Sure,

=IF(ISNA(IF(VLOOKUP(A4,Sat!$A$16:$J$377,9,FALSE)0 ,VLOOKUP(A4,Sat!$A$16:$J$377,9,FALSE),"")),"",IF(V LOOKUP(A4,Sat!$A$16:$J$377,9,FALSE)0,VLOOKUP(A4,S at!$A$16:$J$377,9,FALSE),""))

Squeaky

"Steve" wrote:

This formula works if the data is present, however, I'm getting #N/A if the
lookup cell (A4) doesn't exist, which it may not on some days.

=IF(VLOOKUP(A4,Sat!$A$16:$J$377,9,FALSE)0,VLOOKUP (A4,Sat!$A$16:$J$377,9,FALSE),"")

Can this formula be modified to also produce "" if the data representing A4
does not exist ?

Thanks,

Steve