{
 "ocl_version": "0.1.0",
 "name": "Cadwallader Street",
 "slug": "cadwallader-street",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.620695489397406,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 114.0,
   "end_distance_m": 116.0,
   "start_elevation_m": 246.63842504780612,
   "end_elevation_m": 247.17083895759407,
   "min_gradient_pct": -4.671782630455823,
   "suppressed_max_gradient_pct": 57.59391173754835,
   "suppressed_location_m": [
    0.0,
    2.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.400747897701155,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 113.0,
   "end_distance_m": 116.0,
   "start_elevation_m": 246.37881652066304,
   "end_elevation_m": 247.17083895759407,
   "min_gradient_pct": -4.300569274399398,
   "suppressed_max_gradient_pct": 41.9242965246364,
   "suppressed_location_m": [
    0.0,
    3.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.738242163844234,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 112.0,
   "end_distance_m": 117.0,
   "start_elevation_m": 246.12660294813463,
   "end_elevation_m": 247.41351505632684,
   "min_gradient_pct": -3.3903570485870205
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.882269515126723,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 108.0,
   "end_distance_m": 118.0,
   "start_elevation_m": 245.15974067270656,
   "end_elevation_m": 247.64796762421923,
   "min_gradient_pct": -2.7683301015525785
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.272873263289227,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 108.0,
   "end_distance_m": 128.0,
   "start_elevation_m": 245.15974067270656,
   "end_elevation_m": 250.0143153253644,
   "min_gradient_pct": -2.162772558228596
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.0602468883435,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 138.0,
   "end_distance_m": 163.0,
   "start_elevation_m": 252.3045070996368,
   "end_elevation_m": 258.31956882172267,
   "min_gradient_pct": -2.0175519541091944
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.922826321633465,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 108.0,
   "end_distance_m": 158.0,
   "start_elevation_m": 245.15974067270656,
   "end_elevation_m": 257.1211538335233,
   "min_gradient_pct": -1.743409080145625
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.24035483060925,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 95.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 242.54359534664047,
   "end_elevation_m": 262.7839501772497,
   "min_gradient_pct": -0.014567623301729782
  }
 ],
 "shape": {
  "ascent_concentration": 0.46,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 141.0,
  "shape_class": "stepped"
 },
 "length_m": 746.042991761428,
 "start_elevation_m": 234.47632402971675,
 "end_elevation_m": 304.30257889209804,
 "endpoint_gain_m": 69.82625486238129,
 "overall_gradient_pct": 9.359548395129293,
 "accumulated_ascent_m": 70.86674929636865,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.738242163844234,
   "start_distance_m": 112.0,
   "end_distance_m": 117.0,
   "midpoint_distance_m": 114.5,
   "start_elevation_m": 246.12660294813463,
   "end_elevation_m": 247.41351505632684,
   "start_xy": [
    594917.9198074425,
    4430641.797877236
   ],
   "end_xy": [
    594921.2255970791,
    4430638.0466434555
   ]
  },
  "max_10m": {
   "gradient_pct": 24.882269515126723,
   "start_distance_m": 108.0,
   "end_distance_m": 118.0,
   "midpoint_distance_m": 113.0,
   "start_elevation_m": 245.15974067270656,
   "end_elevation_m": 247.64796762421923,
   "start_xy": [
    594915.275175733,
    4430644.798864261
   ],
   "end_xy": [
    594921.8867550065,
    4430637.2963967
   ]
  },
  "max_20m": {
   "gradient_pct": 24.272873263289227,
   "start_distance_m": 108.0,
   "end_distance_m": 128.0,
   "midpoint_distance_m": 118.0,
   "start_elevation_m": 245.15974067270656,
   "end_elevation_m": 250.0143153253644,
   "start_xy": [
    594915.275175733,
    4430644.798864261
   ],
   "end_xy": [
    594928.49833428,
    4430629.793929138
   ]
  },
  "max_25m": {
   "gradient_pct": 24.0602468883435,
   "start_distance_m": 138.0,
   "end_distance_m": 163.0,
   "midpoint_distance_m": 150.5,
   "start_elevation_m": 252.3045070996368,
   "end_elevation_m": 258.31956882172267,
   "start_xy": [
    594935.1099135533,
    4430622.291461577
   ],
   "end_xy": [
