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*Chance in playoffs100.0*Average seed
Pittsburgh 1 Charleston 1 +5.6
+0.2
New York 3 Louisville 2 -1.2
-0.2
Charlotte 2 Wilmington 2 +0.6
+0.1
Richmond 0 Rochester 0 +0.1
+0.0
Charlotte 4 Toronto 1 -0.1
-0.1
Montreal 2 New York 0 +0.3
Week of 9/12100.0*Chance in playoffs100.0*Average seed
Charleston 2 Louisville 0 +3.8
+0.6
Wilmington 1 Pittsburgh 1 +1.7
+0.1
Harrisburg 1 Richmond 1 +0.5
+0.1
St Louis 2 Charlotte 0 +0.4
+0.1
Week of 9/19100.0*Chance in playoffs100.0*Average seed
Charleston 3 Charlotte 1 +0.3
Rochester 3 New York 2 +0.1
Points
Chance Will Make Playoffs