{
 "ocl_version": "0.1.0",
 "name": "Via Fontanol",
 "slug": "via-fontanol",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 46.54626521019054,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3131.0,
   "end_distance_m": 3133.0,
   "start_elevation_m": 1069.7500771551915,
   "end_elevation_m": 1070.6810024593954,
   "min_gradient_pct": -61.877210251350334,
   "suppressed_max_gradient_pct": 101.65090696148127,
   "suppressed_location_m": [
    3547.0,
    3549.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 36.3922894495848,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3130.0,
   "end_distance_m": 3133.0,
   "start_elevation_m": 1069.5892337759078,
   "end_elevation_m": 1070.6810024593954,
   "min_gradient_pct": -47.21151616384608,
   "suppressed_max_gradient_pct": 101.04992744860131,
   "suppressed_location_m": [
    3546.0,
    3549.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.338905084929138,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3128.0,
   "end_distance_m": 3133.0,
   "start_elevation_m": 1069.264057205149,
   "end_elevation_m": 1070.6810024593954,
   "min_gradient_pct": -37.79547024634212,
   "suppressed_max_gradient_pct": 86.89105005159035,
   "suppressed_location_m": [
    3545.0,
    3550.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.576160782538864,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 3123.0,
   "end_distance_m": 3133.0,
   "start_elevation_m": 1068.6233863811415,
   "end_elevation_m": 1070.6810024593954,
   "min_gradient_pct": -28.944765416638347,
   "suppressed_max_gradient_pct": 61.91912600976593,
   "suppressed_location_m": [
    3541.0,
    3551.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.165026061932736,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1561.0,
   "end_distance_m": 1581.0,
   "start_elevation_m": 875.1731993395823,
   "end_elevation_m": 878.6062045519689,
   "min_gradient_pct": -18.597289724832535,
   "suppressed_max_gradient_pct": 42.45909697474758,
   "suppressed_location_m": [
    3535.0,
    3555.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 16.93495618616771,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1557.0,
   "end_distance_m": 1582.0,
   "start_elevation_m": 874.5537023394884,
   "end_elevation_m": 878.7874413860303,
   "min_gradient_pct": -12.278144439267635,
   "suppressed_max_gradient_pct": 37.94013180626007,
   "suppressed_location_m": [
    3525.0,
    3550.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.03200207243981,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1549.0,
   "end_distance_m": 1599.0,
   "start_elevation_m": 873.3159747578295,
   "end_elevation_m": 881.3319757940494,
   "min_gradient_pct": 0.37774720264042116,
   "suppressed_max_gradient_pct": 25.642620156694647,
   "suppressed_location_m": [
    3524.0,
    3574.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.66889580656084,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1554.0,
   "end_distance_m": 1654.0,
   "start_elevation_m": 874.1168163260256,
   "end_elevation_m": 889.7857121325865,
   "min_gradient_pct": 3.6108847501636774,
   "suppressed_max_gradient_pct": 19.40812692225336,
   "suppressed_location_m": [
    3524.0,
    3624.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.279,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 367.0,
  "shape_class": "sustained"
 },
 "length_m": 4126.8114757456015,
 "start_elevation_m": 692.4169160136724,
 "end_elevation_m": 1176.0910107763723,
 "endpoint_gain_m": 483.67409476269984,
 "overall_gradient_pct": 11.72028568800355,
 "accumulated_ascent_m": 492.2373018049086,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.338905084929138,
   "start_distance_m": 3128.0,
   "end_distance_m": 3133.0,
   "midpoint_distance_m": 3130.5,
   "start_elevation_m": 1069.264057205149,
   "end_elevation_m": 1070.6810024593954,
   "start_xy": [
    2728051.262523125,
    1125673.8223729997
   ],
   "end_xy": [
    2728052.9927896233,
    1125669.1361170067
   ]
  },
  "max_10m": {
   "gradient_pct": 20.576160782538864,
   "start_distance_m": 3123.0,
   "end_distance_m": 3133.0,
   "midpoint_distance_m": 3128.0,
   "start_elevation_m": 1068.6233863811415,
   "end_elevation_m": 1070.6810024593954,
   "start_xy": [
    2728049.2060296563,
    1125678.3798761116
   ],
   "end_xy": [
    2728052.9927896233,
    1125669.1361170067
   ]
  },
  "max_20m": {
   "gradient_pct": 17.165026061932736,
   "start_distance_m": 1561.0,
   "end_distance_m": 1581.0,
   "midpoint_distance_m": 1571.0,
   "start_elevation_m": 875.1731993395823,
   "end_elevation_m": 878.6062045519689,
   "start_xy": [
    2728445.4822097803,
    1125153.8516074303
   ],
   "end_xy": [
    2728457.1761368383,
    1125169.2689917265
   ]
  },
  "max_25m": {
   "gradient_pct": 16.93495618616771,
   "start_distance_m": 1557.0,
   "end_distance_m": 1582.0,
