{
 "ocl_version": "0.1.0",
 "name": "Winsor Lane",
 "slug": "winsor-lane",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.211088402606265,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 300.0,
   "end_distance_m": 302.0,
   "start_elevation_m": 306.7846926855884,
   "end_elevation_m": 307.32891445364055,
   "min_gradient_pct": -1.7217066226038469
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.4590977750269,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 299.0,
   "end_distance_m": 302.0,
   "start_elevation_m": 306.53514152038974,
   "end_elevation_m": 307.32891445364055,
   "min_gradient_pct": -1.1697702936165417
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.90320797061031,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 297.0,
   "end_distance_m": 302.0,
   "start_elevation_m": 306.08375405511003,
   "end_elevation_m": 307.32891445364055,
   "min_gradient_pct": -0.5313429368152356
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.82733010160848,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 293.0,
   "end_distance_m": 303.0,
   "start_elevation_m": 305.1587117556761,
   "end_elevation_m": 307.54144476583696,
   "min_gradient_pct": 0.8718555057578214
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.752964368280004,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 283.0,
   "end_distance_m": 303.0,
   "start_elevation_m": 302.99085189218096,
   "end_elevation_m": 307.54144476583696,
   "min_gradient_pct": 2.2239683437956614
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.02957513034403,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 278.0,
   "end_distance_m": 303.0,
   "start_elevation_m": 302.03405098325095,
   "end_elevation_m": 307.54144476583696,
   "min_gradient_pct": 2.438283771028864
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.938169856939794,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 254.0,
   "end_distance_m": 304.0,
   "start_elevation_m": 297.76117317633,
   "end_elevation_m": 307.7302581047999,
   "min_gradient_pct": 3.335845435484316
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.716964496615162,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 203.0,
   "end_distance_m": 303.0,
   "start_elevation_m": 287.8244802692218,
   "end_elevation_m": 307.54144476583696,
   "min_gradient_pct": 6.144292038642334
  }
 ],
 "shape": {
  "ascent_concentration": 0.363,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 198.0,
  "shape_class": "sustained"
 },
 "length_m": 317.1048826259199,
 "start_elevation_m": 265.9838402784967,
 "end_elevation_m": 309.6194949410831,
 "endpoint_gain_m": 43.635654662586376,
 "overall_gradient_pct": 13.760637900382688,
 "accumulated_ascent_m": 43.67972667474828,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.90320797061031,
   "start_distance_m": 297.0,
   "end_distance_m": 302.0,
   "midpoint_distance_m": 299.5,
   "start_elevation_m": 306.08375405511003,
   "end_elevation_m": 307.32891445364055,
   "start_xy": [
    274407.256671893,
    4856808.737161636
   ],
   "end_xy": [
    274409.2962417894,
    4856813.302263458
   ]
  },
  "max_10m": {
   "gradient_pct": 23.82733010160848,
   "start_distance_m": 293.0,
   "end_distance_m": 303.0,
   "midpoint_distance_m": 298.0,
   "start_elevation_m": 305.1587117556761,
   "end_elevation_m": 307.54144476583696,
   "start_xy": [
    274405.6250159759,
    4856805.085080179
   ],
   "end_xy": [
    274409.70415576873,
    4856814.215283822
   ]
  },
  "max_20m": {
   "gradient_pct": 22.752964368280004,
   "start_distance_m": 283.0,
   "end_distance_m": 303.0,
   "midpoint_distance_m": 293.0,
   "start_elevation_m": 302.99085189218096,
   "end_elevation_m": 307.54144476583696,
   "start_xy": [
    274401.5458761831,
    4856795.954876537
   ],
   "end_xy": [
    274409.70415576873,
    4856814.215283822
   ]
  },
  "max_25m": {
   "gradient_pct": 22.02957513034403,
   "start_distance_m": 278.0,
   "end_distance_m": 303.0,
   "midpoint_distance_m": 290.5,
   "start_elevation_m": 302.03405098325095,
   "end_elevation_m": 307.54144476583696,
   "start_xy": [
    274399.50630628667,
    4856791.389774716
   ],
   "end_xy": [
    274409.70415576873,
    4856814.215283822
   ]
  },
  "max_50m": {
   "gradient_pct": 19.938169856939794,
