How to produce the figure like this in root?

ROOT
1

How to produce the figure like this:

1693441917913
1693441917913808×605 35.1 KB

ROOT Version: 6.28/04
Platform: Ubuntu 20.04
Compiler: GCC 9.4.0

2

https://root.cern/doc/master/classTMultiGraph.html#MG01c

3

@couet , thank you for replying!