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
Hamilton 2 Forest City 4 -1.3
-1.1
Hamilton 1 Fire-PDL 4 -0.2
-0.9
River City 1 Inferno 2 +0.1
Fire-PDL 0 Michigan 2 +0.1
St. Louis 2 Thunder Bay 3 +0.1
Toronto Lynx 1 Fire-PDL 0 -0.1
Week of 7/8100.0*Chance in playoffs100.0*Average seed
Hamilton 2 River City 0 +0.8
Inferno 2 Cincinnati 3 +0.2
Fire-PDL 2 Forest City 1 -0.1
Forest City 1 Toronto Lynx 2 -0.1
Hamilton 0 Michigan 5 -0.0
Week of 7/15100.0*Chance in playoffs100.0*Average seed
Toronto Lynx 2 Hamilton 0 -0.6
Inferno 0 Fire-PDL 1 +0.4
Points
Chance Will Make Playoffs