I didnt ask what the value was, I asked what is needed to be done with it. When you send a ping to someone it sends that number, when their client sends the ping reply, what does it do with that number so I can get the correct lag.
Hammer receives it and subtracts the numeric value after the PING from his current $ctime to retrieve the difference between the ctime he sent the ping and when he got the response back.
on *:CTCPREPLY:PING*: echo $color(ctcp) -ati2 * Ping response from $nick is $duration($calc($ctime - $2)) $+ .