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
Chile 2 Ecuador 1 +4.5
+15.8
+0.9
Argentina 0 Peru 0 +2.6
-0.2
-0.1
Colombia 1 Paraguay 2 -0.7
-9.4
-0.3
Week of 10/10100.0*Chance in playoffs100.0*Qualified100.0*Average seed
Brazil 3 Chile 0 Out
-13.9
-0.4
Ecuador 1 Argentina 3 -5.2
-4.4
-0.1
Paraguay 0 Venezuela 1 +3.3
+19.1
+0.6
Peru 1 Colombia 1 -0.1
+2.9
+0.3
Points
Chance Will Make Playoffs