   "start_distance_m": 254.0,
   "end_distance_m": 304.0,
   "midpoint_distance_m": 279.0,
   "start_elevation_m": 297.76117317633,
   "end_elevation_m": 307.7302581047999,
   "start_xy": [
    274388.27230724547,
    4856770.238989475
   ],
   "end_xy": [
    274410.112069748,
    4856815.128304186
   ]
  },
  "max_100m": {
   "gradient_pct": 19.716964496615162,
   "start_distance_m": 203.0,
   "end_distance_m": 303.0,
   "midpoint_distance_m": 253.0,
   "start_elevation_m": 287.8244802692218,
   "end_elevation_m": 307.54144476583696,
   "start_xy": [
    274349.684049254,
    4856738.653607928
   ],
   "end_xy": [
    274409.70415576873,
    4856814.215283822
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.5313429368152356,
   "start_distance_m": 18.0,
   "end_distance_m": 23.0,
   "midpoint_distance_m": 20.5,
   "start_elevation_m": 267.911702884885,
   "end_elevation_m": 267.88513573804426,
   "start_xy": [
    274194.65796263004,
    4856784.110028622
   ],
   "end_xy": [
    274199.05047689495,
    4856781.747196767
   ]
  },
  "min_10m": {
   "gradient_pct": 0.8718555057578214,
   "start_distance_m": 15.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 20.0,
   "start_elevation_m": 267.82891420075214,
   "end_elevation_m": 267.9160997513279,
   "start_xy": [
    274191.7196361563,
    4856784.7152042445
   ],
   "end_xy": [
    274200.7956087702,
    4856780.770204066
   ]
  },
  "min_20m": {
   "gradient_pct": 2.2239683437956614,
   "start_distance_m": 93.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 103.0,
   "start_elevation_m": 273.4216587133317,
   "end_elevation_m": 273.8664523820908,
   "start_xy": [
    274249.93996044353,
    4856733.966169353
   ],
   "end_xy": [
    274265.4873824921,
    4856721.421780544
   ]
  },
  "min_25m": {
   "gradient_pct": 2.438283771028864,
   "start_distance_m": 88.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 100.5,
   "start_elevation_m": 273.2568814393336,
   "end_elevation_m": 273.8664523820908,
   "start_xy": [
    274246.29486326315,
    4856737.388634334
   ],
   "end_xy": [
    274265.4873824921,
    4856721.421780544
   ]
  },
  "min_50m": {
   "gradient_pct": 3.335845435484316,
   "start_distance_m": 69.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 94.0,
   "start_elevation_m": 272.5225672271393,
   "end_elevation_m": 274.19048994488145,
   "start_xy": [
    274232.44349397765,
    4856750.394001261
   ],
   "end_xy": [
    274270.65074996976,
    4856718.570408023
   ]
  },
  "min_100m": {
   "gradient_pct": 6.144292038642334,
   "start_distance_m": 15.0,
   "end_distance_m": 115.0,
   "midpoint_distance_m": 65.0,
   "start_elevation_m": 267.82891420075214,
   "end_elevation_m": 273.9732062393945,
   "start_xy": [
    274191.7196361563,
    4856784.7152042445
   ],
   "end_xy": [
    274267.0815407554,
    4856720.214030805
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.211088402606265,
   "start_distance_m": 300.0,
   "end_distance_m": 302.0,
   "midpoint_distance_m": 301.0,
   "start_elevation_m": 306.7846926855884,
   "end_elevation_m": 307.32891445364055,
   "start_xy": [
    274408.48041383084,
    4856811.476222729
   ],
   "end_xy": [
    274409.2962417894,
    4856813.302263458
   ]
  },
  "max_3m": {
   "gradient_pct": 26.4590977750269,
   "start_distance_m": 299.0,
   "end_distance_m": 302.0,
   "midpoint_distance_m": 300.5,
   "start_elevation_m": 306.53514152038974,
   "end_elevation_m": 307.32891445364055,
   "start_xy": [
    274408.0724998516,
    4856810.563202365
   ],
   "end_xy": [
    274409.2962417894,
    4856813.302263458
   ]
  }
 },
 "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": {
  "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": "2026-08-24T20:27:07+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": "redo-nh-1-260824",
  "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",
  "notes": "Coarse pass: max 16.5% over 200 m (Terrain 50), gain 43.2 m over 317 m way. KEPT at seed extent: no ascending continuation (min_avg=2.0%). ADOPTED (NE wave 1, 2026-08-25): clean-steep. Wales dials per PRODUCTION 'US ADOPTION DIALS'.",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing.html"
 },
 "area": {
  "place": "Rumney",
  "county": "New Hampshire"
 }
}