How are these numbers calculated?

Big Games

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

Week of 9/29100.0*Average seed
Portland II 0 Reno 2 -0.8
Sacramento 1 Portland II 0 -0.8
Salt Lake II 2 OKC 1 -0.2
Reno 2 Tulsa 0 -0.1
Salt Lake II 0 Col Springs 2 +0.1
Sacramento 3 Swope Park 1 +0.1
Phoenix 2 St Louis 0 +0.0
Week of 10/5100.0*Average seed
St Louis 1 Tulsa 0 -0.2
Phoenix 0 Reno 0 -0.1
Week of 10/13100.0*Average seed
Phoenix 0 Portland II 1 +0.5
St Louis 0 OKC 0 -0.1
Points
Chance Will Make Playoffs