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
Internacional 2 Parana 1 +9.6
*No
+1.9
Guarani 0 Portuguesa 1 -1.3
-0.1
Goias 4 Juventude 1 -0.9
-0.0
Sport Recife 0 Corinthians 0 +0.7
+0.0
Santos 1 Vitoria 0 +0.7
Atletico-MG 5 Vasco da Gama 1 -0.5
+0.1
Coritiba 0 Flamengo 0 +0.4
+0.1
Vasco da Gama 1 Santos 2 +0.3
+0.1
Gremio 3 Santos 0 -0.2
+0.1
Corinthians 0 Bahia 0 +0.2
Botafogo 0 Cruzeiro 0 +0.1
+0.0
Sao Paulo 2 Gremio 1 -0.1
-0.2
Week of 11/14100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Portuguesa 1 Internacional 2 +17.4
+1.7
Cruzeiro 3 Sport Recife 1 +4.9
+0.2
Corinthians 1 Goias 1 +2.7
+0.1
Vitoria 0 Guarani 1 -1.6
+0.0
Flamengo 3 Fluminense 1 -1.4
-0.1
Bragantino 3 Sao Paulo 4 -0.8
-0.2
Juventude 3 Botafogo 5 -0.0
Week of 11/21100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Bragantino 1 Internacional 0 -35.5
-1.0
Portuguesa 4 Botafogo 1 -13.7
-0.4
Gremio 1 Goias 3 -12.4
-0.2
Palmeiras 4 Sport Recife 1 +9.8
+0.3
Parana 1 Sao Paulo 1 +8.4
+0.2
Sao Paulo 1 Cruzeiro 0 -5.2
-0.1
Atletico-MG 3 Atletico-PR 2 -0.1

* 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