How are these numbers calculated?

Big Games

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

Week of 3/8100.0*Semi-Final100.0*Average seed
Boavista 1 Volta Redonda 0 No
-1.4
Friburguense 1 Cabofriense 1 +0.0
+0.0
Botafogo 0 Flamengo 2 +0.1
Vasco da Gama 1 Bonsucesso 1 +0.0
Resende 3 Macae 2 +0.1
Nova Iguacu 3 Audax Rio 3 +0.1
Bangu 1 Madureira 1 +0.1
Week of 3/15100.0*Semi-Final100.0*Average seed
Volta Redonda 3 Nova Iguacu 1 +1.9
Friburguense 1 Resende 0 -0.2
Macae 4 Duque de Caxias 1 -0.1
Boavista 2 Botafogo 1 +0.1
Flamengo 2 Bangu 2 -0.0
Madureira 1 Bonsucesso 2 +0.0
Week of 3/22100.0*Semi-Final100.0*Average seed
Fluminense 3 Volta Redonda 1 -0.5
Friburguense 2 Bonsucesso 1 -0.5
Botafogo 1 Nova Iguacu 1 +0.5
Audax Rio 0 Macae 1 -0.3
Boavista 1 Bangu 0 +0.1
Points
Chance Will Win Championship