How are these numbers calculated?

Big Games

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

Week of 1/26100.0*Chance in playoffs100.0*Average seed
Rebels 2 Bees 4 -12.5
-0.4
Thrashers 3 Rebels 1 -11.3
-0.6
Hawks 11 Pylons 1 +6.8
+0.1
Knights 5 Pucks 4 +2.1
Stars 1 Showers 7 -1.6
-0.1
Stars 2 Gunners 6 -1.5
-0.1
Shockers 6 Gunners 1 +0.7
Week of 2/2100.0*Chance in playoffs100.0*Average seed
Rebels 3 Icemen 1 In
+0.4
Rebels 1 Fireliners 0 +19.5
+0.3
Showers 3 Pucks 2 +0.8
Week of 2/9100.0*Chance in playoffs100.0*Average seed
Gunners 7 Pucks 2 -0.5
Bees 4 Gunners 0 +0.2
Games Above .500
Chance Will Make Playoffs