How are these numbers calculated?

Big Games

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

Week of 10/5100.0*Chance in playoffs100.0*Qualified100.0*Average seed
Costa Rica 1 Honduras 1 -7.0
-7.8
-0.2
United States 4 Panama 0 -2.1
-3.3
-0.1
Week of 10/9100.0*Chance in playoffs100.0*Qualified100.0*Average seed
Honduras 3 Mexico 2 +17.3
+28.0
+0.6
Trinidad and T 2 United States 1 +15.7
+11.4
+0.2
Panama 2 Costa Rica 1 -7.2
-15.5
-0.3
Points
Chance Will Make Playoffs