In-Situ Virtual HERMIT Tutorial - Manual (Page 18)

18 Software Features
3.2.3 Log Graph Tab (Graphical View of Downloaded Data)
This view shows a graph of the logged data for all the downloaded log files.
The data is always displayed, even if no active connection exists, because
this view shows logged data that has been downloaded into the Win-Situ
working directory.
(Note: Not real pump test data.)