How are these numbers calculated?

Big Games

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

Week of 2/6100.0*Libertadores100.0*Average seed
Atletico-GO 1 Santos 1 +0.1
Botafogo 2 Gremio 5 -0.0
-0.1
Week of 2/13100.0*Libertadores100.0*Average seed
Flamengo 2 Corinthians 1 Yes
Gremio 1 Sao Paulo 2 +0.0
Palmeiras 3 Fortaleza 0 -0.1
Sao Paulo 1 Palmeiras 1 +0.1
Atletico-MG 1 Bahia 1 +0.0
Week of 2/20100.0*Libertadores100.0*Average seed
Fluminense 2 Fortaleza 0 +0.4
Sao Paulo 2 Flamengo 1 -0.3
Botafogo 1 Sao Paulo 0 +0.2
Santos 1 Fluminense 1 -0.2
Sport Recife 2 Atletico-MG 3 -0.1
Bragantino 1 Gremio 0 +0.1
Palmeiras 1 Atletico-GO 1 +0.1
Gremio 1 Athletico-PR 0 -0.1
Points
Chance Will Win Championship