I'm no expert, but he's what I can tell you.
HOP- These are the server/switches you "hop" from and to on your trip to HTC. 22 is a lot, but from aussiland not bad. Green is "good", yellow not so good, and red, bad. I've read that anything under 500ms (green and yellows) is ok for game play.
PL%- This is the important one, it stands for "Packet Lose %". All info sent on the internet is sent in packets. if your losing packets your losing info. In the game that could be hit damage, plane position info anything.
IP- Internet Protocal, it's the "numerical" name they give a hop (computer name)
DNSName- the name they give the hop (human name)
Avg- Avg time in milli seconds to that hop for this session (ms)
Cur- current time to that hop in milli seconds for this ping
Graph- image layout of your times to the different hops. Background colors match scale, green good, yellow not so good, and red bad.
So in the first picture you lost 40% of your packets that was sent in the ping, not good. Once you have a hop with lose like that the rest of the hops are suspect as some of the info lost at that hop might be that hop 19 was bad too.
The second picture, while not great is ok. There is no packet lose, and only one hop that is red. When running pingplotter I set mine to ping every second, and let it run for ten minutes. It's a lot of pings and it gives you a pretty good picture of what is going on.
So what your looking to see is no packet lose, your Avg and Cur times to be almost the same, and as much green as possible. Having your avg and cur times close means your connection is "stable" and consistent. A fast connection that has ping times jumping all over the place is worst than a slow ping time that is very consistent.
I wouldn't panic about a crappy connection right away. With what is going on in Japan the traffic has picked up a ton and that hop in Sydney may just be getting over whelmed at times. It may take a few weeks to settle down, but you might not have anything to "fix" at all.