How are these numbers calculated?

Big Games

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

Week of 3/31100.0*Average seed
Palmeiras 0 Mirassol 1 -0.7
Portuguesa 0 Santos 2 -0.2
Catanduvense 1 Guarani 2 -0.1
Oeste 0 Corinthians 3 -0.1
Ituano 2 Sao Paulo 4 -0.1
Mogi Mirim 3 Paulista 1 -0.1
Week of 4/7100.0*Average seed
Guarani 3 Palmeiras 1 -0.7
Sao Caetano 2 Santos 1 +0.2
Sao Paulo 2 Mogi Mirim 0 +0.1
Corinthians 1 Paulista 0 -0.0
Week of 4/15100.0*Average seed
Palmeiras 2 Comercial RP 2 -0.8
Botafogo-SP 2 Guarani 1 +0.4
Santos 5 Catanduvense 0 -0.2
Mogi Mirim 2 XV Piracicaba 2 +0.2
Points
Chance Will Make Playoffs