PING science.yru.ac.th (172.67.74.246) 56(84) bytes of data.
64 bytes from 172.67.74.246 (172.67.74.246): icmp_seq=1 ttl=60 time=4.75 ms
64 bytes from 172.67.74.246 (172.67.74.246): icmp_seq=2 ttl=60 time=4.55 ms
64 bytes from 172.67.74.246 (172.67.74.246): icmp_seq=3 ttl=60 time=4.57 ms

--- science.yru.ac.th ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 4.550/4.628/4.757/0.120 ms