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
Vasco da Gama 1 Bonsucesso 1 -3.6
+0.1
Resende 3 Macae 2 +2.7
-0.1
Duque de Caxias 2 Fluminense 2 +0.8
-0.0
Nova Iguacu 3 Audax Rio 3 -0.2
+0.0
Friburguense 1 Cabofriense 1 +0.1
-0.1
Bangu 1 Madureira 1 -0.1
+0.1
Week of 3/15100.0*Serie B100.0*Average seed
Madureira 1 Bonsucesso 2 -8.8
+1.5
Friburguense 1 Resende 0 -1.9
+0.1
Macae 4 Duque de Caxias 1 -0.2
Volta Redonda 3 Nova Iguacu 1 -0.1
Boavista 2 Botafogo 1 +0.0
Flamengo 2 Bangu 2 +0.0
Week of 3/22100.0*Serie B100.0*Average seed
Friburguense 2 Bonsucesso 1 -1.4
Audax Rio 0 Macae 1 -0.2
Boavista 1 Bangu 0 +0.2
Madureira 0 Resende 1 +0.1
Botafogo 1 Nova Iguacu 1 +0.1
Points
Chance Will Win Championship