How are these numbers calculated?

Big Games

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

Week of 9/9100.0*Chance in playoffs100.0*Average seed
San Antonio 1 St Louis 3 +0.2
OKC 2 Seattle 2 +0.1
-0.5
Salt Lake City 0 Orange County 2 -0.1
Salt Lake City 2 San Antonio 0 +0.1
Swope Park 3 Tulsa 0 -0.0
-0.0
Los Angeles 1 RGV 0 -0.1
Los Angeles 1 Sacramento 1 +0.1
RGV 0 Portland 1 +0.1
Vancouver 0 Col Springs 2 -0.1
Week of 9/17100.0*Chance in playoffs100.0*Average seed
Orange County 0 RGV 1 In
-0.2
Arizona 3 Salt Lake City 2 In
OKC 0 Swope Park 3 -1.1
Vancouver 2 OKC 1 -0.8
Vancouver 0 Portland 2 +0.2
Tulsa 1 Swope Park 3 -0.2
Col Springs 2 Seattle 1 -0.1
Sacramento 1 Los Angeles 1 +0.1
Week of 9/24100.0*Chance in playoffs100.0*Average seed
OKC 2 St Louis 2 -0.2
Los Angeles 3 Salt Lake City 1 -0.2
Points
Chance Will Make Playoffs