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
Toronto Lynx 1 Fire-PDL 0 +0.7
St. Louis 2 Thunder Bay 3 +0.1
Hamilton 2 Forest City 4 +0.1
Week of 7/8100.0*Average seed
Forest City 1 Toronto Lynx 2 +0.8
Winnipeg 2 Springfield 1 -0.5
Thunder Bay 3 Kansas City 1 -0.5
Hamilton 2 River City 0 -0.1
Inferno 2 Cincinnati 3 +0.1
Fire-PDL 2 Forest City 1 -0.1
Toronto Lynx 3 River City 1 +0.1
Week of 7/15100.0*Average seed
Toronto Lynx 2 Hamilton 0 +2.0
Inferno 0 Fire-PDL 1 -0.1
Points
Chance Will Make Playoffs