{
 "ocl_version": "0.1.0",
 "name": "Alte Strasse",
 "slug": "alte-strasse",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.13231445496058,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 45.0,
   "end_distance_m": 47.0,
   "start_elevation_m": 1168.266996727362,
   "end_elevation_m": 1168.7296430164613,
   "min_gradient_pct": -46.468201650554875,
   "suppressed_max_gradient_pct": 62.66062135226775,
   "suppressed_location_m": [
    425.0,
    427.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.627446580099786,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 44.0,
   "end_distance_m": 47.0,
   "start_elevation_m": 1168.0508196190583,
   "end_elevation_m": 1168.7296430164613,
   "min_gradient_pct": -27.48229587482456,
   "suppressed_max_gradient_pct": 48.70273768037805,
   "suppressed_location_m": [
    425.0,
    428.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.723378951905033,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 45.0,
   "end_distance_m": 50.0,
   "start_elevation_m": 1168.266996727362,
   "end_elevation_m": 1169.4031656749573,
   "min_gradient_pct": -11.737029306559634,
   "suppressed_max_gradient_pct": 32.31266781846443,
   "suppressed_location_m": [
    425.0,
    430.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.595707743424555,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 40.0,
   "end_distance_m": 50.0,
   "start_elevation_m": 1167.2435949006149,
   "end_elevation_m": 1169.4031656749573,
   "min_gradient_pct": -8.788701003570623
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.851869395581843,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 33.0,
   "end_distance_m": 53.0,
   "start_elevation_m": 1165.8370173452818,
   "end_elevation_m": 1170.0073912243981,
   "min_gradient_pct": -8.153179955388623
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.374920569790447,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 32.0,
   "end_distance_m": 57.0,
   "start_elevation_m": 1165.6413905765442,
   "end_elevation_m": 1170.7351207189918,
   "min_gradient_pct": -7.98540489142124
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.647635161229573,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 176.0,
   "end_distance_m": 226.0,
   "start_elevation_m": 1187.1784587746847,
   "end_elevation_m": 1197.0022763552995,
   "min_gradient_pct": -7.042516515934494
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.002207685954545,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 137.0,
   "end_distance_m": 237.0,
   "start_elevation_m": 1181.4637686237,
   "end_elevation_m": 1198.4659763096545,
   "min_gradient_pct": -5.581749987982903
  }
 ],
 "shape": {
  "ascent_concentration": 0.574,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 111.0,
  "shape_class": "stepped"
 },
 "length_m": 993.125324428291,
 "start_elevation_m": 1163.177228105466,
 "end_elevation_m": 1220.5263577539104,
 "endpoint_gain_m": 57.34912964844443,
 "overall_gradient_pct": 5.774611545774286,
 "accumulated_ascent_m": 67.14068832891849,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.723378951905033,
   "start_distance_m": 45.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 47.5,
   "start_elevation_m": 1168.266996727362,
   "end_elevation_m": 1169.4031656749573,
   "start_xy": [
    2587609.613742363,
    1149598.0915039324
   ],
   "end_xy": [
    2587608.241941935,
    1149602.899445194
   ]
  },
  "max_10m": {
   "gradient_pct": 21.595707743424555,
   "start_distance_m": 40.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 45.0,
   "start_elevation_m": 1167.2435949006149,
   "end_elevation_m": 1169.4031656749573,
   "start_xy": [
    2587610.995896389,
    1149593.2863354003
   ],
   "end_xy": [
    2587608.241941935,
    1149602.899445194
   ]
  },
  "max_20m": {
   "gradient_pct": 20.851869395581843,
   "start_distance_m": 33.0,
   "end_distance_m": 53.0,
   "midpoint_distance_m": 43.0,
   "start_elevation_m": 1165.8370173452818,
   "end_elevation_m": 1170.0073912243981,
   "start_xy": [
    2587612.931883847,
    1149586.5593790694
   ],
   "end_xy": [
    2587607.8840746586,
    1149605.8714102805
   ]
  },
  "max_25m": {
   "gradient_pct": 20.374920569790447,
   "start_distance_m": 32.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 44.5,
   "start_elevation_m": 1165.6413905765442,
   "end_elevation_m": 1170.7351207189918,
   "start_xy": [
    2587613.208751814,
    1149585.5984711435
   ],
   "end_xy": [
    2587608.1705195056,
    1149609.8500878897
   ]
  },
  "max_50m": {
   "gradient_pct": 19.647635161229573,
