stat=`awk '{if ( $1 != "#" ) {n++;a=a+$5;a2=a2+$5^2}}END{print a/n,sqrt((a2-a^2/n)/n)}' $file_stat`
array=(${stat// / })
echo 'average total energy ' ${array[0]}
stat=`awk '{if ( $1 != "#" ) {n++;a=a+$5;a2=a2+$5^2}}END{print a/n,sqrt((a2-a^2/n)/n)}' $file_stat`
array=(${stat// / })
echo 'average total energy ' ${array[0]}