A (not very elegant) possible solution:
Assumes the 12 values are in columns B to M.
In a spare column put this formula and copy down:
=IF(ISERROR(MATCH("below",$B2:$M2,0)),"",IF(AND(OFFSET($B2,0,MATCH("below",$B2:$M2,0))="below",OFFSET($B2,0,MATCH("below",$B2:$M2,0)+1)="below"),1,0))
If three consecutive values of "below" are found, it puts 1 in the column or
if less than 3, then 0. If there are no "below" ratings it is left blank.
You could then set your conditional formatting based on the value 1 in this
column.
HTH
> Thanks both,:)
>
[quoted text clipped - 3 lines]
> below over 3 consecutive weeks say at weeks 5,6,7 how would it work
> then?