{
  "series_id": "DGS10",
  "realtime_start": "2026-01-01",
  "realtime_end": "2026-03-12",
  "observations": [
    {"date": "2026-03-10", "value": 4.32},
    {"date": "2026-03-09", "value": 4.28},
    {"date": "2026-03-06", "value": 4.35},
    {"date": "2026-03-05", "value": 4.41}
  ]
}