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 -0.1
-0.1
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 -1.0
Paysandu 0 Internacional 2 +0.5
Figueirense 2 Parana 2 +0.4
Atletico-PR 4 Juventude 0 -0.3
Portuguesa 2 Bahia 4 -0.1
Vitoria 4 Palmeiras 3 +0.0
Points
Chance Will Make Playoffs