How are these numbers calculated?

Big Games

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

Week of 11/24100.0*Libertadores100.0*Average seed
Parana 2 Santos 3 +20.3
+0.9
Fluminense 3 Juventude 2 -6.2
-0.1
Flamengo 2 Atletico-PR 0 -5.2
-0.3
Internacional 2 Palmeiras 1 +3.6
+0.2
Sport Recife 1 Cruzeiro 0 +3.3
+0.2
America-RN 0 Gremio 3 -2.4
-0.1
Week of 12/2100.0*Libertadores100.0*Average seed
Nautico 1 Flamengo 0 +0.2
Santos 2 Fluminense 4 -0.1
Points
Chance Will Win Championship