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
Juventude 1 Botafogo 0 -2.6
+0.2
Vitoria 1 Sao Paulo 4 -2.3
+0.1
Criciuma 1 Parana 2 -2.0
+0.0
Atletico-MG 0 Paysandu 0 -1.1
-0.2
Guarani 2 Figueirense 1 +0.8
Flamengo 0 Coritiba 0 +0.6
Corinthians 3 Vasco da Gama 1 -0.5
+0.1
Week of 12/11100.0*Serie B100.0*Average seed
Paysandu 4 Guarani 2 -14.8
+1.5
Palmeiras 3 Criciuma 2 -2.9
+0.2
Gremio 0 Atletico-MG 1 +2.4
-0.1
Vasco da Gama 1 Atletico-PR 0 -0.5
Botafogo 1 Corinthians 2 +0.1
Parana 0 Fluminense 1 +0.1
Cruzeiro 4 Vitoria 0 -0.1
Sao Paulo 1 Flamengo 1 +0.1
Week of 12/19100.0*Serie B100.0*Average seed
Juventude 1 Paysandu 2 +1.6
Flamengo 6 Cruzeiro 2 -0.5
Atletico-MG 3 Sao Caetano 0 +0.3
Internacional 2 Parana 1 +0.1
Santos 2 Vasco da Gama 1 +0.1
Points
Chance Will Win Championship