Display number of packets for major IP protocols as a function of time.
The x-axis is IP protocol, y-axis is time and z-axis is number of packets.
| x | IP protocol | IP protocol number |
| 0 | ICMP | 1 |
| 1 | IGMP | 2 |
| 2 | IP in IP (encapsulation) | 4 |
| 3 | TCP | 6 |
| 4 | UDP | 17 |
| 5 | AX.25 | 93 |
| 6 | Others |