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 -6.1
-0.2
New York 3 Louisville 2 -2.4
-0.1
Richmond 0 Rochester 0 +1.4
+0.0
Charlotte 2 Wilmington 2 +0.9
+0.0
Pittsburgh 1 Charleston 1 +0.8
+0.0
Montreal 2 New York 0 +0.1
Week of 9/12100.0*Chance in playoffs100.0*Average seed
Montreal 0 Harrisburg 5 +20.6
+0.7
Richmond 2 Toronto 1 -10.7
-0.3
Pittsburgh 1 Rochester 1 +6.4
+0.1
Harrisburg 1 Richmond 1 -6.2
-0.2
St Louis 2 Charlotte 0 +2.8
+0.1
Wilmington 1 Pittsburgh 1 +2.4
+0.1
Charleston 2 Louisville 0 -1.1
-0.1
Week of 9/19100.0*Chance in playoffs100.0*Average seed
Harrisburg 1 Pittsburgh 2 Out
-1.5
Charleston 3 Charlotte 1 +14.6
+0.3
Rochester 3 New York 2 +0.2
Points
Chance Will Make Playoffs