No worries, let's see what we get.Zelenec said:You are right Joe. It's not perfect method at all, but it provides a rough approximation. I think I'll keep this coloumn for a while if maybe somebody finds it useable at least until we find any accurate method.
BTW, for consistency, I merged everybody's posts about Zelenec's spreadsheet into this thread (topic). Apologies if this steps on anyone's toes.