How are these numbers calculated?

Big Games

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

Week of 11/29100.0*Libertadores100.0*Average seed
Vitoria 1 Coritiba 0 -19.9
-0.5
Internacional 3 Flamengo 1 -11.8
-0.2
Fluminense 2 Sao Caetano 1 +3.9
+0.2
Juventude 1 Atletico-MG 0 +3.8
+0.1
Goias 3 Santos 0 -0.2
Ponte Preta 1 Sao Paulo 2 *-0.1
-0.1
Week of 12/6100.0*Libertadores100.0*Average seed
Fortaleza 2 Coritiba 2 -14.7
-0.3
Juventude 2 Sao Caetano 1 +10.8
+0.2
Internacional 1 Sao Paulo 1 +4.4
+0.1
Vitoria 0 Atletico-MG 1 -0.5
-0.1
Goias 0 Figueirense 3 +0.3
+0.1
Week of 12/13100.0*Libertadores100.0*Average seed
Coritiba 2 Criciuma 0 Yes
+0.9
Sao Caetano 5 Internacional 0 -6.4
-0.2
Atletico-MG 3 Goias 2 -6.4
-0.4

* 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