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
Brisbane 1 Sydney 0 -0.4
Gold Coast 1 Melbourne 0 -0.1
Week of 2/5100.0*Average seed
Sydney 3 Perth 2 +0.4
Gold Coast 0 Wellington 1 +0.2
Melbourne 2 North Queenslan 0 -0.2
Week of 2/12100.0*Average seed
Sydney 2 Melbourne 0 +0.6
Points
Chance Will Make Playoffs