How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 1/29100.0*Average seed
Gold Coast 1 Melbourne 0 +0.5
Brisbane 1 Sydney 0 +0.2
Week of 2/5100.0*Average seed
Gold Coast 0 Wellington 1 -0.4
Melbourne 2 North Queenslan 0 -0.2
Sydney 3 Perth 2 -0.1
Week of 2/12None
Points
Chance Will Make Playoffs