   "midpoint_distance_m": 1569.5,
   "start_elevation_m": 874.5537023394884,
   "end_elevation_m": 878.7874413860303,
   "start_xy": [
    2728442.0781951672,
    1125151.7533311103
   ],
   "end_xy": [
    2728457.2710947506,
    1125170.2644730145
   ]
  },
  "max_50m": {
   "gradient_pct": 16.03200207243981,
   "start_distance_m": 1549.0,
   "end_distance_m": 1599.0,
   "midpoint_distance_m": 1574.0,
   "start_elevation_m": 873.3159747578295,
   "end_elevation_m": 881.3319757940494,
   "start_xy": [
    2728435.1985707474,
    1125147.6816222412
   ],
   "end_xy": [
    2728458.3443692443,
    1125187.2301397847
   ]
  },
  "max_100m": {
   "gradient_pct": 15.66889580656084,
   "start_distance_m": 1554.0,
   "end_distance_m": 1654.0,
   "midpoint_distance_m": 1604.0,
   "start_elevation_m": 874.1168163260256,
   "end_elevation_m": 889.7857121325865,
   "start_xy": [
    2728439.51739688,
    1125150.190541255
   ],
   "end_xy": [
    2728453.127834247,
    1125241.2763308096
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -37.79547024634212,
   "start_distance_m": 3510.0,
   "end_distance_m": 3515.0,
   "midpoint_distance_m": 3512.5,
   "start_elevation_m": 1117.3504800069252,
   "end_elevation_m": 1115.460706494608,
   "start_xy": [
    2728003.6307230326,
    1125637.614734133
   ],
   "end_xy": [
    2728001.844210953,
    1125642.2846778787
   ]
  },
  "min_10m": {
   "gradient_pct": -28.944765416638347,
   "start_distance_m": 3508.0,
   "end_distance_m": 3518.0,
   "midpoint_distance_m": 3513.0,
   "start_elevation_m": 1117.7536774926625,
   "end_elevation_m": 1114.8592009509987,
   "start_xy": [
    2728004.345327865,
    1125635.7467566347
   ],
   "end_xy": [
    2728000.7626871075,
    1125645.0816161588
   ]
  },
  "min_20m": {
   "gradient_pct": -18.597289724832535,
   "start_distance_m": 3504.0,
   "end_distance_m": 3524.0,
   "midpoint_distance_m": 3514.0,
   "start_elevation_m": 1118.5057397290939,
   "end_elevation_m": 1114.7862817841274,
   "start_xy": [
    2728005.774537529,
    1125632.0108016382
   ],
   "end_xy": [
    2727997.3840956376,
    1125650.0399545578
   ]
  },
  "min_25m": {
   "gradient_pct": -12.278144439267635,
   "start_distance_m": 3499.0,
   "end_distance_m": 3524.0,
   "midpoint_distance_m": 3511.5,
   "start_elevation_m": 1117.8558178939443,
   "end_elevation_m": 1114.7862817841274,
   "start_xy": [
    2728007.481058327,
    1125627.3123528862
   ],
   "end_xy": [
    2727997.3840956376,
    1125650.0399545578
   ]
  },
  "min_50m": {
   "gradient_pct": 0.37774720264042116,
   "start_distance_m": 3474.0,
   "end_distance_m": 3524.0,
   "midpoint_distance_m": 3499.0,
   "start_elevation_m": 1114.5974081828072,
   "end_elevation_m": 1114.7862817841274,
   "start_xy": [
    2728016.99938905,
    1125604.2555046023
   ],
   "end_xy": [
    2727997.3840956376,
    1125650.0399545578
   ]
  },
  "min_100m": {
   "gradient_pct": 3.6108847501636774,
   "start_distance_m": 3861.0,
   "end_distance_m": 3961.0,
   "midpoint_distance_m": 3911.0,
   "start_elevation_m": 1163.7062694890053,
   "end_elevation_m": 1167.317154239169,
   "start_xy": [
    2727950.0401094775,
    1125615.082794032
   ],
   "end_xy": [
    2727934.249313931,
    1125521.3763224918
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 46.54626521019054,
   "start_distance_m": 3131.0,
   "end_distance_m": 3133.0,
   "midpoint_distance_m": 3132.0,
   "start_elevation_m": 1069.7500771551915,
   "end_elevation_m": 1070.6810024593954,
   "start_xy": [
    2728052.348616766,
    1125671.0295375434
   ],
   "end_xy": [
    2728052.9927896233,
    1125669.1361170067
   ]
  },
  "max_3m": {
   "gradient_pct": 36.3922894495848,
   "start_distance_m": 3130.0,
   "end_distance_m": 3133.0,
   "midpoint_distance_m": 3131.5,
   "start_elevation_m": 1069.5892337759078,
   "end_elevation_m": 1070.6810024593954,
   "start_xy": [
    2728052.0265303366,
    1125671.976247812
   ],
   "end_xy": [
    2728052.9927896233,
    1125669.1361170067
   ]
  }
 },
 "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": 0.008,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "placement_suppression": {
   "masked_fraction": 0.012,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    3500.0,
    3540.0
   ],
   [
    3544.0,
    3552.0
   ]
  ],
  "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:2056",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/ch/swissalti3d_2023_2727-1125_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2728-1125_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T21:05:30+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": [
   "2727-1125",
   "2728-1125"
  ],
  "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": "Buseno",
  "county": "Graub\u00fcnden/Grischun/Grigioni",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}