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
Lethbridge 4 Regina 3 -0.1
Saskatchewan 2 Calgary 3 (ot)+0.0
Saskatchewan 2 Calgary 1 (ot)-0.1
Week of 2/19100.0*Chance in playoffs100.0*Average seed
Saskatchewan 4 Manitoba 1 -1.2
-0.3
Calgary 3 UBC 2 -0.7
Saskatchewan 4 Manitoba 1 -0.2
-0.3
Calgary 3 UBC 1 -0.2
Week of 2/27100.0*Chance in playoffs100.0*Average seed
Manitoba 5 Regina 3 +0.2
Lethbridge 2 Saskatchewan 3 (ot)-0.2
Points
Chance Will Make Playoffs