I have a spreadsheet of data that will be increasing in number of rows and
number of columns, but within that data starting from cell "J1" I need to
average together the data in every five rows then move over 5 columns and
average together every five rows in that column. This needs to continue
until the column is blank (except for the value in the header in row 1).
Actually, if it helps the columns that I need to identify these averages will
always have the title "Output" in header row.

Any assistance with code would be greatly appreciated!

Thanks,
Holly