{
 "ocl_version": "0.1.0",
 "name": "Feldstrasse",
 "slug": "feldstrasse",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 19.6132947418846,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 1050.0,
   "end_distance_m": 1052.0,
   "start_elevation_m": 1306.556675015956,
   "end_elevation_m": 1306.9489409107937,
   "min_gradient_pct": -391.46702068997,
   "suppressed_max_gradient_pct": 535.4024991964366,
   "suppressed_location_m": [
    0.0,
    2.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 18.72831632266146,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2160.0,
   "end_distance_m": 2163.0,
   "start_elevation_m": 1430.8132858811246,
   "end_elevation_m": 1431.3751353708044,
   "min_gradient_pct": -307.0709458990602,
   "suppressed_max_gradient_pct": 386.35179003206304,
   "suppressed_location_m": [
    0.0,
    3.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 18.346943594924596,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2160.0,
   "end_distance_m": 2165.0,
   "start_elevation_m": 1430.8132858811246,
   "end_elevation_m": 1431.7306330608708,
   "min_gradient_pct": -183.15498267560088,
   "suppressed_max_gradient_pct": 264.3942033076519,
   "suppressed_location_m": [
    0.0,
    5.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.950141070091377,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2158.0,
   "end_distance_m": 2168.0,
   "start_elevation_m": 1430.4661608370993,
   "end_elevation_m": 1432.2611749441085,
   "min_gradient_pct": -97.56265145766747,
   "suppressed_max_gradient_pct": 166.60157076676114,
   "suppressed_location_m": [
    0.0,
    10.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.621308105620983,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2152.0,
   "end_distance_m": 2172.0,
   "start_elevation_m": 1429.428860959687,
   "end_elevation_m": 1432.9531225808112,
   "min_gradient_pct": -82.31654506429095,
   "suppressed_max_gradient_pct": 116.47182123424386,
   "suppressed_location_m": [
    0.0,
    20.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.466969307651198,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2147.0,
   "end_distance_m": 2172.0,
   "start_elevation_m": 1428.5863802538984,
   "end_elevation_m": 1432.9531225808112,
   "min_gradient_pct": -76.5951298793043,
   "suppressed_max_gradient_pct": 103.85506847558736,
   "suppressed_location_m": [
    0.0,
    25.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.618295682607823,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2126.0,
   "end_distance_m": 2176.0,
   "start_elevation_m": 1425.247972440227,
   "end_elevation_m": 1433.5571202815308,
   "min_gradient_pct": -47.86331041363019,
   "suppressed_max_gradient_pct": 81.38821956769743,
   "suppressed_location_m": [
    0.0,
    50.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.5079164613569,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 2080.0,
   "end_distance_m": 2180.0,
   "start_elevation_m": 1418.6053783786906,
   "end_elevation_m": 1434.1132948400475,
   "min_gradient_pct": -31.956890131652926,
   "suppressed_max_gradient_pct": 59.939774822244544,
   "suppressed_location_m": [
    0.0,
    100.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.372,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 213.0,
  "shape_class": "sustained"
 },
 "length_m": 2271.677907796154,
 "start_elevation_m": 1197.2163934741245,
 "end_elevation_m": 1445.0882528071388,
 "endpoint_gain_m": 247.8718593330143,
 "overall_gradient_pct": 10.911399828397535,
 "accumulated_ascent_m": 313.3870794669117,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 18.346943594924596,
   "start_distance_m": 2160.0,
   "end_distance_m": 2165.0,
   "midpoint_distance_m": 2162.5,
   "start_elevation_m": 1430.8132858811246,
   "end_elevation_m": 1431.7306330608708,
   "start_xy": [
    2631657.986221026,
    1120516.9701591365
   ],
   "end_xy": [
    2631662.976518568,
    1120517.281495677
   ]
  },
  "max_10m": {
   "gradient_pct": 17.950141070091377,
   "start_distance_m": 2158.0,
   "end_distance_m": 2168.0,
   "midpoint_distance_m": 2163.0,
   "start_elevation_m": 1430.4661608370993,
   "end_elevation_m": 1432.2611749441085,
   "start_xy": [
    2631655.9901020094,
    1120516.8456245202
   ],
   "end_xy": [
    2631665.9706970933,
    1120517.4682976014
   ]
  },
  "max_20m": {
   "gradient_pct": 17.621308105620983,
   "start_distance_m": 2152.0,
   "end_distance_m": 2172.0,
   "midpoint_distance_m": 2162.0,
   "start_elevation_m": 1429.428860959687,
   "end_elevation_m": 1432.9531225808112,
   "start_xy": [
    2631650.0017449586,
    1120516.4720206715
   ],
   "end_xy": [
    2631669.9629351273,
    1120517.717366834
   ]
  },
  "max_25m": {
   "gradient_pct": 17.466969307651198,
   "start_distance_m": 2147.0,
   "end_distance_m": 2172.0,
   "midpoint_distance_m": 2159.5,
   "start_elevation_m": 1428.5863802538984,
