Crystal Reports Conditional Formatting on Crosstab

Message

     Is it possible to conditionally format a crosstab table based on a comparison of the CurrentFieldValue and the row total in a crosstab?  I am trying to get the fields to flag when they are greater than average.

In this case:

Average of row A is 3.33 -  Aug should flag 
Average of row B is 1.66 - Aug should flag
Average of row C is 3.66 - June and July should flag

My crosstab looks like this:

description                  June               July           Aug               Total
A                                    3                   2               5                  10
B                                    1                   1               3                   5
C                                    5                   4               2                  11

In my brain, the calculation should look something like this:

If CurrentFieldValue > Total/12 then crYellow else crNoColor

I can't figure out what the field name of that Total field is.

Please help?