The interface that the traffic hit.
The traffic was not passed to another interface.
The source IP Address of the traffic
The destination IP Address
LEN=52 TOS=0x00 PREC=0x00 TTL=61 ID=60811 DF
Length, Type of Service, Precedence, Time To Live, Packet number, Don't Fragment.
The source port of the traffic
The destination port.
WINDOW=5840 RES=0x00 SYN URGP=0
Window size, Reserved field value, Synchronise flag is set and 'Urgent' flag status.
It's possible to spoof many of the fields to give false or nonsensical values, so the information is not necessarily accurate.
Eats shoots and leaves.