How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 9/30100.0*Chance in playoffs100.0*Average seed
Ottawa 1 Charleston 1 Out
-0.3
New York 2 Pittsburgh 0 -0.2
+0.1
Richmond 0 Orlando 1 -0.2
+0.0
Harrisburg 2 St Louis 0 +0.1
-0.1
Week of 10/7100.0*Chance in playoffs100.0*Average seed
Ottawa 4 Cincinnati 0 +0.8
St Louis 0 Richmond 1 +0.2
Pittsburgh 0 Rochester 2 +0.1
Charleston 4 Harrisburg 0 +0.1
Week of 10/14100.0*Chance in playoffs100.0*Average seed
Pittsburgh 1 Ottawa 1 +0.8
Bethlehem 1 St Louis 1 +0.2
Points
Chance Will Make Playoffs