#! /usr/bin/gawk -f
BEGIN{
FS=",";
k=0;
}

i<=150 && NR>0{

#caluculate the new mean old mean,stdDev


s[k]+=$1;
i++
if((NR)%150==0)
{
i=0;
d[k]=NR;
s[k]=s[k]/150;
k++;

}
d[k]=NR
}

Pass=2{

# store the era mean then training mean then training standard deviation then instant count
}
END{

for (k in s)
{
print d[k] "\t"  s[k]}
}