Using two tables to arrive at the correct number

Originally Posted by FDibbins

Try this...
=INDEX($B$5:$L$10,MATCH($M$1,$A$5:$A$10,0),MATCH(J1,$B$4:$F$4,0)+IF(I1=26,6,0))

This formula works beautifully! Could you please tell me what the +IF(I1=26,6,0)) represents?