How are these numbers calculated?

Big Games

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

Week of 2/12100.0*Chance in playoffs100.0*Average seed
Saskatchewan 2 Calgary 1 (ot)+1.7
+0.2
Lethbridge 4 Regina 3 -1.0
Lethbridge 4 Regina 1 -0.4
Saskatchewan 2 Calgary 3 (ot)-0.2
-0.1
Week of 2/19100.0*Chance in playoffs100.0*Average seed
Saskatchewan 4 Manitoba 1 In
+0.3
Calgary 3 UBC 1 -0.4
Saskatchewan 4 Manitoba 1 +0.3
Week of 2/27100.0*Chance in playoffs100.0*Average seed
Lethbridge 2 Saskatchewan 3 (ot)+0.2
Manitoba 5 Regina 3 -0.1
Points
Chance Will Make Playoffs