daily_oil_data
Time Series:
Start = c(1986, 1)
End = c(2019, 5)
Frequency = 365
   [1] 25.56000 26.00000 26.17667 26.35333 ...

meanf(daily_oil_data, h =2)
      Point Forecast   Lo 80    Hi 80     Lo 95    Hi 95
2019.0137       43.81279 5.94203 81.68355 -14.10818 101.7338
2019.0164       43.81279 5.94203 81.68355 -14.10818 101.7338