{
 "ocl_version": "0.1.0",
 "name": "Via Plaun da Crusch",
 "slug": "via-plaun-da-crusch",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 47.63113034688331,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 4752.0,
   "end_distance_m": 4754.0,
   "start_elevation_m": 1820.041573987184,
   "end_elevation_m": 1820.9941965941216,
   "min_gradient_pct": -16.421926352143146,
   "suppressed_max_gradient_pct": 60.7213707705796,
   "suppressed_location_m": [
    4853.0,
    4855.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 43.508177101322566,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 4670.0,
   "end_distance_m": 4673.0,
   "start_elevation_m": 1798.0868383194552,
   "end_elevation_m": 1799.3920836324949,
   "min_gradient_pct": -14.904070056771465,
   "suppressed_max_gradient_pct": 57.52306908110919,
   "suppressed_location_m": [
    4852.0,
    4855.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 40.89203355712016,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2640.0,
   "end_distance_m": 2645.0,
   "start_elevation_m": 1628.5625851951568,
   "end_elevation_m": 1630.6071868730128,
   "min_gradient_pct": -13.968716515005326,
   "suppressed_max_gradient_pct": 51.167257184306436,
   "suppressed_location_m": [
    4850.0,
    4855.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 39.03482750475405,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2673.0,
   "end_distance_m": 2683.0,
   "start_elevation_m": 1639.1804638038022,
   "end_elevation_m": 1643.0839465542776,
   "min_gradient_pct": -12.232212584224271,
   "suppressed_max_gradient_pct": 43.546198982248825,
   "suppressed_location_m": [
    4845.0,
    4855.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 37.02214259274797,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2668.0,
   "end_distance_m": 2688.0,
   "start_elevation_m": 1637.2340510365598,
   "end_elevation_m": 1644.6384795551094,
   "min_gradient_pct": -10.763630276204594,
   "suppressed_max_gradient_pct": 37.83943237748531,
   "suppressed_location_m": [
    4837.0,
    4857.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 36.28606433652749,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2668.0,
   "end_distance_m": 2693.0,
   "start_elevation_m": 1637.2340510365598,
   "end_elevation_m": 1646.3055671206916,
   "min_gradient_pct": -10.033584315735425,
   "lateral_min_pct": 35.77,
   "lateral_max_pct": 36.9
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 34.23155845743395,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2633.0,
   "end_distance_m": 2683.0,
   "start_elevation_m": 1625.9681673255607,
   "end_elevation_m": 1643.0839465542776,
   "min_gradient_pct": -8.241771254223295,
   "suppressed_max_gradient_pct": 34.75365736989306,
   "suppressed_location_m": [
    4805.0,
    4855.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 32.28536061498153,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2611.0,
   "end_distance_m": 2711.0,
   "start_elevation_m": 1618.9193237534173,
   "end_elevation_m": 1651.2046843683988,
   "min_gradient_pct": -6.302825802636562
  }
 ],
 "shape": {
  "ascent_concentration": 0.363,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 348.0,
  "shape_class": "sustained"
 },
 "length_m": 4882.676515762173,
 "start_elevation_m": 1248.3314873906268,
 "end_elevation_m": 1854.727156923831,
 "endpoint_gain_m": 606.3956695332042,
 "overall_gradient_pct": 12.419329185041198,
 "accumulated_ascent_m": 625.0900149642252,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 40.89203355712016,
   "start_distance_m": 2640.0,
   "end_distance_m": 2645.0,
   "midpoint_distance_m": 2642.5,
   "start_elevation_m": 1628.5625851951568,
   "end_elevation_m": 1630.6071868730128,
   "start_xy": [
    2713549.366140809,
    1177150.5440962776
   ],
   "end_xy": [
    2713544.4423309714,
    1177149.6745580758
   ]
  },
  "max_10m": {
   "gradient_pct": 39.03482750475405,
   "start_distance_m": 2673.0,
   "end_distance_m": 2683.0,
   "midpoint_distance_m": 2678.0,
   "start_elevation_m": 1639.1804638038022,
   "end_elevation_m": 1643.0839465542776,
   "start_xy": [
    2713517.0678687016,
    1177154.8236440804
   ],
   "end_xy": [
    2713507.135428767,
    1177155.1442563853
   ]
  },
  "max_20m": {
   "gradient_pct": 37.02214259274797,
   "start_distance_m": 2668.0,
   "end_distance_m": 2688.0,
   "midpoint_distance_m": 2678.0,
   "start_elevation_m": 1637.2340510365598,
   "end_elevation_m": 1644.6384795551094,
   "start_xy": [
    2713521.9532916253,
    1177153.7593871288
   ],
   "end_xy": [
    2713502.1387048424,
    1177154.963286723
   ]
  },
  "max_25m": {
   "gradient_pct": 36.28606433652749,
   "start_distance_m": 2668.0,
   "end_distance_m": 2693.0,
   "midpoint_distance_m": 2680.5,
   "start_elevation_m": 1637.2340510365598,
   "end_elevation_m": 1646.3055671206916,
   "start_xy": [
    2713521.9532916253,
    1177153.7593871288
   ],
   "end_xy": [
    2713497.1419809177,
    1177154.7823170607
   ]
  },
  "max_50m": {
