How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Libertadores100.0*Average seed
Corinthians 1 Gremio 0 +21.5
+0.7
Internacional 2 Atletico-MG 1 -1.6
-0.0
Sport Recife 2 Fluminense 2 +0.4
Santos 0 Sao Paulo 1 -0.1
-0.1
Week of 11/29100.0*Libertadores100.0*Average seed
Fluminense 5 Corinthians 2 -7.3
-0.5
Atletico-MG 1 Coritiba 2 +3.7
Internacional 3 Palmeiras 1 -1.3
-0.1
Bahia 1 Gremio 0 +1.0
Sao Paulo 1 Figueirense 1 +0.1
Week of 12/6100.0*Libertadores100.0*Average seed
Figueirense 1 Internacional 2 -0.4
Corinthians 2 Criciuma 1 +0.1
Points
Chance Will Win Championship