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
Criciuma 0 Gremio 2 +0.8
Corinthians 1 Bahia 2 +0.7
Cruzeiro 2 Paysandu 1 +0.6
-0.6
Fortaleza 5 Parana 3 +0.6
-0.1
Fluminense 2 Sao Caetano 1 +0.2
-0.2
Ponte Preta 1 Sao Paulo 2 -0.2
+0.1
Juventude 1 Atletico-MG 0 +0.2
-0.3
Vasco da Gama 1 Figueirense 0 -0.2
Vitoria 1 Coritiba 0 -0.1
Week of 12/6100.0*Serie B100.0*Average seed
Guarani 2 Paysandu 1 +8.8
-1.1
Criciuma 3 Bahia 2 -2.4
+0.1
Flamengo 1 Ponte Preta 1 -1.2
+0.0
Fortaleza 2 Coritiba 2 +1.1
-0.0
Santos 2 Gremio 2 -0.5
Cruzeiro 5 Fluminense 2 -0.2
+0.1
Juventude 2 Sao Caetano 1 -0.2
Week of 12/13100.0*Serie B100.0*Average seed
Gremio 3 Corinthians 0 +10.4
-0.5
Ponte Preta 2 Fortaleza 0 +8.9
-0.1
Paysandu 2 Atletico-PR 2 No
-0.1
Bahia 0 Cruzeiro 7 -2.4
+0.1
Fluminense 1 Juventude 0 -0.3
Points
Chance Will Win Championship