Thanks DOM, pretty close giving it a try,

"Domenic" wrote:

Let's assume the following...

A2:A15 contains the date

B2:B15 contains the time

C2:C15 contains the 1

If B1 can remain empty, try...

D2:

=COUNT(C2:C15)

E2, copied down:

=IF(ROWS($E$2:E2)<=$D$2,INDEX($B$2:$B$15-$B$1:$B$14,SMALL(IF($C$2:$C$15=1
,ROW($C$2:$C$15)-ROW($C$2)+1),ROWS($E$2:E2))),"")

....confirmed with CONTROL+SHIFT+ENTER, not just ENTER.

If B1 contains a column header and can't remain empty, try...

D2:

=COUNT(C2:C15)

E2, copied down:

=IF(ROWS($E$2:E2)<=$D$2,SUM(N(OFFSET($B$2:$B$15,SM ALL(IF($C$2:$C$15=1,ROW
($C$2:$C$15)-ROW($C$2)+1),ROWS($E$2:E2))-{1,2},0,1))*{1,-1}),"")

....confirmed with CONTROL+SHIFT+ENTER.

Hope this helps!

In article ,
Tiger wrote:

Thnks Domenic,
COLUMN 1 Column 2 Column 3
2007-03-27 04:05:40 1 4:05
2007-03-27 04:21:40 1 0:16
2007-03-27 04:22:40 - -
2007-03-27 04:23:40 - -
2007-03-27 04:24:40 - -
2007-03-27 04:30:40 - -
2007-03-27 04:34:40 1 0:04
2007-03-27 04:35:40 - -
2007-03-27 04:36:40 - -


the columes are already seperated, just a bit hard to see, I am using a
program which returns time values into excel as an array where the length of
column values varies dependend upon operating houors, it also pastes a "1" at
random intervals in the next column, where there is a "1", I want to find
each occurnace and return the value in column 2, hoever need to do this using
an array formula so I end up with this at column 4


4:05
0:16
0:04

i.e no spaces.

cheers