How are these numbers calculated?

Big Games

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

Week of 11/21100.0*Libertadores100.0*Average seed
Internacional 1 Gremio 0 -0.5
-0.1
Coritiba 1 Santos 0 +0.2
Corinthians 6 Sao Paulo 1 +0.2
+0.0
Atletico-MG 2 Goias 2 +0.1
Week of 11/28100.0*Libertadores100.0*Average seed
Sao Paulo 3 Figueirense 2 -0.1
Fluminense 1 Internacional 1 Yes
Gremio 2 Atletico-MG 1 +0.2
Week of 12/6100.0*Libertadores100.0*Average seed
Atletico-MG 3 Chapecoense 0 -0.3
Joinville 0 Gremio 2 +0.2
Points
Chance Will Win Championship