632548
   ]
  },
  "min_25m": {
   "gradient_pct": 2.438001091577462,
   "start_distance_m": 88.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 100.5,
   "start_elevation_m": 273.25839144155356,
   "end_elevation_m": 273.8678917144479,
   "start_xy": [
    274246.31991248374,
    4856737.365591151
   ],
   "end_xy": [
    274265.51519513107,
    4856721.400632548
   ]
  },
  "min_50m": {
   "gradient_pct": 3.337780518881459,
   "start_distance_m": 69.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 94.0,
   "start_elevation_m": 272.52541963477853,
   "end_elevation_m": 274.19430989421926,
   "start_xy": [
    274232.4680990501,
    4856750.370482534
   ],
   "end_xy": [
    274270.69828869234,
    4856718.557000515
   ]
  },
  "min_100m": {
   "gradient_pct": 6.146293060833841,
   "start_distance_m": 15.0,
   "end_distance_m": 115.0,
   "midpoint_distance_m": 65.0,
   "start_elevation_m": 267.8288734776628,
   "end_elevation_m": 273.97516653849664,
   "start_xy": [
    274191.73522977316,
    4856784.7118575955
   ],
   "end_xy": [
    274267.1095398678,
    4856720.193129133
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.239020026055982,
   "start_distance_m": 300.0,
   "end_distance_m": 302.0,
   "midpoint_distance_m": 301.0,
   "start_elevation_m": 306.8040272357869,
   "end_elevation_m": 307.34880763630804,
   "start_xy": [
    274408.5103069969,
    4856811.543819333
   ],
   "end_xy": [
    274409.3262935331,
    4856813.3697892055
   ]
  },
  "max_3m": {
   "gradient_pct": 26.51634421111832,
   "start_distance_m": 299.0,
   "end_distance_m": 302.0,
   "midpoint_distance_m": 300.5,
   "start_elevation_m": 306.5533173099745,
   "end_elevation_m": 307.34880763630804,
   "start_xy": [
    274408.1023137286,
    4856810.630834398
   ],
   "end_xy": [
    274409.3262935331,
    4856813.3697892055
   ]
  }
 },
 "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": 0.163,
   "obstruction_max_height_m": 23.53,
   "flagged_windows_m": []
  },
  "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:26919",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/nh/USGS_one_meter_x27y486_NH_CT_RiverNorthL6_2015.tif"
  ],
  "calculated_at": "2026-09-03T22:47:18+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-hampshire-260822.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "run_id": "canopy-tail-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, NH_CT_RiverNorthL6_2015 (collected 2015)",
  "elevation_tile_ids": [
   "x27y486"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/USGS_LPC_CT_River_Lot6_Winnipesaulee_2015_LAS_2017",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.997,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Rumney",
  "county": "New Hampshire"
 }
}