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*Serie B100.0*Average seed
Nova Iguacu 3 Audax Rio 3 -0.9
Resende 3 Macae 2 +0.8
+0.0
Bangu 1 Madureira 1 -0.5
-0.4
Duque de Caxias 2 Fluminense 2 -0.2
+0.0
Vasco da Gama 1 Bonsucesso 1 +0.0
Friburguense 1 Cabofriense 1 +0.0
Botafogo 0 Flamengo 2 +0.0
Week of 3/15100.0*Serie B100.0*Average seed
Audax Rio 2 Cabofriense 0 +7.4
-0.1
Madureira 1 Bonsucesso 2 +3.5
-1.4
Macae 4 Duque de Caxias 1 -3.0
-0.1
Friburguense 1 Resende 0 -0.3
-0.1
Boavista 2 Botafogo 1 +0.1
Volta Redonda 3 Nova Iguacu 1 -0.1
Flamengo 2 Bangu 2 -0.1
Week of 3/22100.0*Serie B100.0*Average seed
Madureira 0 Resende 1 +16.1
-1.0
Audax Rio 0 Macae 1 No
+0.1
Friburguense 2 Bonsucesso 1 +0.2
Botafogo 1 Nova Iguacu 1 -0.1
Points
Chance Will Win Championship