Try array-entering this formula in G11 and fill across to column K. Then simply copy that already selected range and paste to G15, G19, G23 and G27.
Formula: copy to clipboard
If you aren’t familiar with array-entered formulas array enter means the formula must be committed from edit mode by simultaneously pressing and holding down Ctrl and Shift while hitting Enter.
By the way. Your profile says Excel 2007. The upload is an .xls file. If backward compatibility is an issue this formula will not work there. The IFERROR function is not available until 2007.
Edit Had to edit. Posted wrong formula.
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