Displays some information depending on the level in Pro Sites

Pro Sites - level check

<?php

global $wpdb;

$blog_id = $wpdb->blogid;
$sql = "SELECT level FROM {$wpdb->base_prefix}pro_sites WHERE blog_ID = '$blog_id'";
$level = $wpdb->get_var( $sql );
?>

<?php if ( $level == 1 ) : ?>
    Level 1 content here
<?php elseif ( $level == 2 ) : ?>
    Level 2 content here
<?php elseif ( $level == 3 ) : ?>
    Level 3 content here
<?php else : ?>
    Free level content here
<?php endif; ?>