# How to use ARIMA to predict time series?

  Time            Volume
9/30/2019          2000
10/1/2019          1800
10/2/2019          1600
10/3/2019          1400
10/4/2019          1200
10/5/2019          1000
10/6/2019           800
10/7/2019           600
10/8/2019           400
10/9/2019          2000
10/10/2019         1800
10/11/2019         1600
10/12/2019         1400
10/13/2019         1200
10/14/2019         1000
10/15/2019          800
10/16/2019          600


I have this dataset with Volume consumption of a tank over period of time. The volume decreases with time and on 10/9/2019 the tank has a load-up and is full tank. I have data for over a year and would like to use ARIMA to predict when would the next load-up happen based on previous consumptions.