{
  "fields": [{"id":"_id","type":"int"},{"id":"fecha","type":"timestamp"},{"id":"valor","type":"float8"}],
  "records": [
    [1,"2024-01-01T00:00:00",null],
    [2,"2025-01-01T00:00:00",null],
    [3,"2026-01-01T00:00:00",null]
]}