I'm trying to count the number of values, within a column over multiple rows,
that fall within a range. I can do that with the COUNTIF function as follows:

=COUNTIF(Q6:Q53,"<31")

However, now I want to extend that to break of the counts by month. I have
a date in column C.

If I create twelve row, each with a month/year, I want to use the month/year
against column C. Something like below (which does not work).

=IF(format(C6:C53,"MMYY")=format(A1, "MMYY"),COUNTIF(Q6:Q53,"<31"),0)

where cell A1 contains a date like 1-Jul-2007. For cell B I would like a
count where the month/year in C6:C53 is Jul-2007 AND the value in the range
Q6:Q53 is less than 31.

Thanks
Leif