How are these numbers calculated?

Big Games

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

Week of 9/5100.0*Average seed
Montreal 2 New York 0 -0.3
Toronto 3 Montreal 2 +0.1
Charlotte 4 Toronto 1 +0.1
Week of 9/12100.0*Average seed
St Louis 2 Charlotte 0 +0.4
Montreal 0 Harrisburg 5 +0.3
Week of 9/19None
Points
Chance Will Make Playoffs