Thanks PHV for your reply:
But when i do it, i have this result:
On script:
BEGIN{ FS=" "; sum=0; iFinal=6;}
{
for(j=1;j<=40;++j)tsum[j]+=$j
{
if (NR<=iFinal)
{
sum=sum + $j;
if (NR==iFinal)
{
average=sum/6;
printf "%.4s\n", average;
}
}
else
{
iFinal=NR +5;
sum= $j...