How are these numbers calculated?

Big Games

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

Week of 9/13100.0*Chance in playoffs100.0*Average seed
Battery 1 RailHawks 2 -0.1
+0.3
Thunder 4 Battery 0 -0.1
+0.1
Sounders 1 Silverbacks 1 In
-0.5
RailHawks 1 Rhinos 1 +0.1
Islanders 1 Silverbacks 1 +0.0
Whitecaps 1 Impact 0 +0.1
Miami FC 1 Rhinos 0 +0.2
Week of 9/20100.0*Chance in playoffs100.0*Average seed
Sounders 2 Whitecaps 3 -1.3
Thunder 3 Impact 1 +0.1
Impact 0 Islanders 0 +0.0
Points
Chance Will Make Playoffs