{
    if(NR<=12)
    {
	if( $1>=$2 )
	{
	    printf("%0.2f %.9f %.9f %.9f\n", NR+offset, $1, $1-$2, $1+$2)
	}
	else
	{
	    printf("%0.2f %.9f 0 %.9f\n", NR+offset, $1, $1+$2)
	}
    }
}