{
 "ocl_version": "0.1.0",
 "name": "North 9th Street",
 "slug": "north-9th-street",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.76226708593208,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 271.0,
   "end_distance_m": 273.0,
   "start_elevation_m": 336.92870911446516,
   "end_elevation_m": 337.5039544561838,
   "min_gradient_pct": -2.522681436022367
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.758424673432575,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 270.0,
   "end_distance_m": 273.0,
   "start_elevation_m": 336.6712017159808,
   "end_elevation_m": 337.5039544561838,
   "min_gradient_pct": -2.4286157966836677
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.090082397050992,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 268.0,
   "end_distance_m": 273.0,
   "start_elevation_m": 336.14945033633126,
   "end_elevation_m": 337.5039544561838,
   "min_gradient_pct": -1.3752283868302584
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.7888778294747,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 263.0,
   "end_distance_m": 273.0,
   "start_elevation_m": 334.82506667323634,
   "end_elevation_m": 337.5039544561838,
   "min_gradient_pct": 0.13811230363842242
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.220043694294475,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 254.0,
   "end_distance_m": 274.0,
   "start_elevation_m": 332.50724939110603,
   "end_elevation_m": 337.7512581299649,
   "min_gradient_pct": 1.585872385674918
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.909956449484298,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 248.0,
   "end_distance_m": 273.0,
   "start_elevation_m": 331.02646534381273,
   "end_elevation_m": 337.5039544561838,
   "min_gradient_pct": 1.7820514134875793
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.851591553244816,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 227.0,
   "end_distance_m": 277.0,
   "start_elevation_m": 326.8735734826916,
   "end_elevation_m": 338.299369259314,
   "min_gradient_pct": 3.0611829706693925
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.944158754696787,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 239.0,
   "end_distance_m": 339.0,
   "start_elevation_m": 328.9742157676617,
   "end_elevation_m": 347.9183745223585,
   "min_gradient_pct": 4.539474044940732
  }
 ],
 "shape": {
  "ascent_concentration": 0.409,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 105.0,
  "shape_class": "sustained"
 },
 "length_m": 620.044472073544,
 "start_elevation_m": 309.98959260741225,
 "end_elevation_m": 374.9615507922364,
 "endpoint_gain_m": 64.97195818482413,
 "overall_gradient_pct": 10.478596473499042,
 "accumulated_ascent_m": 65.18184091983068,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.090082397050992,
   "start_distance_m": 268.0,
   "end_distance_m": 273.0,
   "midpoint_distance_m": 270.5,
   "start_elevation_m": 336.14945033633126,
   "end_elevation_m": 337.5039544561838,
   "start_xy": [
    617160.3126574854,
    4465628.917380167
   ],
   "end_xy": [
    617161.3528833033,
    4465633.807976271
   ]
  },
  "max_10m": {
   "gradient_pct": 26.7888778294747,
   "start_distance_m": 263.0,
   "end_distance_m": 273.0,
   "midpoint_distance_m": 268.0,
   "start_elevation_m": 334.82506667323634,
   "end_elevation_m": 337.5039544561838,
   "start_xy": [
    617159.2724316674,
    4465624.026784064
   ],
   "end_xy": [
    617161.3528833033,
    4465633.807976271
   ]
  },
  "max_20m": {
   "gradient_pct": 26.220043694294475,
   "start_distance_m": 254.0,
   "end_distance_m": 274.0,
   "midpoint_distance_m": 264.0,
   "start_elevation_m": 332.50724939110603,
   "end_elevation_m": 337.7512581299649,
   "start_xy": [
    617157.4000251953,
    4465615.223711078
   ],
   "end_xy": [
    617161.5609284668,
    4465634.786095492
   ]
  },
  "max_25m": {
   "gradient_pct": 25.909956449484298,
   "start_distance_m": 248.0,
   "end_distance_m": 273.0,
   "midpoint_distance_m": 260.5,
   "start_elevation_m": 331.02646534381273,
   "end_elevation_m": 337.5039544561838,
   "start_xy": [
