#original (for the 1st column):
$y = 0;
for ($x = 0; $x < 15; $x++) {
    push @newips, $ips[$x][$y];
}
#new code, gets the second column
$y = 1;
for ($x = 0; $x < 15; $x++) {
    push @num, $ips[$x][$y];
}

##</code><code>##

for ($x = 0; $x < 15; $x++) {
    push @newips, $ips[$x][0];
    push @num, $ips[$x][1];
}