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*Average seed
Sao Paulo 2 Gremio 1 +2.9
+1.8
Guarani 0 Portuguesa 1 -1.0
-0.1
Sport Recife 0 Corinthians 0 +0.8
Corinthians 0 Bahia 0 +0.7
+0.1
Santos 1 Vitoria 0 +0.7
+0.1
Goias 4 Juventude 1 -0.4
-0.0
Atletico-MG 5 Vasco da Gama 1 -0.4
+0.1
Internacional 2 Parana 1 -0.4
-0.1
Gremio 3 Santos 0 -0.1
+0.1
Coritiba 0 Flamengo 0 +0.1
+0.1
Vasco da Gama 1 Santos 2 +0.1
+0.1
Botafogo 0 Cruzeiro 0 +0.0
Week of 11/14100.0*Chance in playoffs100.0*Average seed
Bragantino 3 Sao Paulo 4 +4.9
+1.2
Cruzeiro 3 Sport Recife 1 +1.3
+0.1
Corinthians 1 Goias 1 +0.8
Flamengo 3 Fluminense 1 -0.2
-0.1
Portuguesa 1 Internacional 2 -0.2
Vitoria 0 Guarani 1 +0.1
Week of 11/21100.0*Chance in playoffs100.0*Average seed
Parana 1 Sao Paulo 1 Out
-0.6
Sao Paulo 1 Cruzeiro 0 +20.5
+1.7
Gremio 1 Goias 3 -15.4
-0.4
Bragantino 1 Internacional 0 +10.6
+0.2
Palmeiras 4 Sport Recife 1 +7.1
+0.1
Atletico-MG 3 Atletico-PR 2 -0.4
Portuguesa 4 Botafogo 1 -0.2
Points
Chance Will Make Playoffs