   "gradient_pct": 34.23155845743395,
   "start_distance_m": 2633.0,
   "end_distance_m": 2683.0,
   "midpoint_distance_m": 2658.0,
   "start_elevation_m": 1625.9681673255607,
   "end_elevation_m": 1643.0839465542776,
   "start_xy": [
    2713556.2594745816,
    1177151.7614497596
   ],
   "end_xy": [
    2713507.135428767,
    1177155.1442563853
   ]
  },
  "max_100m": {
   "gradient_pct": 32.28536061498153,
   "start_distance_m": 2611.0,
   "end_distance_m": 2711.0,
   "midpoint_distance_m": 2661.0,
   "start_elevation_m": 1618.9193237534173,
   "end_elevation_m": 1651.2046843683988,
   "start_xy": [
    2713578.0731770294,
    1177149.907201271
   ],
   "end_xy": [
    2713479.153774788,
    1177154.130826277
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -13.968716515005326,
   "start_distance_m": 1965.0,
   "end_distance_m": 1970.0,
   "midpoint_distance_m": 1967.5,
   "start_elevation_m": 1523.545887441317,
   "end_elevation_m": 1522.8474516155668,
   "start_xy": [
    2714094.888039521,
    1177364.1985059904
   ],
   "end_xy": [
    2714093.9327366883,
    1177369.106397238
   ]
  },
  "min_10m": {
   "gradient_pct": -12.232212584224271,
   "start_distance_m": 1963.0,
   "end_distance_m": 1973.0,
   "midpoint_distance_m": 1968.0,
   "start_elevation_m": 1523.761891010756,
   "end_elevation_m": 1522.5386697523336,
   "start_xy": [
    2714095.2694302364,
    1177362.2352160278
   ],
   "end_xy": [
    2714093.359554989,
    1177372.0511319865
   ]
  },
  "min_20m": {
   "gradient_pct": -10.763630276204594,
   "start_distance_m": 4341.0,
   "end_distance_m": 4361.0,
   "midpoint_distance_m": 4351.0,
   "start_elevation_m": 1782.2457959509475,
   "end_elevation_m": 1780.0930698957065,
   "start_xy": [
    2713247.5545574524,
    1177581.2941825825
   ],
   "end_xy": [
    2713231.979119868,
    1177568.7480379934
   ]
  },
  "min_25m": {
   "gradient_pct": -10.033584315735425,
   "start_distance_m": 4337.0,
   "end_distance_m": 4362.0,
   "midpoint_distance_m": 4349.5,
   "start_elevation_m": 1782.5348552591045,
   "end_elevation_m": 1780.0264591801706,
   "start_xy": [
    2713250.6696449695,
    1177583.8034115003
   ],
   "end_xy": [
    2713231.200347989,
    1177568.120730764
   ]
  },
  "min_50m": {
   "gradient_pct": -8.241771254223295,
   "start_distance_m": 4334.0,
   "end_distance_m": 4384.0,
   "midpoint_distance_m": 4359.0,
   "start_elevation_m": 1782.6917276839947,
   "end_elevation_m": 1778.570842056883,
   "start_xy": [
    2713253.005960607,
    1177585.6853331886
   ],
   "end_xy": [
    2713213.23841495,
    1177555.4905569553
   ]
  },
  "min_100m": {
   "gradient_pct": -6.302825802636562,
   "start_distance_m": 4282.0,
   "end_distance_m": 4382.0,
   "midpoint_distance_m": 4332.0,
   "start_elevation_m": 1784.966194062943,
   "end_elevation_m": 1778.6633682603065,
   "start_xy": [
    2713300.702926873,
    1177604.1398423205
   ],
   "end_xy": [
    2713214.9389941557,
    1177556.543187168
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 47.63113034688331,
   "start_distance_m": 4752.0,
   "end_distance_m": 4754.0,
   "midpoint_distance_m": 4753.0,
   "start_elevation_m": 1820.041573987184,
   "end_elevation_m": 1820.9941965941216,
   "start_xy": [
    2712932.0218914715,
    1177402.7720088058
   ],
   "end_xy": [
    2712930.032337356,
    1177402.976151945
   ]
  },
  "max_3m": {
   "gradient_pct": 43.508177101322566,
   "start_distance_m": 4670.0,
   "end_distance_m": 4673.0,
   "midpoint_distance_m": 4671.5,
   "start_elevation_m": 1798.0868383194552,
   "end_elevation_m": 1799.3920836324949,
   "start_xy": [
    2713009.720393959,
    1177398.5945840497
   ],
   "end_xy": [
    2713007.788419043,
    1177400.889681635
   ]
  }
 },
 "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": 0.001,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    50.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    4851.0,
    4856.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ],
  "lateral_stability": {
   "offsets_m": [
    -1.0,
    -0.5,
    0.0,
    0.5,
    1.0
   ],
   "windows": [
    {
     "window_m": 25,
     "min_pct": 35.77,
     "max_pct": 36.9
    },
    {
     "window_m": 10,
     "min_pct": 41.32,
     "max_pct": 44.61
    },
    {
     "window_m": 5,
     "min_pct": 49.34,
     "max_pct": 51.56
    }
   ]
  }
 },
 "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_2712-1177_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2713-1176_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2713-1177_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2714-1176_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2714-1177_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T20:26:16+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": [
   "2712-1177",
   "2713-1176",
   "2713-1177",
   "2714-1176",
   "2714-1177"
  ],
  "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": "Sumvitg",
  "county": "Graub\u00fcnden/Grischun/Grigioni",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}