How are these numbers calculated?

Big Games

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

Week of 12/4100.0*Serie B100.0*Average seed
Vitoria 1 Sao Paulo 4 -3.0
+0.2
Criciuma 1 Parana 2 -2.0
+0.0
Juventude 1 Botafogo 0 -1.7
+0.2
Atletico-MG 0 Paysandu 0 -1.7
+0.1
Corinthians 3 Vasco da Gama 1 -0.7
+0.1
Guarani 2 Figueirense 1 +0.6
Flamengo 0 Coritiba 0 +0.5
-0.3
Internacional 2 Cruzeiro 0 +0.1
Week of 12/11100.0*Serie B100.0*Average seed
Cruzeiro 4 Vitoria 0 -4.2
+0.1
Gremio 0 Atletico-MG 1 +3.8
-0.1
Botafogo 1 Corinthians 2 -3.8
+0.2
Palmeiras 3 Criciuma 2 -3.7
+0.2
Paysandu 4 Guarani 2 +1.6
-0.2
Sao Paulo 1 Flamengo 1 -0.6
-0.5
Vasco da Gama 1 Atletico-PR 0 +0.2
-0.2
Week of 12/19100.0*Serie B100.0*Average seed
Atletico-MG 3 Sao Caetano 0 +8.1
-0.2
Flamengo 6 Cruzeiro 2 No
+1.5
Criciuma 3 Coritiba 3 -4.5
+0.2
Atletico-PR 1 Botafogo 1 -4.5
+0.2
Vitoria 1 Ponte Preta 2 -3.2
+0.1
Juventude 1 Paysandu 2 -0.2
Points
Chance Will Win Championship