How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Thursday100.0*Serie B100.0*Average seed
Guarani 2 Botafogo 0 No
+1.3
Parana 1 Gremio 1 -0.1
+0.1
Fluminense 2 Portuguesa 0 -0.1
+0.1
Sunday100.0*Serie B100.0*Average seed
Flamengo 2 Guarani 2 +0.6
Atletico-PR 4 Juventude 0 -0.5
Figueirense 2 Parana 2 +0.4
Paysandu 0 Internacional 2 +0.3
Ponte Preta 2 Fluminense 3 +0.2
Corinthians 1 Vasco da Gama 1 -0.1
Vitoria 4 Palmeiras 3 -0.1
Points
Chance Will Make Playoffs