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
Richmond 0 Orlando 1 -8.5
-0.2
Tampa Bay 3 New York 2 +4.7
+0.1
New York 2 Pittsburgh 0 -3.2
-0.1
Harrisburg 2 St Louis 0 +1.4
+0.0
Tampa Bay 1 Bethlehem 1 +0.9
-0.0
Rochester 0 Louisville 0 -0.1
+0.0
Ottawa 1 Charleston 1 +0.1
Week of 10/7100.0*Chance in playoffs100.0*Average seed
Orlando 0 Tampa Bay 2 In
+0.2
Rochester 1 Bethlehem 0 -4.3
-0.5
Orlando 5 New York 6 -3.0
-0.1
Ottawa 4 Cincinnati 0 +2.7
+0.2
Pittsburgh 0 Rochester 2 -0.1
Charleston 4 Harrisburg 0 -0.0
Week of 10/14100.0*Chance in playoffs100.0*Average seed
Bethlehem 1 St Louis 1 -1.0
Toronto 3 Cincinnati 4 -0.2
Rochester 2 New York 1 +0.1
Points
Chance Will Make Playoffs