How are these numbers calculated?

Big Games

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

Week of 11/11100.0*Serie C100.0*Average seed
Gama 3 Marilia 0 No
+0.8
CRB 3 Ituano 4 -0.1
-0.2
Portuguesa 2 Ceara 4 -0.1
Vila Nova 2 Paysandu 1 +0.0
Avai 1 Nautico 1 +0.1
Week of 11/18100.0*Serie C100.0*Average seed
Gama 1 Coritiba 1 -0.4
Avai 1 CRB 2 +0.2
Nautico 2 Ituano 0 +0.1
Marilia 1 Brasiliense 1 +0.1
Ceara 0 Atletico-MG 1 +0.1
Week of 11/25100.0*Serie C100.0*Average seed
Sao Raimundo-AM 2 Gama 0 -0.6
Ituano 4 Ceara 1 -0.3
CRB 2 Remo 1 +0.1
Paysandu 4 Marilia 1 +0.1
Coritiba 4 Avai 2 +0.1
Points
Chance Will Win Championship