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 +1.0
+0.8
OKC 2 Seattle 2 +0.3
+0.1
Swope Park 3 Tulsa 0 -0.2
Salt Lake City 2 San Antonio 0 -0.1
-0.1
Salt Lake City 0 Orange County 2 -0.1
RGV 0 Portland 1 -0.2
Arizona 1 Portland 2 -0.1
Week of 9/17100.0*Chance in playoffs100.0*Average seed
St Louis 1 Louisville 5 Out
-0.8
Orange County 0 RGV 1 +1.0
Arizona 3 Salt Lake City 2 +0.7
-0.2
San Antonio 2 Tulsa 0 -0.3
-0.2
Col Springs 2 Seattle 1 +0.2
+0.1
Vancouver 0 Portland 2 -0.1
Week of 9/24100.0*Chance in playoffs100.0*Average seed
OKC 2 St Louis 2 -0.5
Swope Park 2 Seattle 0 +0.1
Portland 3 Arizona 2 +0.1
Points
Chance Will Make Playoffs