Hi,

I have a grid which is displaying information like this:

Age   5yrs   10yrs   20yrs
50    1235   1345   7676576
50    3234   54365  658678
50    87668  87699  768898
50    76576  65767  09809
55    876987 090980 09809
55    765876 989878 768767
55    876876 785457 6757687
55    654655 435354 6546565
60...

and so on, in groups of 4 records per each age.

I want to highlight alternating groups to make it easier to read. What formula can i use to do this?

Thanks.