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
Sao Raimundo-AM 3 Santo Andre 2 +2.3
-0.1
CRB 3 Ituano 4 -2.2
-0.1
Guarani 1 America-RN 2 -1.8
+0.1
Vila Nova 2 Paysandu 1 +1.3
+0.0
Portuguesa 2 Ceara 4 -0.6
-0.1
Gama 3 Marilia 0 -0.1
Avai 1 Nautico 1 +0.0
Week of 11/18100.0*Serie C100.0*Average seed
Remo 3 Sao Raimundo-AM 0 No
+1.3
Avai 1 CRB 2 +5.8
+0.0
Paulista 9 Paysandu 0 -2.7
+0.2
Guarani 2 Sport Recife 0 +1.2
Portuguesa 2 Vila Nova 0 +0.1
+0.1
Ceara 0 Atletico-MG 1 +0.2
Nautico 2 Ituano 0 +0.1
Gama 1 Coritiba 1 +0.0
Week of 11/25100.0*Serie C100.0*Average seed
CRB 2 Remo 1 -1.0
Coritiba 4 Avai 2 +0.3
Sao Raimundo-AM 2 Gama 0 +0.1
Ituano 4 Ceara 1 -0.1
Points
Chance Will Win Championship