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*Chance in playoffs100.0*Average seed
Fire-PDL 0 Michigan 2 In
+0.1
St. Louis 2 Thunder Bay 3 -0.1
Week of 7/8100.0*Chance in playoffs100.0*Average seed
Thunder Bay 3 Kansas City 1 -0.2
Long Island 0 Express 2 -0.2
Spartans 0 NJ Rangers 1 -0.2
New Orleans 1 Austin 0 -0.1
River City 2 Michigan 1 -0.1
Week of 7/15100.0*Chance in playoffs100.0*Average seed
Michigan 4 River City 0 +0.3
Points
Chance Will Make Playoffs