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*Serie B100.0*Average seed
Sport Recife 1 Botafogo-SP 2 +3.5
-0.6
America-MG 1 Bahia 2 -0.9
+0.1
Coritiba 1 Santa Cruz 0 -0.8
+0.1
Flamengo 1 Internacional 2 -0.7
+0.1
Sao Paulo 3 Flamengo 1 -0.6
+0.1
Gama 4 Atletico-PR 1 +0.3
Portuguesa 1 Cruzeiro 3 +0.3
Ponte Preta 1 Juventude 0 -0.3
Santa Cruz 2 America-MG 1 -0.3
-0.1
Bahia 2 Gama 1 -0.2
Botafogo 2 Corinthians 4 -0.1
Juventude 1 Botafogo 3 +0.1
Botafogo-SP 2 Vitoria 0 -0.1
Week of 11/24100.0*Serie B100.0*Average seed
Botafogo-SP 0 Parana 2 -0.2
Ponte Preta 2 Sport Recife 1 Yes
-0.2
Goias 3 America-MG 0 -0.1
Sao Caetano 2 Flamengo 0 -0.1
+0.1
Santa Cruz 1 Vitoria 1 -0.1
Week of 12/1None
Points
Chance Will Make Playoffs