How are these numbers calculated?

Big Games

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

Week of 11/29100.0*Serie B100.0*Average seed
Fluminense 2 Sao Caetano 1 -15.1
+1.2
Corinthians 1 Bahia 2 +2.0
-0.1
Criciuma 0 Gremio 2 +2.0
-0.1
Fortaleza 5 Parana 3 +1.6
-0.2
Ponte Preta 1 Sao Paulo 2 -1.4
+0.1
Juventude 1 Atletico-MG 0 +0.9
-0.2
Cruzeiro 2 Paysandu 1 -0.3
+0.2
Vasco da Gama 1 Figueirense 0 +0.1
-0.1
Week of 12/6100.0*Serie B100.0*Average seed
Cruzeiro 5 Fluminense 2 +9.8
-1.1
Criciuma 3 Bahia 2 -2.7
+0.1
Guarani 2 Paysandu 1 -1.8
+0.2
Santos 2 Gremio 2 -1.4
+0.1
Flamengo 1 Ponte Preta 1 -0.4
+0.0
Fortaleza 2 Coritiba 2 +0.3
+0.0
Juventude 2 Sao Caetano 1 +0.1
-0.2
Atletico-PR 2 Vasco da Gama 2 -0.0
Week of 12/13100.0*Serie B100.0*Average seed
Gremio 3 Corinthians 0 +7.9
-0.4
Ponte Preta 2 Fortaleza 0 +7.8
+0.1
Fluminense 1 Juventude 0 No
+1.1
Bahia 0 Cruzeiro 7 -4.4
+0.1
Paysandu 2 Atletico-PR 2 +3.2
-0.0
Points
Chance Will Win Championship