How are these numbers calculated?

Big Games

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

Week of 2/9100.0*Chance in playoffs100.0*Average seed
South End 4 4 South End 2 0 +2.1
+0.0
Week of 2/12100.0*Chance in playoffs100.0*Average seed
West End 3 2 South End 4 2 In
+0.0
Ottawa Centre 2 2 South End 1 7 In
+0.9
South End 2 0 South End 3 2 +0.3
-0.1
Games Above .500
Chance Will Make Playoffs