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*Chance in playoffs100.0*Relegated100.0*Average seed
Wellington 1 Adelaide 0 +11.8
No
+0.4
Brisbane 1 Sydney 0 -5.8
-0.1
Perth 3 Central Coast 1 +1.6
-0.2
North Queenslan 2 Newcastle 1 +0.2
Week of 2/5100.0*Chance in playoffs100.0*Relegated100.0*Average seed
Adelaide 2 Brisbane 0 In
+0.1
Melbourne 2 North Queenslan 0 +0.7
Gold Coast 0 Wellington 1 +0.6
Central Coast 3 Newcastle 0 +0.2
Sydney 3 Perth 2 +0.1
Week of 2/12100.0*Chance in playoffs100.0*Relegated100.0*Average seed
Wellington 3 Central Coast 0 +0.3
Points
Chance Will Make Playoffs