How are these numbers calculated?

Big Games

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

Friday100.0*Qualified100.0*Average seed
Trumbull 54 Darien 19 -5.1
-0.5
Staples 54 Bassick 32 +3.2
+0.1
New Canaan 42 Danbury 62 -1.6
+0.1
St. Joseph 65 Greenwich 40 +0.2
Saturday100.0*Qualified100.0*Average seed
Darien 39 Bassick 35 +0.6
Monday100.0*Qualified100.0*Average seed
Norwalk 41 Darien 37 -0.5
Games Above .500
Chance Will Win Championship