    594951.638861737,
    4430603.535292673
   ]
  },
  "max_50m": {
   "gradient_pct": 23.922826321633465,
   "start_distance_m": 108.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 133.0,
   "start_elevation_m": 245.15974067270656,
   "end_elevation_m": 257.1211538335233,
   "start_xy": [
    594915.275175733,
    4430644.798864261
   ],
   "end_xy": [
    594948.3330721003,
    4430607.286526454
   ]
  },
  "max_100m": {
   "gradient_pct": 20.24035483060925,
   "start_distance_m": 95.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 145.0,
   "start_elevation_m": 242.54359534664047,
   "end_elevation_m": 262.7839501772497,
   "start_xy": [
    594906.6801226776,
    4430654.552072091
   ],
   "end_xy": [
    594942.4033421567,
    4430581.060928322
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.3903570485870205,
   "start_distance_m": 378.0,
   "end_distance_m": 383.0,
   "midpoint_distance_m": 380.5,
   "start_elevation_m": 278.3359617365178,
   "end_elevation_m": 278.16644388408844,
   "start_xy": [
    594806.3622433561,
    4430458.781042105
   ],
   "end_xy": [
    594802.5082801494,
    4430455.595611583
   ]
  },
  "min_10m": {
   "gradient_pct": -2.7683301015525785,
   "start_distance_m": 372.0,
   "end_distance_m": 382.0,
   "midpoint_distance_m": 377.0,
   "start_elevation_m": 278.46047664134204,
   "end_elevation_m": 278.1836436311868,
   "start_xy": [
    594810.9869992039,
    4430462.603558729
   ],
   "end_xy": [
    594803.2790727908,
    4430456.232697688
   ]
  },
  "min_20m": {
   "gradient_pct": -2.162772558228596,
   "start_distance_m": 369.0,
   "end_distance_m": 389.0,
   "midpoint_distance_m": 379.0,
   "start_elevation_m": 278.52820980822037,
   "end_elevation_m": 278.09565529657465,
   "start_xy": [
    594813.2993771279,
    4430464.514817041
   ],
   "end_xy": [
    594797.8835243016,
    4430451.773094959
   ]
  },
  "min_25m": {
   "gradient_pct": -2.0175519541091944,
   "start_distance_m": 361.0,
   "end_distance_m": 386.0,
   "midpoint_distance_m": 373.5,
   "start_elevation_m": 278.6262071272569,
   "end_elevation_m": 278.1218191387296,
   "start_xy": [
    594819.4657182584,
    4430469.611505874
   ],
   "end_xy": [
    594800.1959022254,
    4430453.6843532715
   ]
  },
  "min_50m": {
   "gradient_pct": -1.743409080145625,
   "start_distance_m": 360.0,
   "end_distance_m": 410.0,
   "midpoint_distance_m": 385.0,
   "start_elevation_m": 278.63753125006,
   "end_elevation_m": 277.7658267099872,
   "start_xy": [
    594820.2365108997,
    4430470.248591979
   ],
   "end_xy": [
    594781.6968788339,
    4430438.394286772
   ]
  },
  "min_100m": {
   "gradient_pct": -0.014567623301729782,
   "start_distance_m": 345.0,
   "end_distance_m": 445.0,
   "midpoint_distance_m": 395.0,
   "start_elevation_m": 278.54806496602595,
   "end_elevation_m": 278.5334973427242,
   "start_xy": [
    594831.7393582711,
    4430479.874968642
   ],
   "end_xy": [
    594754.4468614154,
    4430416.454777525
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.620695489397406,
   "start_distance_m": 114.0,
   "end_distance_m": 116.0,
   "midpoint_distance_m": 115.0,
   "start_elevation_m": 246.63842504780612,
   "end_elevation_m": 247.17083895759407,
   "start_xy": [
    594919.2421232971,
    4430640.297383725
   ],
   "end_xy": [
    594920.5644391518,
    4430638.796890212
   ]
  },
  "max_3m": {
   "gradient_pct": 26.400747897701155,
   "start_distance_m": 113.0,
   "end_distance_m": 116.0,
   "midpoint_distance_m": 114.5,
   "start_elevation_m": 246.37881652066304,
   "end_elevation_m": 247.17083895759407,
   "start_xy": [
    594918.5809653697,
    4430641.0476304805
   ],
   "end_xy": [
    594920.5644391518,
    4430638.796890212
   ]
  }
 },
 "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": 0.005,
   "windows_resited": [
    2.0,
    3.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    3.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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_x59y444_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T11:23:08+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-band1.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_WesternPA_2019_D20 (collected 2020)",
  "elevation_tile_ids": [
   "x59y444"
  ],
  "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": "Brownsville",
  "county": "Pennsylvania"
 }
}