{
 "ocl_version": "0.1.0",
 "name": "Via Suriert",
 "slug": "via-suriert",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.58341273727183,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 238.0,
   "end_distance_m": 240.0,
   "start_elevation_m": 1226.4594582211516,
   "end_elevation_m": 1227.011126475897,
   "min_gradient_pct": -4.1722928574017715
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.330225107357364,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 237.0,
   "end_distance_m": 240.0,
   "start_elevation_m": 1226.1912197226764,
   "end_elevation_m": 1227.011126475897,
   "min_gradient_pct": -3.375103936286905
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.234600140855036,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 238.0,
   "end_distance_m": 243.0,
   "start_elevation_m": 1226.4594582211516,
   "end_elevation_m": 1227.8211882281944,
   "min_gradient_pct": -1.6800651861967708
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.028196547721564,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 237.0,
   "end_distance_m": 247.0,
   "start_elevation_m": 1226.1912197226764,
   "end_elevation_m": 1228.8940393774485,
   "min_gradient_pct": 2.366713869266732
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.924732132943973,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 235.0,
   "end_distance_m": 255.0,
   "start_elevation_m": 1225.6683892550384,
   "end_elevation_m": 1230.8533356816272,
   "min_gradient_pct": 2.91142148963786
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.65961299485116,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 235.0,
   "end_distance_m": 260.0,
   "start_elevation_m": 1225.6683892550384,
   "end_elevation_m": 1232.0832925037512,
   "min_gradient_pct": 2.959359576674615
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 25.067099429943482,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 235.0,
   "end_distance_m": 285.0,
   "start_elevation_m": 1225.6683892550384,
   "end_elevation_m": 1238.2019389700101,
   "min_gradient_pct": 3.080953771271652
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 22.386421553636637,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 186.0,
   "end_distance_m": 286.0,
   "start_elevation_m": 1216.0389109529672,
   "end_elevation_m": 1238.4253325066038,
   "min_gradient_pct": 4.122436205571603
  }
 ],
 "shape": {
  "ascent_concentration": 0.504,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 143.0,
  "shape_class": "stepped"
 },
 "length_m": 286.8894924392199,
 "start_elevation_m": 1203.8915809472667,
 "end_elevation_m": 1238.6653269286978,
 "endpoint_gain_m": 34.77374598143115,
 "overall_gradient_pct": 12.120954896526326,
 "accumulated_ascent_m": 34.88443502568498,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.234600140855036,
   "start_distance_m": 238.0,
   "end_distance_m": 243.0,
   "midpoint_distance_m": 240.5,
   "start_elevation_m": 1226.4594582211516,
   "end_elevation_m": 1227.8211882281944,
   "start_xy": [
    2737191.3839754183,
    1185078.6859842998
   ],
   "end_xy": [
    2737192.612377613,
    1185083.5285846796
   ]
  },
  "max_10m": {
   "gradient_pct": 27.028196547721564,
   "start_distance_m": 237.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 242.0,
   "start_elevation_m": 1226.1912197226764,
   "end_elevation_m": 1228.8940393774485,
   "start_xy": [
    2737191.1931093396,
    1185077.704368214
   ],
   "end_xy": [
    2737193.7062416095,
    1185087.37611136
   ]
  },
  "max_20m": {
   "gradient_pct": 25.924732132943973,
   "start_distance_m": 235.0,
   "end_distance_m": 255.0,
   "midpoint_distance_m": 245.0,
   "start_elevation_m": 1225.6683892550384,
   "end_elevation_m": 1230.8533356816272,
   "start_xy": [
    2737190.811377181,
    1185075.7411360424
   ],
   "end_xy": [
    2737196.4003134468,
    1185094.886862409
   ]
  },
  "max_25m": {
   "gradient_pct": 25.65961299485116,
   "start_distance_m": 235.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 247.5,
   "start_elevation_m": 1225.6683892550384,
   "end_elevation_m": 1232.0832925037512,
   "start_xy": [
    2737190.811377181,
    1185075.7411360424
   ],
   "end_xy": [
    2737198.4444368915,
