How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Thursday, 5/18100.0*Chance in playoffs100.0*Average seed
Pirates 1 Coconut Pete 4 +24.1
+1.3
Friday, 5/19100.0*Chance in playoffs100.0*Average seed
Icebears 4 Coconut Pete 2 -18.6
-1.6
Icebears 4 Pirates 4 +4.0
+0.1
Saturday, 5/20100.0*Chance in playoffs100.0*Average seed
Lavage CL 6 Coconut Pete 10 In
+1.1
Lavage CL 3 Icebears 7 -0.2
Dragons 4 Top Shelf Mofos 8 -0.1
Whalers 6 Top Shelf Mofos 2 +0.1
Dragons 2 Whalers 13 -0.0
Physio C 2 Whalers 9 +0.0
Points
Chance Will Make Playoffs