How are these numbers calculated?

Big Games

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

Week of 3/20100.0*Chance in playoffs100.0*Average seed
Vasco da Gama 2 Americano 3 -28.5
-0.7
Olaria 1 Vasco da Gama 0 -15.7
-0.4
America 3 Boavista 2 -9.8
-0.2
Americano 2 Macae 1 +5.7
+0.1
Volta Redonda 0 Botafogo 1 -4.7
-0.1
Bangu 1 America 1 +4.1
+0.1
Macae 3 Olaria 1 -1.9
-0.1
Flamengo 3 Tigres do Brasil 1 +0.8
+0.0
Botafogo 2 Flamengo 2 -0.6
-0.0
Tigres do Brasil 3 Volta Redonda 0 -0.5
Week of 3/27100.0*Chance in playoffs100.0*Average seed
Vasco da Gama 3 Fluminense 0 +33.3
+0.8
Flamengo 2 America 1 +5.3
+0.1
Macae 2 Duque de Caxias 2 +2.3
+0.1
Boavista 1 Botafogo 4 -1.1
-0.2
Bangu 2 Tigres do Brasil 1 +0.3
+0.1
Week of 4/3100.0*Chance in playoffs100.0*Average seed
Duque de Caxias 3 Vasco da Gama 4 In
+0.3
America 2 Volta Redonda 0 -23.4
-0.3
Fluminense 3 Macae 1 +4.3
+0.1
Points
Chance Will Make Playoffs

Lottery

Why are you looking down here? We just made the playoffs!

Big Games

Week of 3/20100.0*Lottery seed
Vasco da Gama 2 Americano 3 +2.5
Olaria 1 Vasco da Gama 0 +1.4
America 3 Boavista 2 +0.6
Americano 2 Macae 1 -0.3
Bangu 1 America 1 -0.2
Volta Redonda 0 Botafogo 1 +0.1
Boavista 0 Friburguense 1 -0.1
Resende 1 Duque de Caxias 0 -0.1
Macae 3 Olaria 1 +0.1
Flamengo 3 Tigres do Brasil 1 -0.1
Botafogo 2 Flamengo 2 +0.0
Week of 3/27100.0*Lottery seed
Vasco da Gama 3 Fluminense 0 -2.6
Boavista 1 Botafogo 4 +0.3
Resende 2 Olaria 0 -0.2
Flamengo 2 America 1 -0.2
Madureira 0 Americano 0 -0.2
Volta Redonda 1 Friburguense 1 -0.1
Macae 2 Duque de Caxias 2 -0.1
Bangu 2 Tigres do Brasil 1 +0.0
Week of 4/3100.0*Lottery seed
Duque de Caxias 3 Vasco da Gama 4 -0.8
America 2 Volta Redonda 0 +0.6
Fluminense 3 Macae 1 -0.2
Botafogo 2 Bangu 2 +0.1
Tigres do Brasil 1 Boavista 3 +0.1