{
 "ocl_version": "0.1.0",
 "name": "Lansdowne Avenue",
 "slug": "lansdowne-avenue",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 30.16295826098485,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 790.0,
   "end_distance_m": 792.0,
   "start_elevation_m": 397.4182187031068,
   "end_elevation_m": 398.0214778683265,
   "min_gradient_pct": -2.9653678968657005
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.47359968078346,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 789.0,
   "end_distance_m": 792.0,
   "start_elevation_m": 397.167269877903,
   "end_elevation_m": 398.0214778683265,
   "min_gradient_pct": -2.804731274475595
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.964221622733476,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 789.0,
   "end_distance_m": 794.0,
   "start_elevation_m": 397.167269877903,
   "end_elevation_m": 398.41548095903966,
   "min_gradient_pct": -2.545846994898966
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.038819840094902,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 530.0,
   "end_distance_m": 540.0,
   "start_elevation_m": 380.5448960674655,
   "end_elevation_m": 382.648778051475,
   "min_gradient_pct": -1.7878371420835037
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.56952547455296,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 521.0,
   "end_distance_m": 541.0,
   "start_elevation_m": 378.7338216749373,
   "end_elevation_m": 382.8477267698479,
   "min_gradient_pct": -0.9464893793378337
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.338518499454494,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 515.0,
   "end_distance_m": 540.0,
   "start_elevation_m": 377.5641484266114,
   "end_elevation_m": 382.648778051475,
   "min_gradient_pct": -0.6248769201715731
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.256887781966384,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 492.0,
   "end_distance_m": 542.0,
   "start_elevation_m": 373.4034162980159,
   "end_elevation_m": 383.0318601889991,
   "min_gradient_pct": 0.05903749522030921
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.450255859888443,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 469.0,
   "end_distance_m": 569.0,
   "start_elevation_m": 370.06066539641006,
   "end_elevation_m": 387.5109212562985,
   "min_gradient_pct": 0.9174278131585538
  }
 ],
 "shape": {
  "ascent_concentration": 0.419,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 125.0,
  "shape_class": "sustained"
 },
 "length_m": 953.1697650861644,
 "start_elevation_m": 350.60311945629195,
 "end_elevation_m": 418.8797839083869,
 "endpoint_gain_m": 68.27666445209496,
 "overall_gradient_pct": 7.163116891975997,
 "accumulated_ascent_m": 68.54039693538823,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.964221622733476,
   "start_distance_m": 789.0,
   "end_distance_m": 794.0,
   "midpoint_distance_m": 791.5,
   "start_elevation_m": 397.167269877903,
   "end_elevation_m": 398.41548095903966,
   "start_xy": [
    442143.15788503486,
    4593768.404607481
   ],
   "end_xy": [
    442147.6616729052,
    4593770.576218592
   ]
  },
  "max_10m": {
   "gradient_pct": 21.038819840094902,
   "start_distance_m": 530.0,
   "end_distance_m": 540.0,
   "midpoint_distance_m": 535.0,
   "start_elevation_m": 380.5448960674655,
   "end_elevation_m": 382.648778051475,
   "start_xy": [
    442185.3173320364,
    4593544.828742227
   ],
   "end_xy": [
    442193.05721709714,
    4593551.160738693
   ]
  },
  "max_20m": {
   "gradient_pct": 20.56952547455296,
   "start_distance_m": 521.0,
   "end_distance_m": 541.0,
   "midpoint_distance_m": 531.0,
   "start_elevation_m": 378.7338216749373,
   "end_elevation_m": 382.8477267698479,
   "start_xy": [
    442178.3514354817,
    4593539.129945408
   ],
   "end_xy": [
    442193.8312056032,
    4593551.79393834
   ]
  },
  "max_25m": {
   "gradient_pct": 20.338518499454494,
   "start_distance_m": 515.0,
   "end_distance_m": 540.0,
   "midpoint_distance_m": 527.5,
   "start_elevation_m": 377.5641484266114,
   "end_elevation_m": 382.648778051475,
   "start_xy": [
    442173.7075044452,
    4593535.330747528
   ],
   "end_xy": [
    442193.05721709714,
    4593551.160738693
   ]
  },
  "max_50m": {
   "gradient_pct": 19.256887781966384,
   "start_distance_m": 492.0,
