How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Libertadores100.0*Average seed
Sport Recife 2 Fluminense 2 -1.4
-0.1
Corinthians 1 Gremio 0 -0.4
+0.1
Internacional 2 Atletico-MG 1 -0.3
Week of 11/29100.0*Libertadores100.0*Average seed
Internacional 3 Palmeiras 1 No
Fluminense 5 Corinthians 2 +0.3
Bahia 1 Gremio 0 +0.2
Atletico-MG 1 Coritiba 2 +0.1
Week of 12/6100.0*Libertadores100.0*Average seed
Cruzeiro 2 Fluminense 1 -0.4
Gremio 1 Flamengo 1 +0.3
Botafogo 0 Atletico-MG 0 +0.0
Points
Chance Will Win Championship