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*Seletiva100.0*Average seed
Fluminense 1 Nova Iguacu 3 +16.9
-1.4
+0.9
Vasco da Gama 0 Botafogo 0 +3.5
+0.1
Volta Redonda 3 Madureira 2 +2.2
+0.1
-0.0
Bangu 0 Boavista 0 +0.7
-0.1
+0.1
Resende 0 Flamengo 1 +0.5
-0.2
+0.1
Portuguesa 2 Macae 1 -0.1
+0.2
Week of 3/22100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Volta Redonda 2 Nova Iguacu 1 -20.4
-0.8
Bangu 0 Botafogo 2 -7.7
No
-0.2
Nova Iguacu 0 Portuguesa 0 -5.6
-0.1
-0.2
Botafogo 2 Fluminense 3 +5.6
+0.1
Portuguesa 2 Madureira 0 +4.9
+0.1
Flamengo 2 Vasco da Gama 2 +3.0
+0.1
Boavista 1 Volta Redonda 0 +2.2
+0.1
+0.1
Resende 0 Boavista 1 -0.8
-0.0
Vasco da Gama 1 Madureira 0 -0.8
Macae 1 Resende 2 -0.7
-0.1
Flamengo 3 Bangu 0 +0.6
+0.0
Week of 3/29100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Nova Iguacu 0 Vasco da Gama 2 Out
-0.8
Resende 0 Nova Iguacu 1 +24.8
+1.3
Portuguesa 1 Botafogo 4 -13.6
-0.3
Vasco da Gama 1 Boavista 0 -2.6
Madureira 2 Fluminense 2 +2.4
+0.1
Volta Redonda 1 Flamengo 1 +1.3
+0.0
Botafogo 3 Resende 2 -0.2
Macae 2 Volta Redonda 2 +0.1
Points
Chance Will Make Playoffs