how to iterate through this object and assign values to date and HerdProdAvg
[
["Date", "HerdProdAvg"],
[{
"v": "2021-09-12T00:00:00.000Z",
"f": "9/12/2021",
"dt": "2021-09-12T00:00:00.000-03:00"
},
39.476939890710376
],
[{
"v": "2021-09-11T00:00:00.000Z",
"f": "9/11/2021",
"dt": "2021-09-11T00:00:00.000-03:00"
},
40.456830601092925
],
]