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
Bahia 1 Portuguesa 0 -17.5
+1.1
Vasco da Gama 2 Cruzeiro 1 +4.6
-0.1
Santos 1 Fluminense 0 -1.3
+0.1
Internacional 0 Coritiba 0 +0.7
+0.0
Criciuma 1 Vitoria 1 -0.4
+0.1
Flamengo 1 Corinthians 0 +0.2
-0.1
Ponte Preta 1 Gremio 1 -0.1
Week of 11/30100.0*Serie B100.0*Average seed
Cruzeiro 1 Bahia 2 No
+2.0
Coritiba 2 Botafogo 1 +3.4
-0.2
Criciuma 1 Sao Paulo 0 +2.6
-0.2
Ponte Preta 0 Portuguesa 2 +1.0
-0.3
Vasco da Gama 2 Nautico 0 +0.9
-0.0
Fluminense 2 Atletico-MG 2 -0.5
+0.1
Corinthians 0 Internacional 0 +0.0
Vitoria 4 Flamengo 2 +0.1
Week of 12/7100.0*Serie B100.0*Average seed
Bahia 1 Fluminense 2 -1.6
Sao Paulo 0 Coritiba 1 +0.3
Nautico 1 Corinthians 0 +0.3
Internacional 0 Ponte Preta 0 +0.3
Botafogo 3 Criciuma 0 +0.1
Portuguesa 0 Gremio 0 +0.0
Points
Chance Will Win Championship