How are these numbers calculated?

Big Games

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

Week of 3/8100.0*Semi-Final100.0*Serie B100.0*Average seed
Boavista 1 Volta Redonda 0 +0.6
+1.4
Friburguense 1 Cabofriense 1 +0.0
Nova Iguacu 3 Audax Rio 3 +0.1
Vasco da Gama 1 Bonsucesso 1 *No
+0.0
Resende 3 Macae 2 +0.1
Botafogo 0 Flamengo 2 +0.1
Bangu 1 Madureira 1 +0.1
Week of 3/15100.0*Semi-Final100.0*Serie B100.0*Average seed
Audax Rio 2 Cabofriense 0 +11.8
+0.1
Boavista 2 Botafogo 1 +2.2
+0.9
Fluminense 1 Vasco da Gama 1 -0.2
Friburguense 1 Resende 0 -0.1
Flamengo 2 Bangu 2 +0.0
Volta Redonda 3 Nova Iguacu 1 +0.0
Week of 3/22100.0*Semi-Final100.0*Serie B100.0*Average seed
Boavista 1 Bangu 0 +18.1
+0.3
Flamengo 5 Cabofriense 3 +11.1
+0.1
Fluminense 3 Volta Redonda 1 +0.1

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

Points
Chance Will Win Championship