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
New York 2 Pittsburgh 0 -5.8
-0.8
Harrisburg 2 St Louis 0 +0.6
-0.0
Richmond 0 Orlando 1 Out
+0.0
Tampa Bay 1 Bethlehem 1 +0.1
Ottawa 1 Charleston 1 +0.1
Week of 10/7100.0*Chance in playoffs100.0*Average seed
Pittsburgh 0 Rochester 2 -0.6
Charleston 4 Harrisburg 0 +0.2
St Louis 0 Richmond 1 +0.2
Ottawa 4 Cincinnati 0 -0.1
Week of 10/14100.0*Chance in playoffs100.0*Average seed
Pittsburgh 1 Ottawa 1 -0.6
Bethlehem 1 St Louis 1 -0.4
Louisville 3 Richmond 1 +0.1
Points
Chance Will Make Playoffs