How are these numbers calculated?

Big Games

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

Week of 10/25100.0*Average seed
Criciuma 3 Vasco da Gama 4 +0.2
Internacional 4 Flamengo 0 -0.1
Portuguesa 1 Goias 2 +0.1
Atletico-MG 3 America-RN 2 -0.1
Week of 11/1100.0*Average seed
Atletico-PR 2 Internacional 1 +0.1
Vasco da Gama 3 Bahia 1 +0.1
Parana 1 Atletico-MG 0 +0.1
Week of 11/8None
Points
Chance Will Make Playoffs