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
Santos 1 Fluminense 0 +10.9
-0.7
Vasco da Gama 2 Cruzeiro 1 +5.8
-0.2
Bahia 1 Portuguesa 0 +1.6
Flamengo 1 Corinthians 0 +0.2
-0.1
Ponte Preta 1 Gremio 1 -0.1
Internacional 0 Coritiba 0 +0.0
Criciuma 1 Vitoria 1 +0.1
Week of 11/30100.0*Serie B100.0*Average seed
Fluminense 2 Atletico-MG 2 +17.2
-0.6
Coritiba 2 Botafogo 1 +15.6
-0.4
Vasco da Gama 2 Nautico 0 +9.9
-0.2
Criciuma 1 Sao Paulo 0 +2.2
-0.1
Ponte Preta 0 Portuguesa 2 +0.9
-0.1
Cruzeiro 1 Bahia 2 +0.8
-0.2
Week of 12/7100.0*Serie B100.0*Average seed
Bahia 1 Fluminense 2 -79.1
+2.0
Sao Paulo 0 Coritiba 1 +2.3
-0.2
Atletico-PR 5 Vasco da Gama 1 -0.5
+0.1
Points
Chance Will Win Championship