R的时间序列预测，单变量时间序列。

I am currently working on a project for school that requires me to perform time series forecasting in R on a given set of data. I have looked up countless examples on how to do this, but every example I find contains a dataset that records data, for example, once a month over the course of 15 years. The dataset given to me by my professor has recorded data for every .001 seconds, and there are multiple data entries for the same second. For example, at the end of the data there are five different entries for .02500 seconds. I am currently working on a project for school