How are these numbers calculated?

Big Games

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

Week of 10/2100.0*Chance in playoffs100.0*Qualified100.0*Average seed
Argentina 0 Peru 0 -12.4
-10.2
-0.3
Colombia 1 Paraguay 2 -0.5
-3.6
-0.2
Chile 2 Ecuador 1 -0.4
-2.2
Venezuela 0 Uruguay 0 -0.1
-0.1
Bolivia 0 Brazil 0 +0.0
Week of 10/10100.0*Chance in playoffs100.0*Qualified100.0*Average seed
Ecuador 1 Argentina 3 Out
-5.4
+0.1
Peru 1 Colombia 1 Out
No
-0.7
Brazil 3 Chile 0 +3.5
+6.3
+0.2
Paraguay 0 Venezuela 1 +2.7
+4.9
+0.1
Points
Chance Will Make Playoffs