Add Average Line in Stacked Graph?

[inthenetguy]

Hi everyone--

I'm trying to add a constant line going across a stacked graph. This constant is the average of all the data feeding the spreadsheet. I'm creating several graphs, though, so I'm looking for a way to define a custom line for each of the three variables in the stacked graph. I'm pulling my hair out...any ideas?

Thanks!
Mike

[wi_guy]

Can you send me the file so I can try to help?