Hi
I have a matrix on sheet1 (2000 * 60), I2 TO BN2001, ,columns E,F,G is date
(year,month,day).
First row I2 to BN2 is labled.i sorted this matrix based on column G
(day)descending and expanded.
Then sorted again, based on column F (month) ascending and expanded.
As a result, my matrix is sorted and classified to many groups. for example:
first group include all days (31 Jan) of all years, and second group include
all days (30 Jan) all of years.
I need to a macro, when i run it,at first separate groups with 5 blank rows,
and then calculate mean of any column in each group and write
them(mean)under any column in to the first blank row.

Would you please help me, because i have 60 worksheet similar above, and
manual arrangment and calculation need to spend very time.

best regards