How are these numbers calculated?

Big Games

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

Week of 11/23100.0*Serie B100.0*Average seed
Internacional 0 Coritiba 0 -2.1
-0.1
Santos 1 Fluminense 0 -0.8
Bahia 1 Portuguesa 0 +0.8
+0.0
Vasco da Gama 2 Cruzeiro 1 +0.7
Criciuma 1 Vitoria 1 -0.2
+0.1
Flamengo 1 Corinthians 0 +0.2
-0.1
Week of 11/30100.0*Serie B100.0*Average seed
Corinthians 0 Internacional 0 -0.5
-0.5
Vasco da Gama 2 Nautico 0 +0.1
-0.1
Coritiba 2 Botafogo 1 +0.1
-0.1
Fluminense 2 Atletico-MG 2 -0.1
+0.0
Criciuma 1 Sao Paulo 0 +0.1
-0.2
Ponte Preta 0 Portuguesa 2 +0.1
-0.3
Cruzeiro 1 Bahia 2 -0.3
Vitoria 4 Flamengo 2 +0.1
Week of 12/7100.0*Serie B100.0*Average seed
Internacional 0 Ponte Preta 0 -0.6
Sao Paulo 0 Coritiba 1 -0.4
Botafogo 3 Criciuma 0 +0.3
Nautico 1 Corinthians 0 +0.2
Bahia 1 Fluminense 2 +0.1
Atletico-PR 5 Vasco da Gama 1 +0.1
Flamengo 1 Cruzeiro 1 +0.1
Portuguesa 0 Gremio 0 +0.0
Points
Chance Will Win Championship