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
Internacional 3 Flamengo 1 +20.1
+0.6
Fluminense 2 Sao Caetano 1 +8.5
+0.2
Vitoria 1 Coritiba 0 +8.0
+0.2
Juventude 1 Atletico-MG 0 +2.3
+0.2
Ponte Preta 1 Sao Paulo 2 -0.2
-0.1
Goias 3 Santos 0 -0.1
Week of 12/6100.0*Libertadores100.0*Average seed
Juventude 2 Sao Caetano 1 +8.9
+0.2
Fortaleza 2 Coritiba 2 +7.1
+0.2
Internacional 1 Sao Paulo 1 -2.2
-0.1
Vitoria 0 Atletico-MG 1 -0.7
Goias 0 Figueirense 3 +0.5
Week of 12/13100.0*Libertadores100.0*Average seed
Sao Caetano 5 Internacional 0 -26.5
-0.8
Coritiba 2 Criciuma 0 -20.8
-0.4
Points
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