{
 "ocl_version": "0.1.0",
 "name": "Turner Lane",
 "slug": "turner-lane-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 18.825424186729833,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 274.0,
   "end_distance_m": 276.0,
   "start_elevation_m": 396.25116765440356,
   "end_elevation_m": 396.62767613813816,
   "min_gradient_pct": -5.530512647362684,
   "suppressed_max_gradient_pct": 31.642277437336475,
   "suppressed_location_m": [
    489.0,
    491.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 18.754096085469502,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 274.0,
   "end_distance_m": 277.0,
   "start_elevation_m": 396.25116765440356,
   "end_elevation_m": 396.81379053696764,
   "min_gradient_pct": -5.0499162227121515,
   "suppressed_max_gradient_pct": 30.736920173673827,
   "suppressed_location_m": [
    488.0,
    491.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 18.34216085353205,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 274.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 396.25116765440356,
   "end_elevation_m": 397.16827569708016,
   "min_gradient_pct": -3.7778020396797274,
   "suppressed_max_gradient_pct": 29.85045013828426,
   "suppressed_location_m": [
    486.0,
    491.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.486381082088656,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 270.0,
   "end_distance_m": 280.0,
   "start_elevation_m": 395.5845968782721,
   "end_elevation_m": 397.333234986481,
   "min_gradient_pct": 0.4813724396552743,
   "suppressed_max_gradient_pct": 28.24353272515623,
   "suppressed_location_m": [
    481.0,
    491.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 15.809946343326544,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 262.0,
   "end_distance_m": 282.0,
   "start_elevation_m": 394.4501898284218,
   "end_elevation_m": 397.6121790970871,
   "min_gradient_pct": 1.0928346098503994,
   "suppressed_max_gradient_pct": 25.39812445122351,
   "suppressed_location_m": [
    472.0,
    492.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 15.349005310225266,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 304.0,
   "end_distance_m": 329.0,
   "start_elevation_m": 399.8732227586619,
   "end_elevation_m": 403.7104740862182,
   "min_gradient_pct": 1.2896957119833132,
   "suppressed_max_gradient_pct": 23.815273936970925,
   "suppressed_location_m": [
    472.0,
    497.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 14.006804565520838,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 232.0,
   "end_distance_m": 282.0,
   "start_elevation_m": 390.6087768143267,
   "end_elevation_m": 397.6121790970871,
   "min_gradient_pct": 2.414258283384015,
   "suppressed_max_gradient_pct": 18.192361583197567,
   "suppressed_location_m": [
    453.0,
    503.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.52546145699614,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 233.0,
   "end_distance_m": 333.0,
   "start_elevation_m": 390.74216467567135,
   "end_elevation_m": 404.2676261326675,
   "min_gradient_pct": 3.7888060573475286
  }
 ],
 "shape": {
  "ascent_concentration": 0.317,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 88.0,
  "shape_class": "sustained"
 },
 "length_m": 663.4205691078898,
 "start_elevation_m": 366.88842283309305,
 "end_elevation_m": 429.8393028625221,
 "endpoint_gain_m": 62.95088002942907,
 "overall_gradient_pct": 9.488834528311344,
 "accumulated_ascent_m": 63.33425205322658,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 18.34216085353205,
   "start_distance_m": 274.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 276.5,
   "start_elevation_m": 396.25116765440356,
   "end_elevation_m": 397.16827569708016,
   "start_xy": [
    622772.3389802763,
    4474073.716187116
   ],
   "end_xy": [
    622776.9775438067,
    4474071.852030653
   ]
  },
  "max_10m": {
   "gradient_pct": 17.486381082088656,
   "start_distance_m": 270.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 275.0,
   "start_elevation_m": 395.5845968782721,
   "end_elevation_m": 397.333234986481,
   "start_xy": [
    622768.4933644626,
    4474074.814570711
   ],
   "end_xy": [
    622777.9026569902,
    4474071.47233946
   ]
  },
  "max_20m": {
   "gradient_pct": 15.809946343326544,
   "start_distance_m": 262.0,
   "end_distance_m": 282.0,
   "midpoint_distance_m": 272.0,
   "start_elevation_m": 394.4501898284218,
   "end_elevation_m": 397.6121790970871,
   "start_xy": [
    622760.7891029733,
    4474076.969644027
   ],
   "end_xy": [
    622779.7531290904,
    4474070.713555756
   ]
  },
  "max_25m": {
   "gradient_pct": 15.349005310225266,
   "start_distance_m": 304.0,
   "end_distance_m": 329.0,
   "midpoint_distance_m": 316.5,
   "start_elevation_m": 399.8732227586619,
   "end_elevation_m": 403.7104740862182,
   "start_xy": [
    622800.1076644125,
    4474062.365336419
   ],
   "end_xy": [
    622824.1680696179,
