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
Fluminense 2 Portuguesa 0 -1.3
+0.2
Guarani 2 Botafogo 0 -1.0
Parana 1 Gremio 1 -0.7
+0.1
Sunday100.0*Serie B100.0*Average seed
Flamengo 2 Guarani 2 -0.7
Figueirense 2 Parana 2 +0.4
Paysandu 0 Internacional 2 +0.3
Atletico-PR 4 Juventude 0 -0.2
Portuguesa 2 Bahia 4 -0.2
Vitoria 4 Palmeiras 3 +0.1
Points
Chance Will Make Playoffs