   "end_distance_m": 542.0,
   "midpoint_distance_m": 517.0,
   "start_elevation_m": 373.4034162980159,
   "end_elevation_m": 383.0318601889991,
   "start_xy": [
    442155.9057688055,
    4593520.767155656
   ],
   "end_xy": [
    442194.60519410926,
    4593552.427137986
   ]
  },
  "max_100m": {
   "gradient_pct": 17.450255859888443,
   "start_distance_m": 469.0,
   "end_distance_m": 569.0,
   "midpoint_distance_m": 519.0,
   "start_elevation_m": 370.06066539641006,
   "end_elevation_m": 387.5109212562985,
   "start_xy": [
    442138.251959855,
    4593506.025465419
   ],
   "end_xy": [
    442215.5028837733,
    4593569.523528445
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.545846994898966,
   "start_distance_m": 90.0,
   "end_distance_m": 95.0,
   "midpoint_distance_m": 92.5,
   "start_elevation_m": 353.3988181813566,
   "end_elevation_m": 353.27152583161165,
   "start_xy": [
    441850.62623622856,
    4593259.358929245
   ],
   "end_xy": [
    441854.48325432907,
    4593262.5406601215
   ]
  },
  "min_10m": {
   "gradient_pct": -1.7878371420835037,
   "start_distance_m": 89.0,
   "end_distance_m": 99.0,
   "midpoint_distance_m": 94.0,
   "start_elevation_m": 353.417774977765,
   "end_elevation_m": 353.23899126355667,
   "start_xy": [
    441849.8548326085,
    4593258.7225830695
   ],
   "end_xy": [
    441857.56886880944,
    4593265.086044823
   ]
  },
  "min_20m": {
   "gradient_pct": -0.9464893793378337,
   "start_distance_m": 88.0,
   "end_distance_m": 108.0,
   "midpoint_distance_m": 98.0,
   "start_elevation_m": 353.42919274116707,
   "end_elevation_m": 353.2398948652995,
   "start_xy": [
    441849.08342898835,
    4593258.086236894
   ],
   "end_xy": [
    441864.511971114,
    4593270.812590926
   ]
  },
  "min_25m": {
   "gradient_pct": -0.6248769201715731,
   "start_distance_m": 88.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 100.5,
   "start_elevation_m": 353.42919274116707,
   "end_elevation_m": 353.2729735111242,
   "start_xy": [
    441849.08342898835,
    4593258.086236894
   ],
   "end_xy": [
    441868.36930950667,
    4593273.993933492
   ]
  },
  "min_50m": {
   "gradient_pct": 0.05903749522030921,
   "start_distance_m": 88.0,
   "end_distance_m": 138.0,
   "midpoint_distance_m": 113.0,
   "start_elevation_m": 353.42919274116707,
   "end_elevation_m": 353.4587114887772,
   "start_xy": [
    441849.08342898835,
    4593258.086236894
   ],
   "end_xy": [
    441887.6568572435,
    4593289.899608637
   ]
  },
  "min_100m": {
   "gradient_pct": 0.9174278131585538,
   "start_distance_m": 87.0,
   "end_distance_m": 187.0,
   "midpoint_distance_m": 137.0,
   "start_elevation_m": 353.4085803016141,
   "end_elevation_m": 354.32600811477266,
   "start_xy": [
    441849.2978937905,
    4593257.325477925
   ],
   "end_xy": [
    441925.46068650705,
    4593321.074446127
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 30.16295826098485,
   "start_distance_m": 790.0,
   "end_distance_m": 792.0,
   "midpoint_distance_m": 791.0,
   "start_elevation_m": 397.4182187031068,
   "end_elevation_m": 398.0214778683265,
   "start_xy": [
    442144.0586426089,
    4593768.838929703
   ],
   "end_xy": [
    442145.86015775707,
    4593769.707574148
   ]
  },
  "max_3m": {
   "gradient_pct": 28.47359968078346,
   "start_distance_m": 789.0,
   "end_distance_m": 792.0,
   "midpoint_distance_m": 790.5,
   "start_elevation_m": 397.167269877903,
   "end_elevation_m": 398.0214778683265,
   "start_xy": [
    442143.15788503486,
    4593768.404607481
   ],
   "end_xy": [
    442145.86015775707,
    4593769.707574148
   ]
  }
 },
 "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_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/pa/USGS_1M_18_x44y460_PA_Northcentral_2019_B19.tif"
  ],
  "calculated_at": "2026-09-07T15:23:19+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/pennsylvania-2026-09-07-batch-band4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "pa-run4-260907",
  "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_Northcentral_2019_B19 (collected 2019)",
  "elevation_tile_ids": [
   "x44y460"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_Northcentral_2019_B19: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Clarks Summit",
  "county": "Pennsylvania"
 }
}