    4474055.671880781
   ]
  },
  "max_50m": {
   "gradient_pct": 14.006804565520838,
   "start_distance_m": 232.0,
   "end_distance_m": 282.0,
   "midpoint_distance_m": 257.0,
   "start_elevation_m": 390.6087768143267,
   "end_elevation_m": 397.6121790970871,
   "start_xy": [
    622744.7499124928,
    4474063.7316753175
   ],
   "end_xy": [
    622779.7531290904,
    4474070.713555756
   ]
  },
  "max_100m": {
   "gradient_pct": 13.52546145699614,
   "start_distance_m": 233.0,
   "end_distance_m": 333.0,
   "midpoint_distance_m": 283.0,
   "start_elevation_m": 390.74216467567135,
   "end_elevation_m": 404.2676261326675,
   "start_xy": [
    622744.4528611774,
    4474064.686536824
   ],
   "end_xy": [
    622828.0410539826,
    4474054.671884819
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.7778020396797274,
   "start_distance_m": 16.0,
   "end_distance_m": 21.0,
   "midpoint_distance_m": 18.5,
   "start_elevation_m": 368.0880336644057,
   "end_elevation_m": 367.8991435624217,
   "start_xy": [
    622802.7733499183,
    4473856.208022903
   ],
   "end_xy": [
    622800.9876368917,
    4473860.87827211
   ]
  },
  "min_10m": {
   "gradient_pct": 0.4813724396552743,
   "start_distance_m": 15.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 20.0,
   "start_elevation_m": 368.04305774947454,
   "end_elevation_m": 368.09119499344007,
   "start_xy": [
    622802.2096643546,
    4473855.723009063
   ],
   "end_xy": [
    622799.558625271,
    4473864.614302512
   ]
  },
  "min_20m": {
   "gradient_pct": 1.0928346098503994,
   "start_distance_m": 537.0,
   "end_distance_m": 557.0,
   "midpoint_distance_m": 547.0,
   "start_elevation_m": 423.08692378382887,
   "end_elevation_m": 423.30549070579895,
   "start_xy": [
    623026.4558109267,
    4474049.227664471
   ],
   "end_xy": [
    623046.4448483012,
    4474048.583026302
   ]
  },
  "min_25m": {
   "gradient_pct": 1.2896957119833132,
   "start_distance_m": 538.0,
   "end_distance_m": 563.0,
   "midpoint_distance_m": 550.5,
   "start_elevation_m": 423.0919351223503,
   "end_elevation_m": 423.41435905034615,
   "start_xy": [
    623027.4551627766,
    4474049.19166614
   ],
   "end_xy": [
    623052.4441206211,
    4474048.4896300705
   ]
  },
  "min_50m": {
   "gradient_pct": 2.414258283384015,
   "start_distance_m": 532.0,
   "end_distance_m": 582.0,
   "midpoint_distance_m": 557.0,
   "start_elevation_m": 422.8834363507375,
   "end_elevation_m": 424.0905654924295,
   "start_xy": [
    623021.4589948598,
    4474049.4060562365
   ],
   "end_xy": [
    623071.4417876428,
    4474048.192027212
   ]
  },
  "min_100m": {
   "gradient_pct": 3.7888060573475286,
   "start_distance_m": 504.0,
   "end_distance_m": 604.0,
   "midpoint_distance_m": 554.0,
   "start_elevation_m": 421.6839954643324,
   "end_elevation_m": 425.4728015216799,
   "start_xy": [
    622993.8375596446,
    4474046.619252406
   ],
   "end_xy": [
    623093.4264022876,
    4474048.631541253
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 18.825424186729833,
   "start_distance_m": 274.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 275.0,
   "start_elevation_m": 396.25116765440356,
   "end_elevation_m": 396.62767613813816,
   "start_xy": [
    622772.3389802763,
    4474073.716187116
   ],
   "end_xy": [
    622774.2019081537,
    4474072.990382084
   ]
  },
  "max_3m": {
   "gradient_pct": 18.754096085469502,
   "start_distance_m": 274.0,
   "end_distance_m": 277.0,
   "midpoint_distance_m": 275.5,
   "start_elevation_m": 396.25116765440356,
   "end_elevation_m": 396.81379053696764,
   "start_xy": [
    622772.3389802763,
    4474073.716187116
   ],
   "end_xy": [
    622775.127215836,
    4474072.611165387
   ]
  }
 },
 "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": {
  "texture_suppression": {
   "masked_fraction": 0.045,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 472.0,
     "end_m": 497.0,
     "raw_pct": 23.82,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 472.0,
     "end_m": 492.0,
     "raw_pct": 25.4,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 481.0,
     "end_m": 491.0,
     "raw_pct": 28.24,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "excluded_ranges_m": [
   [
    470.0,
    499.0
   ]
  ],
  "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:26917",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa-west/USGS_1M_17_x62y448_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-12T01:14:53+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-us-pa/batch-usa-rchunk03.pbf",
  "osm_snapshot": "",
  "run_id": "texture-us-pa-260912",
  "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, PA_WesternPA_2019_D20 (collected 2020)",
  "elevation_tile_ids": [
   "x62y448"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_WesternPA_2019_D20: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Salem",
  "county": "Pennsylvania"
 }
}