How are these numbers calculated?

Big Games

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

Week of 11/7100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Vasco da Gama 1 Santos 2 -6.2
-1.5
Atletico-MG 5 Vasco da Gama 1 -1.4
-1.0
Sport Recife 0 Corinthians 0 +0.2
Santos 1 Vitoria 0 +0.2
Guarani 0 Portuguesa 1 -0.2
Goias 4 Juventude 1 -0.1
+0.0
Internacional 2 Parana 1 -0.1
-0.0
Coritiba 0 Flamengo 0 +0.1
*No
+0.1
Sao Paulo 2 Gremio 1 -0.1
-0.2
Gremio 3 Santos 0 +0.1
Botafogo 0 Cruzeiro 0 +0.0
Week of 11/14100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Vasco da Gama 4 Criciuma 2 *No
+1.0
Bragantino 3 Sao Paulo 4 -0.1
Portuguesa 1 Internacional 2 -0.1
Flamengo 3 Fluminense 1 *No
-0.1
Vitoria 0 Guarani 1 +0.1
Parana 2 Bahia 1 *No
-0.1
Santos 3 Atletico-PR 2 -0.2
Gremio 0 Coritiba 2 -0.2
Juventude 3 Botafogo 5 -0.0
Week of 11/21100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Vasco da Gama 0 Guarani 2 -1.3
Cruzeiro 2 Santos 1 +0.3
Juventude 1 Atletico-MG 0 -0.2
Portuguesa 4 Botafogo 1 +0.2
Flamengo 0 Bahia 1 +0.2
Vitoria 1 Fluminense 3 +0.1
Parana 1 Sao Paulo 1 -0.0
Corinthians 1 Coritiba 1 -0.0

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

Points
Chance Will Make Playoffs