u/ssaaeecc

Hello guys, I’m fairly new to the research game and need your advice. For my medical research I have line charts. You can see the example on the picture. On the x Axis a different time stamps and Im comparing the time stamps to one another. My supervisor wants me to add significance asterisk and p-Values to the line charts. What is the most common depiction for that? Do you have examples how it should look?
(My supervisor is sadly not very helpful and expects me to figure is our by myself.)
PS: English is not my first language