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
CRB 3 Ituano 4 -3.0
+1.2
Portuguesa 2 Ceara 4 -0.7
-0.1
Guarani 1 America-RN 2 -0.7
+0.0
Sao Raimundo-AM 3 Santo Andre 2 +0.5
Vila Nova 2 Paysandu 1 +0.4
+0.0
Gama 3 Marilia 0 -0.2
Avai 1 Nautico 1 +0.0
Week of 11/18100.0*Serie C100.0*Average seed
Nautico 2 Ituano 0 -0.9
Avai 1 CRB 2 +0.2
Ceara 0 Atletico-MG 1 +0.1
Remo 3 Sao Raimundo-AM 0 -0.1
Marilia 1 Brasiliense 1 -0.0
Gama 1 Coritiba 1 +0.0
Portuguesa 2 Vila Nova 0 +0.0
Week of 11/25100.0*Serie C100.0*Average seed
Ituano 4 Ceara 1 +1.4
Coritiba 4 Avai 2 +0.3
CRB 2 Remo 1 +0.3
Sao Raimundo-AM 2 Gama 0 +0.1
Points
Chance Will Win Championship