Hi all,

I have 50 hours of data, second by second in excel. I am trying to label
each point as 1 of 4 modes based on certain criteria. My 'Oxygen' is a
column that says if my oxygen is on or not. My UEGO is another column that
is either at 1 or 0.9. These are the criteria for the modes.

Mode 1 (~10sec):
Oxygen = 0
UEGO ~ 1

Mode 2 (~10 sec):
Oxygen = 0
UEGO ~ 0.9

Mode 3 (~5 sec):
Oxygen = 1
UEGO ~ 0.9

Mode 4 (~10 sec):
Oxygen = 1
UEGO ~1

I'd like to use arrays to label the data to make this process fast. My
array knowlege is a little weak.

Any help would be greatly appreciated!
Thanks!
Matt