# What is the difference between univariate and multivariate time series?

I have the following time series data:

index              Time        value_1  value_2  value_3
0        2016-04-01 06:00:10     1       5         2
1        2016-04-01 06:00:20     2       9         8
2        2016-04-01 06:00:30     3       5         1
3        2016-04-01 06:00:40     4       4         4
4        2016-04-01 06:00:50     3       4         5
6        2016-04-01 06:01:00     4       3         2


Is this a univariate or a multivariate time series? What is the difference between univariate and multivariate time series?

Considering the data you showed in the question, you are dealing with a multivariate time series, where value_1, value_2 andvalue_3 are three variables changing simultaneously over time.