How are these numbers calculated?

Big Games

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

Week of 11/15100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Botafogo 2 Corinthians 4 -3.7
+1.8
Ponte Preta 1 Juventude 0 -0.4
+0.1
Sao Paulo 3 Flamengo 1 -1.1
+0.1
Bahia 2 Gama 1 -0.3
+0.1
Goias 2 Coritiba 1 +0.0
Corinthians 2 Atletico-MG 2 *Out
-0.2
Botafogo-SP 2 Vitoria 0 +0.8
Portuguesa 1 Cruzeiro 3 +0.6
-0.2
Santa Cruz 2 America-MG 1 -0.2
+0.1
Sao Caetano 2 Guarani 0 +0.1
Gama 4 Atletico-PR 1 -0.2
Coritiba 1 Santa Cruz 0 -0.1
America-MG 1 Bahia 2 +0.0
Guarani 1 Parana 0 -0.1
Juventude 1 Botafogo 3 -0.0
Cruzeiro 1 Sao Paulo 4 +0.1
Vasco da Gama 2 Gremio 0 -0.2
Vitoria 1 Goias 0 -0.2
Palmeiras 1 Vasco da Gama 3 -0.1
Parana 0 Fluminense 1 +0.1
Week of 11/24100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Internacional 0 Corinthians 2 +1.9
Botafogo-SP 0 Parana 2 -0.2
Juventude 2 Gama 1 +0.1
Palmeiras 2 Cruzeiro 1 +0.1
Portuguesa 2 Botafogo 1 +0.1
Bahia 1 Coritiba 1 -0.0
Atletico-PR 2 Guarani 2 +0.0
Week of 12/1100.0*Chance in playoffs100.0*Serie B100.0*Average seed
Corinthians 1 Fluminense 2 -1.1
Parana 3 Goias 1 -0.4
Guarani 1 Santa Cruz 2 +0.3
Coritiba 1 Ponte Preta 2 +0.2
Vitoria 2 Atletico-PR 4 +0.1
Santos 2 Vasco da Gama 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