When I make a point graph in excel, some of my data points are positioned
exactly on top of each other.
That's a problem, because my winter data has the same value as my summer
data. But now I can not see whether my summer data is hidden behind my winter
data or that maybe my summer data is altogether flawed and not in my graph at
all.
Of course I can use different markers for both data types, but I'd rather
use an offset option or something like that.

I use Excel 2003