PING cuni.cz (195.113.89.54) 56(84) bytes of data.
64 bytes from dg.is.cuni.cz (195.113.89.54): icmp_seq=1 ttl=57 time=15.5 ms
64 bytes from dg.is.cuni.cz (195.113.89.54): icmp_seq=2 ttl=57 time=15.3 ms
64 bytes from dg.is.cuni.cz (195.113.89.54): icmp_seq=3 ttl=57 time=15.1 ms

--- cuni.cz ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 15.143/15.347/15.575/0.177 ms