{
 "ocl_version": "0.1.0",
 "name": "Via S\u00e9lva",
 "slug": "via-selva",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.062666802292142,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 146.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 464.7499403596487,
   "end_elevation_m": 465.21119369569453,
   "min_gradient_pct": -1.689196902438539
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.5536532042867,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 145.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 464.50458409956593,
   "end_elevation_m": 465.21119369569453,
   "min_gradient_pct": -1.4095826633744462
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.53676711582102,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 143.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 464.0843553399035,
   "end_elevation_m": 465.21119369569453,
   "min_gradient_pct": -0.9535311647800881
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.485224187837503,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 138.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 462.9626712769108,
   "end_elevation_m": 465.21119369569453,
   "min_gradient_pct": 0.09029340406755182
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.032708026475234,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 128.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 460.8046520903995,
   "end_elevation_m": 465.21119369569453,
   "min_gradient_pct": 1.4567733822590867
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.665091154879065,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 123.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 459.79492090697477,
   "end_elevation_m": 465.21119369569453,
   "min_gradient_pct": 2.0263337244991817
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.33292537003365,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 99.0,
   "end_distance_m": 149.0,
   "start_elevation_m": 454.7486436085337,
   "end_elevation_m": 465.41510629355054,
   "min_gradient_pct": 4.632041240795502
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.016976537412518,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 98.0,
   "end_distance_m": 198.0,
   "start_elevation_m": 454.5515484250081,
   "end_elevation_m": 474.5685249624206,
   "min_gradient_pct": 7.058781066699169
  }
 ],
 "shape": {
  "ascent_concentration": 0.384,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 195.0,
  "shape_class": "sustained"
 },
 "length_m": 344.303960633155,
 "start_elevation_m": 444.82372563737545,
 "end_elevation_m": 489.7360831467298,
 "endpoint_gain_m": 44.912357509354365,
 "overall_gradient_pct": 13.044391771376418,
 "accumulated_ascent_m": 44.965301802902275,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.53676711582102,
   "start_distance_m": 143.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 145.5,
   "start_elevation_m": 464.0843553399035,
   "end_elevation_m": 465.21119369569453,
   "start_xy": [
    2710497.8982008747,
    1093962.784930042
   ],
   "end_xy": [
    2710495.5240051267,
    1093958.3845673923
   ]
  },
  "max_10m": {
   "gradient_pct": 22.485224187837503,
   "start_distance_m": 138.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 143.0,
   "start_elevation_m": 462.9626712769108,
   "end_elevation_m": 465.21119369569453,
   "start_xy": [
    2710500.2727531446,
    1093967.1851005633
   ],
   "end_xy": [
    2710495.5240051267,
    1093958.3845673923
   ]
  },
  "max_20m": {
   "gradient_pct": 22.032708026475234,
   "start_distance_m": 128.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 138.0,
   "start_elevation_m": 460.8046520903995,
   "end_elevation_m": 465.21119369569453,
   "start_xy": [
    2710505.2321291496,
    1093975.856093708
   ],
   "end_xy": [
    2710495.5240051267,
    1093958.3845673923
   ]
  },
  "max_25m": {
   "gradient_pct": 21.665091154879065,
   "start_distance_m": 123.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 135.5,
   "start_elevation_m": 459.79492090697477,
   "end_elevation_m": 465.21119369569453,
   "start_xy": [
    2710508.1256832983,
    1093979.933757592
   ],
   "end_xy": [
    2710495.5240051267,
    1093958.3845673923
   ]
  },
  "max_50m": {
   "gradient_pct": 21.33292537003365,
   "start_distance_m": 99.0,
   "end_distance_m": 149.0,
   "midpoint_distance_m": 124.0,
   "start_elevation_m": 454.7486436085337,
   "end_elevation_m": 465.41510629355054,
   "start_xy": [
    2710522.1218373785,
