How are these numbers calculated?

Big Games

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

Week of 6/20100.0*Chance in playoffs100.0*Round of 8100.0*Average seed
Brazil 0 Venezuela 0 +4.2
+4.2
+0.1
Argentina 1 Paraguay 1 +1.5
+1.5
+0.1
Uruguay 2 Japan 2 -1.3
-1.3
+0.1
Ecuador 1 Chile 2 +0.8
+0.8
-0.0
Bolivia 1 Peru 3 +0.6
+0.6
-0.1
Colombia 1 Qatar 0 +0.5
+0.5
-0.0
Week of 6/24100.0*Chance in playoffs100.0*Round of 8100.0*Average seed
Colombia 1 Paraguay 0 In
Yes
-0.2
Ecuador 1 Japan 1 In
Yes
Peru 0 Brazil 5 In
Yes
+1.1
Bolivia 1 Venezuela 3 -0.1
Chile 0 Uruguay 1 +0.0
Points
Chance Will Make Playoffs