    1185099.4499270967
   ]
  },
  "max_50m": {
   "gradient_pct": 25.067099429943482,
   "start_distance_m": 235.0,
   "end_distance_m": 285.0,
   "midpoint_distance_m": 260.0,
   "start_elevation_m": 1225.6683892550384,
   "end_elevation_m": 1238.2019389700101,
   "start_xy": [
    2737190.811377181,
    1185075.7411360424
   ],
   "end_xy": [
    2737209.944096968,
    1185121.6322216617
   ]
  },
  "max_100m": {
   "gradient_pct": 22.386421553636637,
   "start_distance_m": 186.0,
   "end_distance_m": 286.0,
   "midpoint_distance_m": 236.0,
   "start_elevation_m": 1216.0389109529672,
   "end_elevation_m": 1238.4253325066038,
   "start_xy": [
    2737189.7015266065,
    1185026.8260145977
   ],
   "end_xy": [
    2737210.4473554157,
    1185122.4963576086
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.6800651861967708,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 1203.8915809472667,
   "end_elevation_m": 1203.8075776879568,
   "start_xy": [
    2737061.393,
    1184903.684
   ],
   "end_xy": [
    2737065.4694490912,
    1184906.579265585
   ]
  },
  "min_10m": {
   "gradient_pct": 2.366713869266732,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 1203.8915809472667,
   "end_elevation_m": 1204.1282523341933,
   "start_xy": [
    2737061.393,
    1184903.684
   ],
   "end_xy": [
    2737069.5458981823,
    1184909.4745311697
   ]
  },
  "min_20m": {
   "gradient_pct": 2.91142148963786,
   "start_distance_m": 82.0,
   "end_distance_m": 102.0,
   "midpoint_distance_m": 92.0,
   "start_elevation_m": 1207.5818116576204,
   "end_elevation_m": 1208.164095955548,
   "start_xy": [
    2737129.8434371976,
    1184948.790125553
   ],
   "end_xy": [
    2737146.287022564,
    1184960.1746984606
   ]
  },
  "min_25m": {
   "gradient_pct": 2.959359576674615,
   "start_distance_m": 67.0,
   "end_distance_m": 92.0,
   "midpoint_distance_m": 79.5,
   "start_elevation_m": 1207.1248678021493,
   "end_elevation_m": 1207.864707696318,
   "start_xy": [
    2737117.5107481726,
    1184940.2516958723
   ],
   "end_xy": [
    2737138.0652298806,
    1184954.482412007
   ]
  },
  "min_50m": {
   "gradient_pct": 3.080953771271652,
   "start_distance_m": 63.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 88.0,
   "start_elevation_m": 1207.0152959980528,
   "end_elevation_m": 1208.5557728836886,
   "start_xy": [
    2737114.213857382,
    1184937.9871501527
   ],
   "end_xy": [
    2737155.20095801,
    1184966.6065023798
   ]
  },
  "min_100m": {
   "gradient_pct": 4.122436205571603,
   "start_distance_m": 22.0,
   "end_distance_m": 122.0,
   "midpoint_distance_m": 72.0,
   "start_elevation_m": 1204.8171269480995,
   "end_elevation_m": 1208.939563153671,
   "start_xy": [
    2737079.5273404154,
    1184916.12747173
   ],
   "end_xy": [
    2737162.091728133,
    1184972.395914017
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.58341273727183,
   "start_distance_m": 238.0,
   "end_distance_m": 240.0,
   "midpoint_distance_m": 239.0,
   "start_elevation_m": 1226.4594582211516,
   "end_elevation_m": 1227.011126475897,
   "start_xy": [
    2737191.3839754183,
    1185078.6859842998
   ],
   "end_xy": [
    2737191.791979615,
    1185080.6429396693
   ]
  },
  "max_3m": {
   "gradient_pct": 27.330225107357364,
   "start_distance_m": 237.0,
   "end_distance_m": 240.0,
   "midpoint_distance_m": 238.5,
   "start_elevation_m": 1226.1912197226764,
   "end_elevation_m": 1227.011126475897,
   "start_xy": [
    2737191.1931093396,
    1185077.704368214
   ],
   "end_xy": [
    2737191.791979615,
    1185080.6429396693
   ]
  }
 },
 "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:2056",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/ch/swissalti3d_2023_2737-1184_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2737-1185_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T21:08:11+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-run6-260910",
  "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": [
   "2737-1184",
   "2737-1185"
  ],
  "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": "Falera",
  "county": "Graub\u00fcnden/Grischun/Grigioni",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}