How are these numbers calculated?

Big Games

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

Thursday100.0*Average seed
Iowa 1 Chicago 2 +0.3
Friday100.0*Average seed
Iowa 3 Chicago 2 (ot)+0.2
Grand Rapids 3 Charlotte 2 (ot)-0.2
Saturday100.0*Average seed
Chicago 4 Charlotte 3 (ot)+0.7
Milwaukee 1 Grand Rapids 5 -0.3
Points
Chance Will Make Playoffs