Wireshark-dev: [Wireshark-dev] Arrival time in the packet's frame

From: "Nick Zando" <nick.zando@xxxxxxxxx>
Date: Mon, 18 Aug 2008 16:34:36 +0200
Hi all,
i'm trying to understand how is calculated the Arrival time in the packet's frame 1
I mean, if i do a "live capture" i can see :

Arrival Time : Aug, 18, 2008 16:29:47.93....

which fields of the packet header is used to get this information?

tnx in advance.

Nicola