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
Charlotte 4 Toronto 1 +14.5
+0.5
Charlotte 2 Wilmington 2 -11.1
-0.6
New York 3 Louisville 2 -1.9
-0.2
Pittsburgh 1 Charleston 1 +1.8
+0.1
Richmond 0 Rochester 0 +0.1
+0.0
Montreal 2 New York 0 +0.1
+0.1
Week of 9/12100.0*Chance in playoffs100.0*Average seed
St Louis 2 Charlotte 0 -15.9
-0.8
Richmond 2 Toronto 1 -14.5
-0.3
Montreal 0 Harrisburg 5 -13.3
-0.2
Wilmington 1 Pittsburgh 1 +4.1
+0.1
Pittsburgh 1 Rochester 1 -1.2
Harrisburg 1 Richmond 1 +0.5
+0.1
Charleston 2 Louisville 0 -0.4
-0.1
Week of 9/19100.0*Chance in playoffs100.0*Average seed
Charleston 3 Charlotte 1 Out
-1.1
Harrisburg 1 Pittsburgh 2 +11.6
+0.3
Rochester 3 New York 2 +0.0
Points
Chance Will Make Playoffs