How are these numbers calculated?

Big Games

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

Week of 3/22100.0*Chance in playoffs100.0*Average seed
Friburguense 1 Duque de Caxias 2 +1.4
Botafogo 7 Macae 0 +1.3
+0.1
Boavista 3 Madureira 2 +0.4
Fluminense 2 Vasco da Gama 1 +0.2
+0.2
Flamengo 2 Cabofriense 0 +0.1
Americano 1 America 0 -0.1
Botafogo 1 Cardoso Moreira 0 In
+0.1
Vasco da Gama 2 America 0 -0.1
Week of 3/29100.0*Chance in playoffs100.0*Average seed
Vasco da Gama 1 Volta Redonda 2 +0.1
Botafogo 3 Fluminense 1 +0.1
Week of 4/5None
Points
Chance Will Make Playoffs