How are these numbers calculated?

Big Games

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

Week of 1/9100.0*Chance in playoffs100.0*Average seed
Central Coast 3 Brisbane 4 -17.3
-0.6
Sydney 1 Wellington 0 +17.1
+0.2
Adelaide 2 Newcastle 0 -0.4
-0.1
Perth 3 Melbourne 2 +0.4
Adelaide 0 Brisbane 0 *-0.1
+0.0
Week of 1/16100.0*Chance in playoffs100.0*Average seed
Melbourne 3 Central Coast 0 -14.1
-0.4
Wellington 1 Adelaide 1 +8.2
+0.1
Brisbane 3 Sydney 1 +4.1
+0.0
Newcastle 2 Perth 1 -1.5
Week of 1/23100.0*Chance in playoffs100.0*Average seed
Melbourne 2 Wellington 0 In
+0.2

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

Points
Chance Will Make Playoffs