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 -5.5
-0.1
New York 3 Louisville 2 -5.0
-0.2
Charlotte 2 Wilmington 2 +3.1
+0.1
Richmond 0 Rochester 0 -2.4
-0.1
Pittsburgh 1 Charleston 1 +0.9
+0.0
Montreal 2 New York 0 +0.1
Week of 9/12100.0*Chance in playoffs100.0*Average seed
Richmond 2 Toronto 1 +36.3
+0.7
St Louis 2 Charlotte 0 +9.4
+0.2
Montreal 0 Harrisburg 5 -5.9
-0.3
Harrisburg 1 Richmond 1 +4.4
-0.1
Pittsburgh 1 Rochester 1 -2.7
-0.1
Wilmington 1 Pittsburgh 1 +2.2
+0.1
Charleston 2 Louisville 0 -0.9
-0.1
Week of 9/19100.0*Chance in playoffs100.0*Average seed
Charleston 3 Charlotte 1 In
+0.3
Harrisburg 1 Pittsburgh 2 -6.0
-0.2
Points
Chance Will Make Playoffs