How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Serie B**100.0*Average seed
Sport 2 Botafogo 0 +0.1
Bahia 1 Ponte Preta 0 +0.0
Portuguesa 2 Gremio 2 +0.0
Sao Paulo 2 Nautico 1 +0.2
Fluminense 0 Cruzeiro 2 -0.2
Flamengo 1 Palmeiras 1 +0.0
Week of 11/25100.0*Serie B**100.0*Average seed
Cruzeiro 2 Coritiba 1 +0.2
-1.0
Inter 0 Portuguesa 2 +0.2
Sport 1 Fluminense 1 No
Bahia 1 Nautico 1 +0.1
Ponte Preta 0 Sao Paulo 0 +0.0
Week of 12/1100.0*Serie B**100.0*Average seed
Coritiba 3 Figueirense 0 +1.2
Atletico-GO 0 Bahia 1 -0.4
Portuguesa 0 Ponte Preta 0 +0.4
Nautico 1 Sport 0 -0.3
Points
Chance Will Win Championship