How are these numbers calculated?

Big Games

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

Week of 10/24100.0*Serie B100.0*Average seed
America-MG 2 Atletico-PR 1 +11.6
-0.2
Santos 1 Parana 2 +10.7
-0.3
Goias 2 Juventude 2 +9.5
-0.4
Ponte Preta 2 Bragantino 2 -2.4
+0.1
Bragantino 1 Juventude 0 -1.8
-0.1
Gremio 2 America-RN 1 -0.4
+0.0
Flamengo 2 Guarani 1 -0.1
Sport Recife 2 Botafogo 1 +0.0
Sao Paulo 1 Corinthians 2 +0.0
Week of 10/31100.0*Serie B100.0*Average seed
Santos 3 Goias 1 +14.7
-0.7
America-RN 0 Ponte Preta 1 +4.9
-0.2
Flamengo 2 America-MG 0 -3.7
+0.1
Palmeiras 3 Parana 2 -2.3
+0.1
Portuguesa 3 Bragantino 1 -1.3
+0.1
Guarani 1 Gremio 3 -0.5
Internacional 0 Botafogo 0 +0.4
-0.0
Week of 11/7100.0*Serie B100.0*Average seed
Goias 2 Vasco da Gama 2 Yes
-0.1
Parana 2 Flamengo 1 Yes
-0.3
America-MG 1 Palmeiras 1 -3.6
+0.0
Bragantino 0 Vitoria 0 +0.2
Points
Chance Will Make Playoffs