more information about mtgox api

[N0]

Hi.
I'm trying to analyze some info from the mtgox API but I'm not sure if I understand all the different values in the ticker correctly ("avg", "buy", "high", "last", "last_all", "last_local", "last_orig", "low", "sell", "vol", "vwap").
I'd be really happy if someone could explain to me the meaning of them or send me to some other resources.

my goal is to try and make a simple chart that will be similar to
http://bitcoin.clarkmoody.com/

[Endgame]

The bitcoin wiki has a fair bit of information on the ticker values: https://en.bitcoin.it/wiki/MtGox/API/HTTP/v0#0.2Fticker

[N0]

Thanks it helped a bit.
I think I need the market open and close prices but I couldn't understand how to get them from these values.
(or maybe I need to subscribe to another channel but from mtgox documentation it doesn't look like this data is anywhere else)