    1093999.4292414312
   ],
   "end_xy": [
    2710495.011239066,
    1093957.5263266906
   ]
  },
  "max_100m": {
   "gradient_pct": 20.016976537412518,
   "start_distance_m": 98.0,
   "end_distance_m": 198.0,
   "midpoint_distance_m": 148.0,
   "start_elevation_m": 454.5515484250081,
   "end_elevation_m": 474.5685249624206,
   "start_xy": [
    2710522.7138077808,
    1094000.235201134
   ],
   "end_xy": [
    2710466.911773021,
    1093984.875098976
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.9535311647800881,
   "start_distance_m": 37.0,
   "end_distance_m": 42.0,
   "midpoint_distance_m": 39.5,
   "start_elevation_m": 447.85699172122804,
   "end_elevation_m": 447.80931516298904,
   "start_xy": [
    2710557.747955962,
    1094049.5701937713
   ],
   "end_xy": [
    2710554.598927283,
    1094045.7032837828
   ]
  },
  "min_10m": {
   "gradient_pct": 0.09029340406755182,
   "start_distance_m": 33.0,
   "end_distance_m": 43.0,
   "midpoint_distance_m": 38.0,
   "start_elevation_m": 447.8090735043817,
   "end_elevation_m": 447.8181028447884,
   "start_xy": [
    2710560.5132602425,
    1094052.4554833134
   ],
   "end_xy": [
    2710554.0436334684,
    1094044.8716295715
   ]
  },
  "min_20m": {
   "gradient_pct": 1.4567733822590867,
   "start_distance_m": 25.0,
   "end_distance_m": 45.0,
   "midpoint_distance_m": 35.0,
   "start_elevation_m": 447.5930463437605,
   "end_elevation_m": 447.8844010202123,
   "start_xy": [
    2710567.075917183,
    1094057.022502197
   ],
   "end_xy": [
    2710552.933672977,
    1094043.2079025535
   ]
  },
  "min_25m": {
   "gradient_pct": 2.0263337244991817,
   "start_distance_m": 23.0,
   "end_distance_m": 48.0,
   "midpoint_distance_m": 35.5,
   "start_elevation_m": 447.50535504309556,
   "end_elevation_m": 448.01193847422036,
   "start_xy": [
    2710568.779903438,
    1094058.067628047
   ],
   "end_xy": [
    2710551.4619994094,
    1094040.6001960784
   ]
  },
  "min_50m": {
   "gradient_pct": 4.632041240795502,
   "start_distance_m": 294.0,
   "end_distance_m": 344.0,
   "midpoint_distance_m": 319.0,
   "start_elevation_m": 487.4150044978856,
   "end_elevation_m": 489.73102511828336,
   "start_xy": [
    2710438.075425055,
    1093927.652002202
   ],
   "end_xy": [
    2710436.8563649133,
    1093877.6668713926
   ]
  },
  "min_100m": {
   "gradient_pct": 7.058781066699169,
   "start_distance_m": 244.0,
   "end_distance_m": 344.0,
   "midpoint_distance_m": 294.0,
   "start_elevation_m": 482.6722440515842,
   "end_elevation_m": 489.73102511828336,
   "start_xy": [
    2710441.004320199,
    1093977.4410166102
   ],
   "end_xy": [
    2710436.8563649133,
    1093877.6668713926
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.062666802292142,
   "start_distance_m": 146.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 147.0,
   "start_elevation_m": 464.7499403596487,
   "end_elevation_m": 465.21119369569453,
   "start_xy": [
    2710496.473993252,
    1093960.1445453926
   ],
   "end_xy": [
    2710495.5240051267,
    1093958.3845673923
   ]
  },
  "max_3m": {
   "gradient_pct": 23.5536532042867,
   "start_distance_m": 145.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 146.5,
   "start_elevation_m": 464.50458409956593,
   "end_elevation_m": 465.21119369569453,
   "start_xy": [
    2710496.948987314,
    1093961.024534393
   ],
   "end_xy": [
    2710495.5240051267,
    1093958.3845673923
   ]
  }
 },
 "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"
  ]
 },
 "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:2056",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/ch/swissalti3d_2022_2710-1093_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2022_2710-1094_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T01:08:36+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/switzerland-2026-09-10-batch.osm.pbf",
  "osm_snapshot": "",
  "run_id": "ch-run6-extent-260911",
  "elevation_provider": "swisstopo swissALTI3D",
  "elevation_licence": "swisstopo open government data (OGD): free use, attribution '\u00a9 swisstopo' \u2014 https://www.swisstopo.admin.ch/en/terms-and-conditions",
  "elevation_dataset": "swissALTI3D 0.5 m DTM (Federal Office of Topography swisstopo)",
  "elevation_tile_ids": [
   "2710-1093",
   "2710-1094"
  ],
  "route_base_cut_m": 364.5,
  "climb_origin": "discovered",
  "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"
 },
 "area": {
  "place": "Pura",
  "county": "Ticino",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}