How are these numbers calculated?

Big Games

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

Week of 7/13100.0*Chance in playoffs100.0*Round of 8100.0*Average seed
Costa Rica 1 Canada 1 +3.2
+3.2
+0.5
Panama 2 Nicaragua 1 -0.4
-0.4
-0.0
United States 3 Martinique 2 -0.4
-0.4
El Salvador 2 Curaçao 0 -0.4
-0.4
Honduras 0 French Guyana 0 +0.2
+0.2
+0.1
Mexico 0 Jamaica 0 -0.1
-0.1
+0.1
Week of 7/16100.0*Chance in playoffs100.0*Round of 8100.0*Average seed
Jamaica 1 El Salvador 1 -2.9
-2.9
+0.1
Canada 0 Honduras 0 In
Yes
-0.4
Panama 3 Martinique 0 +1.4
+1.4
-0.0
Costa Rica 3 French Guyana 0 +0.6
+0.6
-0.4
Nicaragua 0 United States 3 -0.1
-0.1
-0.1
Curaçao 0 Mexico 2 -0.1
Points
Chance Will Make Playoffs