    617156.1517542138,
    4465609.354995754
   ],
   "end_xy": [
    617161.3528833033,
    4465633.807976271
   ]
  },
  "max_50m": {
   "gradient_pct": 22.851591553244816,
   "start_distance_m": 227.0,
   "end_distance_m": 277.0,
   "midpoint_distance_m": 252.0,
   "start_elevation_m": 326.8735734826916,
   "end_elevation_m": 338.299369259314,
   "start_xy": [
    617151.7555980826,
    4465588.820907822
   ],
   "end_xy": [
    617162.1850639576,
    4465637.720453153
   ]
  },
  "max_100m": {
   "gradient_pct": 18.944158754696787,
   "start_distance_m": 239.0,
   "end_distance_m": 339.0,
   "midpoint_distance_m": 289.0,
   "start_elevation_m": 328.9742157676617,
   "end_elevation_m": 347.9183745223585,
   "start_xy": [
    617154.2793477416,
    4465600.551922767
   ],
   "end_xy": [
    617175.8825533027,
    4465698.187477849
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.3752283868302584,
   "start_distance_m": 411.0,
   "end_distance_m": 416.0,
   "midpoint_distance_m": 413.5,
   "start_elevation_m": 350.8276262887548,
   "end_elevation_m": 350.7588648694133,
   "start_xy": [
    617116.9062724187,
    4465728.661818262
   ],
   "end_xy": [
    617119.0107131007,
    4465732.334666233
   ]
  },
  "min_10m": {
   "gradient_pct": 0.13811230363842242,
   "start_distance_m": 610.0,
   "end_distance_m": 620.0,
   "midpoint_distance_m": 615.0,
   "start_elevation_m": 374.9475223660194,
   "end_elevation_m": 374.96133359638327,
   "start_xy": [
    617275.4734864682,
    4465772.029993875
   ],
   "end_xy": [
    617285.1549445484,
    4465774.533864767
   ]
  },
  "min_20m": {
   "gradient_pct": 1.585872385674918,
   "start_distance_m": 600.0,
   "end_distance_m": 620.0,
   "midpoint_distance_m": 610.0,
   "start_elevation_m": 374.6441591192483,
   "end_elevation_m": 374.96133359638327,
   "start_xy": [
    617265.637801533,
    4465770.6218973175
   ],
   "end_xy": [
    617285.1549445484,
    4465774.533864767
   ]
  },
  "min_25m": {
   "gradient_pct": 1.7820514134875793,
   "start_distance_m": 344.0,
   "end_distance_m": 369.0,
   "midpoint_distance_m": 356.5,
   "start_elevation_m": 348.41998696166485,
   "end_elevation_m": 348.86549981503674,
   "start_xy": [
    617176.2504067705,
    4465702.594779927
   ],
   "end_xy": [
    617151.9112514226,
    4465708.304904003
   ]
  },
  "min_50m": {
   "gradient_pct": 3.0611829706693925,
   "start_distance_m": 343.0,
   "end_distance_m": 393.0,
   "midpoint_distance_m": 368.0,
   "start_elevation_m": 348.39352004665733,
   "end_elevation_m": 349.924111531992,
   "start_xy": [
    617176.7753285362,
    4465702.086574204
   ],
   "end_xy": [
    617129.2751109251,
    4465715.942246942
   ]
  },
  "min_100m": {
   "gradient_pct": 4.539474044940732,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 309.98959260741225,
   "end_elevation_m": 314.529066652353,
   "start_xy": [
    617099.139,
    4465368.055
   ],
   "end_xy": [
    617122.7474811058,
    4465465.204695227
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.76226708593208,
   "start_distance_m": 271.0,
   "end_distance_m": 273.0,
   "midpoint_distance_m": 272.0,
   "start_elevation_m": 336.92870911446516,
   "end_elevation_m": 337.5039544561838,
   "start_xy": [
    617160.9367929761,
    4465631.85173783
   ],
   "end_xy": [
    617161.3528833033,
    4465633.807976271
   ]
  },
  "max_3m": {
   "gradient_pct": 27.758424673432575,
   "start_distance_m": 270.0,
   "end_distance_m": 273.0,
   "midpoint_distance_m": 271.5,
   "start_elevation_m": 336.6712017159808,
   "end_elevation_m": 337.5039544561838,
   "start_xy": [
    617160.7287478126,
    4465630.873618609
   ],
   "end_xy": [
    617161.3528833033,
    4465633.807976271
   ]
  }
 },
 "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": []
 },
 "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_x61y447_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T14:18:04+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": [
   "x61y447"
  ],
  "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": "Jeannette",
  "county": "Pennsylvania"
 }
}