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
Fluminense 3 Cabofriense 0 +2.3
-0.4
Nova Iguacu 1 Friburguense 0 +1.8
+0.1
Cabofriense 0 Botafogo 1 +0.7
-0.3
Bonsucesso 4 Boavista 0 +0.6
+0.1
Resende 2 Friburguense 0 +0.5
+0.0
Boavista 1 Vasco da Gama 2 -0.4
+0.0
Volta Redonda 1 Tigres do Brasil 1 +0.3
-0.0
Barra Mansa 1 Botafogo 1 +0.3
-0.0
Madureira 1 Bonsucesso 1 +0.2
-0.0
Resende 2 Macae 2 +0.2
Fluminense 1 Tigres do Brasil 1 +0.1
-0.0
Week of 3/28100.0*Serie B100.0*Average seed
Resende 4 Boavista 2 -1.3
-0.1
Cabofriense 0 Nova Iguacu 0 -0.8
-0.4
Fluminense 4 Barra Mansa 2 -0.7
+0.1
Bangu 1 Tigres do Brasil 0 -0.6
+0.1
Bonsucesso 0 Flamengo 2 -0.5
+0.1
Friburguense 1 Volta Redonda 1 +0.4
+0.0
Week of 4/5100.0*Serie B100.0*Average seed
Cabofriense 2 Bonsucesso 1 No
+1.4
Boavista 1 Friburguense 1 -4.8
+0.2
Tigres do Brasil 1 Barra Mansa 1 -4.7
+0.3
Nova Iguacu 0 Flamengo 0 -1.3
+0.0
Friburguense 5 Vasco da Gama 4 +0.1
-0.2
Points
Chance Will Win Championship