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
Forest City 4 River City 0 +25.7
+0.5
Hamilton 2 Forest City 4 +11.1
+1.1
River City 1 Inferno 2 +8.1
+0.1
Toronto Lynx 1 Fire-PDL 0 +1.0
+0.1
Hamilton 1 Fire-PDL 4 -0.5
-0.1
Fire-PDL 0 Michigan 2 +0.3
+0.1
Michigan 5 Cincinnati 1 +0.2
St. Louis 2 Thunder Bay 3 +0.0
Week of 7/8100.0*Chance in playoffs100.0*Average seed
Inferno 1 Forest City 2 +22.5
+0.3
Fire-PDL 2 Forest City 1 -16.7
-0.6
Toronto Lynx 3 River City 1 +15.8
+0.2
Hamilton 2 River City 0 +14.2
+0.2
Forest City 1 Toronto Lynx 2 -9.7
-0.6
River City 2 Michigan 1 -9.7
-0.2
El Paso 1 Laredo 4 *-0.2
Week of 7/15100.0*Chance in playoffs100.0*Average seed
Michigan 4 River City 0 In
+0.6
St. Louis 1 Des Moines 4 -0.2

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

Points  (Full Screen)
Chance Will Make Playoffs  (Full Screen)