How are these numbers calculated?

Big Games

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

Week of 3/21100.0*Serie B100.0*Average seed
Barra Mansa 1 Botafogo 1 -5.5
+0.2
Bonsucesso 4 Boavista 0 +5.4
-0.0
Resende 2 Friburguense 0 +3.9
-0.2
Nova Iguacu 1 Friburguense 0 +3.5
-0.0
Madureira 1 Bonsucesso 1 +1.7
-0.1
Boavista 1 Vasco da Gama 2 -1.3
+0.0
Volta Redonda 1 Tigres do Brasil 1 +1.0
-0.0
Fluminense 1 Tigres do Brasil 1 +0.6
-0.1
Fluminense 3 Cabofriense 0 -0.4
+0.0
Resende 2 Macae 2 +0.4
-0.0
Cabofriense 0 Botafogo 1 -0.1
+0.0
Week of 3/28100.0*Serie B100.0*Average seed
Fluminense 4 Barra Mansa 2 +7.2
-0.4
Resende 4 Boavista 2 -3.6
Cabofriense 0 Nova Iguacu 0 -0.9
+0.1
Bonsucesso 0 Flamengo 2 -0.9
+0.1
Bangu 1 Tigres do Brasil 0 -0.7
+0.1
Friburguense 1 Volta Redonda 1 +0.4
+0.0
Week of 4/5100.0*Serie B100.0*Average seed
Tigres do Brasil 1 Barra Mansa 1 +8.3
-0.8
Boavista 1 Friburguense 1 -7.2
+0.1
Nova Iguacu 0 Flamengo 0 +2.6
-0.1
Friburguense 5 Vasco da Gama 4 -0.1
-0.1
Cabofriense 2 Bonsucesso 1 -0.1
Points
Chance Will Win Championship