Assuming that the times are Excel numbers rather than text strings you
could use a formula along the lines of:

IF(End Time Cell - Start Time Cell < TIME(0,0,30),1,0)

Copy this down and cases where less than 30 seconds ar taken show a 1
in this column. You can autofilter based on this result to exclude the
cases taking less than 30 seconds.


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gatwickxx
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