How are these numbers calculated?

Big Games

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

Week of 11/24100.0*Serie B100.0*Average seed
Fortaleza 2 Santos 1 -0.2
Sao Paulo 1 Vasco da Gama 0 +0.1
Botafogo 1 Corinthians 0 -9.3
+0.8
CSA 0 Fluminense 1 +0.9
-0.1
Cruzeiro 0 CSA 1 -0.3
Fluminense 1 Palmeiras 0 +0.2
-0.2
Ceara 1 Sao Paulo 1 +0.2
Atletico-MG 0 Athletico-PR 1 +0.1
Week of 12/1100.0*Serie B100.0*Average seed
Vasco da Gama 1 Cruzeiro 0 No
-0.1
Avai 1 Fluminense 1 +0.1
Atletico-MG 2 Corinthians 1 -0.2
Atletico-MG 2 Botafogo 0 -0.6
CSA 1 Bahia 2 -0.1
Ceara 0 Corinthians 1 +0.1
Fluminense 0 Fortaleza 0 -0.1
Week of 12/8100.0*Serie B100.0*Average seed
Corinthians 1 Fluminense 2 -0.4
Botafogo 1 Ceara 1 +0.1
Points
Chance Will Win Championship