   "end_elevation_m": 1432.9531225808112,
   "start_xy": [
    2631645.0114474166,
    1120516.1606841309
   ],
   "end_xy": [
    2631669.9629351273,
    1120517.717366834
   ]
  },
  "max_50m": {
   "gradient_pct": 16.618295682607823,
   "start_distance_m": 2126.0,
   "end_distance_m": 2176.0,
   "midpoint_distance_m": 2151.0,
   "start_elevation_m": 1425.247972440227,
   "end_elevation_m": 1433.5571202815308,
   "start_xy": [
    2631624.1970981224,
    1120513.5369738992
   ],
   "end_xy": [
    2631673.5992705696,
    1120519.2958180201
   ]
  },
  "max_100m": {
   "gradient_pct": 15.5079164613569,
   "start_distance_m": 2080.0,
   "end_distance_m": 2180.0,
   "midpoint_distance_m": 2130.0,
   "start_elevation_m": 1418.6053783786906,
   "end_elevation_m": 1434.1132948400475,
   "start_xy": [
    2631578.470989908,
    1120508.8257081476
   ],
   "end_xy": [
    2631677.181944769,
    1120521.0747068813
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -183.15498267560088,
   "start_distance_m": 226.0,
   "end_distance_m": 231.0,
   "midpoint_distance_m": 228.5,
   "start_elevation_m": 1225.664267576204,
   "end_elevation_m": 1216.506518442424,
   "start_xy": [
    2632028.7341633304,
    1120004.5143189556
   ],
   "end_xy": [
    2632027.738700324,
    1119999.614415548
   ]
  },
  "min_10m": {
   "gradient_pct": -97.56265145766747,
   "start_distance_m": 117.0,
   "end_distance_m": 127.0,
   "midpoint_distance_m": 122.0,
   "start_elevation_m": 1254.383687025319,
   "end_elevation_m": 1244.6274218795522,
   "start_xy": [
    2632055.1097056423,
    1120110.1176774732
   ],
   "end_xy": [
    2632051.789894475,
    1120100.6848171533
   ]
  },
  "min_20m": {
   "gradient_pct": -82.31654506429095,
   "start_distance_m": 117.0,
   "end_distance_m": 137.0,
   "midpoint_distance_m": 127.0,
   "start_elevation_m": 1254.383687025319,
   "end_elevation_m": 1237.9203780124608,
   "start_xy": [
    2632055.1097056423,
    1120110.1176774732
   ],
   "end_xy": [
    2632048.470083308,
    1120091.2519568333
   ]
  },
  "min_25m": {
   "gradient_pct": -76.5951298793043,
   "start_distance_m": 107.0,
   "end_distance_m": 132.0,
   "midpoint_distance_m": 119.5,
   "start_elevation_m": 1259.599641613538,
   "end_elevation_m": 1240.450859143712,
   "start_xy": [
    2632059.348920359,
    1120119.1615096934
   ],
   "end_xy": [
    2632050.1299888915,
    1120095.9683869933
   ]
  },
  "min_50m": {
   "gradient_pct": -47.86331041363019,
   "start_distance_m": 180.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 205.0,
   "start_elevation_m": 1240.37106258609,
   "end_elevation_m": 1216.4394073792748,
   "start_xy": [
    2632038.239827436,
    1120049.51824586
   ],
   "end_xy": [
    2632027.9377929256,
    1120000.5943962296
   ]
  },
  "min_100m": {
   "gradient_pct": -31.956890131652926,
   "start_distance_m": 104.0,
   "end_distance_m": 204.0,
   "midpoint_distance_m": 154.0,
   "start_elevation_m": 1260.5387676286568,
   "end_elevation_m": 1228.581877497004,
   "start_xy": [
    2632060.686594669,
    1120121.8467708428
   ],
   "end_xy": [
    2632033.1142005567,
    1120026.0738939492
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 19.6132947418846,
   "start_distance_m": 1050.0,
   "end_distance_m": 1052.0,
   "midpoint_distance_m": 1051.0,
   "start_elevation_m": 1306.556675015956,
   "end_elevation_m": 1306.9489409107937,
   "start_xy": [
    2631880.4900972345,
    1120178.5216903426
   ],
   "end_xy": [
    2631878.840616002,
    1120179.6527127407
   ]
  },
  "max_3m": {
   "gradient_pct": 18.72831632266146,
   "start_distance_m": 2160.0,
   "end_distance_m": 2163.0,
   "midpoint_distance_m": 2161.5,
   "start_elevation_m": 1430.8132858811246,
   "end_elevation_m": 1431.3751353708044,
   "start_xy": [
    2631657.986221026,
    1120516.9701591365
   ],
   "end_xy": [
    2631660.9803995513,
    1120517.1569610608
   ]
  }
 },
 "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": 0.109,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "placement_suppression": {
   "masked_fraction": 0.109,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    246.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "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_2024_2631-1119_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2024_2631-1120_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2024_2632-1119_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2024_2632-1120_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T20:16:02+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": [
   "2631-1119",
   "2631-1120",
   "2632-1119",
   "2632-1120"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "mask_basin_extension_m": 10.0,
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "T\u00f6rbel",
  "county": "Valais/Wallis",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}