librenms-librenms/html/includes/graphs/device/wifi_clients.inc.php

<?php

require 'includes/graphs/common.inc.php';

$rrd_options .= ' -l 0 -E ';

$radio1 = $config['rrd_dir'].'/'.$device['hostname'].'/wificlients-radio1.rrd';
$radio2 = $config['rrd_dir'].'/'.$device['hostname'].'/wificlients-radio2.rrd';

if (file_exists($radio1)) {
    $rrd_options .= " COMMENT:'                           Cur   Min  Max\\n'";
    $rrd_options .= ' DEF:wificlients1='.$radio1.':wificlients:AVERAGE ';
    $rrd_options .= " LINE1:wificlients1#CC0000:'Clients on Radio1    ' ";
    $rrd_options .= ' GPRINT:wificlients1:LAST:%3.0lf ';
    $rrd_options .= ' GPRINT:wificlients1:MIN:%3.0lf ';
    $rrd_options .= ' GPRINT:wificlients1:MAX:%3.0lf\\\l ';
    if (file_exists($radio2)) {
        $rrd_options .= ' DEF:wificlients2='.$radio2.':wificlients:AVERAGE ';
        $rrd_options .= " LINE1:wificlients2#008C00:'Clients on Radio2    ' ";
        $rrd_options .= ' GPRINT:wificlients2:LAST:%3.0lf ';
        $rrd_options .= ' GPRINT:wificlients2:MIN:%3.0lf ';
        $rrd_options .= ' GPRINT:wificlients2:MAX:%3.0lf\\\l ';
    }
}