How are these numbers calculated?

Big Games

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

Week of 7/1100.0*Average seed
St. Louis 2 Thunder Bay 3 +0.1
Fire-PDL 0 Michigan 2 -0.1
Week of 7/8100.0*Average seed
Thunder Bay 3 Kansas City 1 +0.5
Thunder Bay 5 Kansas City 1 +0.1
River City 2 Michigan 1 +0.1
Week of 7/15100.0*Average seed
Michigan 4 River City 0 -0.6
Points
Chance Will Make Playoffs