awk 'BEGIN { tot1 = 0; count = 0; tot2 = 0; } { tot1 = tot1 + $5; tot2 = tot2 + $6; count = count+1; if (count == 5) { tot1 = tot1/5; tot2 = tot2/5; print $1,$2,$3,$4,tot1,tot2,$7 count=0; tot1=0; tot2=0; } }' $1