   "start_distance_m": 176.0,
   "end_distance_m": 226.0,
   "midpoint_distance_m": 201.0,
   "start_elevation_m": 1187.1784587746847,
   "end_elevation_m": 1197.0022763552995,
   "start_xy": [
    2587658.869942881,
    1149714.728437519
   ],
   "end_xy": [
    2587660.4954542625,
    1149764.6981885456
   ]
  },
  "max_100m": {
   "gradient_pct": 17.002207685954545,
   "start_distance_m": 137.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 187.0,
   "start_elevation_m": 1181.4637686237,
   "end_elevation_m": 1198.4659763096545,
   "start_xy": [
    2587651.663705905,
    1149676.535661713
   ],
   "end_xy": [
    2587660.6264951113,
    1149775.69736801
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.737029306559634,
   "start_distance_m": 420.0,
   "end_distance_m": 425.0,
   "midpoint_distance_m": 422.5,
   "start_elevation_m": 1217.8158971791386,
   "end_elevation_m": 1217.2290457138106,
   "start_xy": [
    2587719.0446163514,
    1149948.5147576856
   ],
   "end_xy": [
    2587723.295542519,
    1149950.942049989
   ]
  },
  "min_10m": {
   "gradient_pct": -8.788701003570623,
   "start_distance_m": 561.0,
   "end_distance_m": 571.0,
   "midpoint_distance_m": 566.0,
   "start_elevation_m": 1217.7004968330205,
   "end_elevation_m": 1216.8216267326634,
   "start_xy": [
    2587848.6553781047,
    1149998.6877407995
   ],
   "end_xy": [
    2587856.966096297,
    1150004.2493893395
   ]
  },
  "min_20m": {
   "gradient_pct": -8.153179955388623,
   "start_distance_m": 557.0,
   "end_distance_m": 577.0,
   "midpoint_distance_m": 567.0,
   "start_elevation_m": 1217.9894644559129,
   "end_elevation_m": 1216.3588284648351,
   "start_xy": [
    2587845.3306910545,
    1149996.4636781565
   ],
   "end_xy": [
    2587861.9523138236,
    1150007.5866977135
   ]
  },
  "min_25m": {
   "gradient_pct": -7.98540489142124,
   "start_distance_m": 557.0,
   "end_distance_m": 582.0,
   "midpoint_distance_m": 569.5,
   "start_elevation_m": 1217.9894644559129,
   "end_elevation_m": 1215.9931132330576,
   "start_xy": [
    2587845.3306910545,
    1149996.4636781565
   ],
   "end_xy": [
    2587866.10755629,
    1150010.3676971088
   ]
  },
  "min_50m": {
   "gradient_pct": -7.042516515934494,
   "start_distance_m": 544.0,
   "end_distance_m": 594.0,
   "midpoint_distance_m": 569.0,
   "start_elevation_m": 1218.8081397894102,
   "end_elevation_m": 1215.286881531443,
   "start_xy": [
    2587834.5273161475,
    1149989.2326992708
   ],
   "end_xy": [
    2587876.058195452,
    1150017.074332038
   ]
  },
  "min_100m": {
   "gradient_pct": -5.581749987982903,
   "start_distance_m": 509.0,
   "end_distance_m": 609.0,
   "midpoint_distance_m": 559.0,
   "start_elevation_m": 1220.3159174890282,
   "end_elevation_m": 1214.7341675010452,
   "start_xy": [
    2587804.6474887156,
    1149971.1991311163
   ],
   "end_xy": [
    2587888.369835622,
    1150025.6430817787
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.13231445496058,
   "start_distance_m": 45.0,
   "end_distance_m": 47.0,
   "midpoint_distance_m": 46.0,
   "start_elevation_m": 1168.266996727362,
   "end_elevation_m": 1168.7296430164613,
   "start_xy": [
    2587609.613742363,
    1149598.0915039324
   ],
   "end_xy": [
    2587609.060735018,
    1149600.013529414
   ]
  },
  "max_3m": {
   "gradient_pct": 22.627446580099786,
   "start_distance_m": 44.0,
   "end_distance_m": 47.0,
   "midpoint_distance_m": 45.5,
   "start_elevation_m": 1168.0508196190583,
   "end_elevation_m": 1168.7296430164613,
   "start_xy": [
    2587609.8898817482,
    1149597.1303863782
   ],
   "end_xy": [
    2587609.060735018,
    1149600.013529414
   ]
  }
 },
 "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
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    422.0,
    429.0
   ]
  ],
  "review": [],
  "extent": [
   "descends_at_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_2025_2587-1149_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2587-1150_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2588-1149_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2025_2588-1150_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-15T21:27:40+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/switzerland-2026-09-10.osm.pbf",
  "osm_snapshot": "2026-09-09T20:21:20Z",
  "run_id": "retro-260915-dogleg-all",
  "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": [
   "2587-1149",
   "2587-1150",
   "2588-1149",
   "2588-1150"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Saanen",
  "county": "Bern/Berne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}