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 -10.4
-10.4
-0.7
Ecuador 1 Chile 2 +1.3
+1.3
Colombia 1 Qatar 0 +1.2
+1.2
Argentina 1 Paraguay 1 +0.8
+0.8
Uruguay 2 Japan 2 -0.4
-0.4
Bolivia 1 Peru 3 -0.2
Week of 6/24100.0*Chance in playoffs100.0*Round of 8100.0*Average seed
Bolivia 1 Venezuela 3 In
Yes
+2.8
Ecuador 1 Japan 1 +4.9
+4.9
+0.1
Colombia 1 Paraguay 0 +4.9
+4.9
+0.2
Qatar 0 Argentina 2 -1.6
-1.6
+0.0
Chile 0 Uruguay 1 -0.1
Points
Chance Will Make Playoffs