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
Flamengo 1 Corinthians 0 -1.3
+1.0
Vasco da Gama 2 Cruzeiro 1 +0.5
Bahia 1 Portuguesa 0 +0.3
Santos 1 Fluminense 0 -0.3
Criciuma 1 Vitoria 1 -0.1
+0.1
Internacional 0 Coritiba 0 +0.1
+0.1
Week of 11/30100.0*Serie B100.0*Average seed
Fluminense 2 Atletico-MG 2 No
Vitoria 4 Flamengo 2 -0.5
Cruzeiro 1 Bahia 2 -0.3
Ponte Preta 0 Portuguesa 2 -0.2
Corinthians 0 Internacional 0 +0.1
Santos 2 Atletico-PR 1 -0.1
Week of 12/7100.0*Serie B100.0*Average seed
Bahia 1 Fluminense 2 +38.6
-0.8
Sao Paulo 0 Coritiba 1 +15.2
-0.5
Atletico-PR 5 Vasco da Gama 1 -7.4
+0.2
Flamengo 1 Cruzeiro 1 -0.3
Nautico 1 Corinthians 0 +0.1
Points
Chance Will Win Championship