How are these numbers calculated?

Big Games

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

Week of 11/26100.0*Libertadores100.0*Average seed
Botafogo 1 Ponte Preta 1 +1.1
+0.1
Corinthians 0 Atletico-PR 0 +1.1
-0.0
Coritiba 0 Vitoria 1 +0.1
Week of 12/4100.0*Libertadores100.0*Average seed
Ponte Preta 2 Coritiba 0 -0.4
Sao Paulo 5 Santa Cruz 0 -0.2
Fluminense 1 Internacional 1 +0.2
Gremio 0 Botafogo 1 +0.1
Chapecoense 0 Atletico-MG 0 +0.1
Points
Chance Will Win Championship