How are these numbers calculated?

Big Games

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

Week of 3/18100.0*Chance in playoffs100.0*Average seed
Fluminense 1 Nova Iguacu 3 +10.5
+0.9
Vasco da Gama 0 Botafogo 0 +2.8
+0.1
Volta Redonda 3 Madureira 2 +2.3
-0.0
Bangu 0 Boavista 0 +0.2
+0.1
Resende 0 Flamengo 1 -0.1
+0.1
Week of 3/22100.0*Chance in playoffs100.0*Average seed
Volta Redonda 2 Nova Iguacu 1 -13.6
-0.8
Nova Iguacu 0 Portuguesa 0 -6.4
-0.2
Botafogo 2 Fluminense 3 +3.2
+0.1
Portuguesa 2 Madureira 0 +2.1
+0.1
Boavista 1 Volta Redonda 0 +1.2
+0.1
Vasco da Gama 1 Madureira 0 -0.5
Flamengo 3 Bangu 0 +0.2
+0.0
Macae 1 Resende 2 -0.2
-0.1
Week of 3/29100.0*Chance in playoffs100.0*Average seed
Botafogo 3 Resende 2 Out
-0.2
Nova Iguacu 0 Vasco da Gama 2 Out
-0.8
Resende 0 Nova Iguacu 1 +19.6
+1.3
Portuguesa 1 Botafogo 4 -11.3
-0.3
Vasco da Gama 1 Boavista 0 -2.4
Madureira 2 Fluminense 2 +0.6
+0.1
Volta Redonda 1 Flamengo 1 +0.4
+0.0
Macae 2 Volta Redonda 2 +0.1
Points
Chance Will Make Playoffs