How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Average seed
Botafogo 2 Cruzeiro 1 +1.1
Sao Paulo 4 Figueirense 2 -0.2
Brasiliense 1 Santos 0 +0.2
Fortaleza 5 Fluminense 1 -0.1
Juventude 2 Goias 1 -0.1
Vasco da Gama 4 Paysandu 0 -0.1
Ponte Preta 2 Palmeiras 6 +0.0
Week of 11/27100.0*Average seed
Santos 2 Botafogo 1 -1.1
Parana 2 Cruzeiro 0 -0.1
Atletico-PR 3 Paysandu 2 -0.1
Fluminense 1 Juventude 2 -0.1
Fortaleza 1 Sao Paulo 0 +0.0
Atletico-MG 0 Vasco da Gama 0 +0.0
Week of 12/4100.0*Average seed
Botafogo 2 Fortaleza 0 +1.0
Sao Paulo 3 Atletico-PR 1 -0.4
Juventude 1 Atletico-MG 3 +0.3
Figueirense 3 Santos 1 +0.3
Points
Chance Will Win Championship