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
Flamengo 3 Tigres do Brasil 1 +8.7
+0.3
Botafogo 2 Flamengo 2 -5.7
-0.2
Duque de Caxias 0 Madureira 1 +3.7
+0.1
Macae 3 Olaria 1 +3.0
+0.1
America 3 Boavista 2 +2.7
+0.1
Boavista 0 Friburguense 1 +2.2
Resende 1 Duque de Caxias 0 +2.1
Fluminense 2 Resende 1 -1.3
-0.1
Madureira 1 Fluminense 3 -1.1
-0.1
Bangu 1 America 1 +0.8
Olaria 1 Vasco da Gama 0 -0.6
Tigres do Brasil 3 Volta Redonda 0 +0.4
Friburguense 2 Bangu 3 -0.2
Week of 3/27100.0*Chance in playoffs100.0*Average seed
Flamengo 2 America 1 In
+0.2
Bangu 2 Tigres do Brasil 1 -0.2
Vasco da Gama 3 Fluminense 0 +0.3
Week of 4/3100.0*Chance in playoffs100.0*Average seed
Friburguense 0 Flamengo 3 +0.0
Points
Chance Will Make Playoffs