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 1 -2.3
-0.2
Saskatchewan 2 Calgary 3 (ot)-2.0
Lethbridge 4 Regina 3 Out
-0.1
Saskatchewan 2 Calgary 1 (ot)-0.1
Alberta 7 UBC 1 +0.0
Week of 2/19100.0*Chance in playoffs100.0*Average seed
Calgary 3 UBC 1 +0.0
Week of 2/27None
Points
Chance Will Make Playoffs