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 -4.2
-0.1
New York 3 Louisville 2 -4.1
-0.2
Charlotte 2 Wilmington 2 +3.0
+0.1
Pittsburgh 1 Charleston 1 +1.7
+0.1
Richmond 0 Rochester 0 +1.1
+0.0
Montreal 2 New York 0 +0.2
+0.1
Week of 9/12100.0*Chance in playoffs100.0*Average seed
Montreal 0 Harrisburg 5 +24.8
+0.9
Harrisburg 1 Richmond 1 -12.7
-0.4
Richmond 2 Toronto 1 -9.1
-0.2
St Louis 2 Charlotte 0 +4.2
+0.1
Pittsburgh 1 Rochester 1 +4.1
+0.1
Wilmington 1 Pittsburgh 1 +3.8
+0.1
Charleston 2 Louisville 0 -0.8
-0.1
Week of 9/19100.0*Chance in playoffs100.0*Average seed
Harrisburg 1 Pittsburgh 2 Out
-2.0
Charleston 3 Charlotte 1 +11.5
+0.2
Rochester 3 New York 2 +0.2
Points
Chance Will Make Playoffs