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
Palmeiras 1 Gremio 2 Yes
+0.4
Botafogo 1 Corinthians 0 +0.1
Internacional 2 Fortaleza 2 +0.0
Ceara 1 Sao Paulo 1 +0.0
Atletico-MG 0 Athletico-PR 1 -0.1
Sao Paulo 1 Vasco da Gama 0 -0.1
Week of 12/1100.0*Libertadores100.0*Average seed
Gremio 3 Sao Paulo 0 +0.5
Gremio 2 Cruzeiro 0 +0.2
Athletico-PR 1 Santos 0 -0.2
Week of 12/8100.0*Libertadores100.0*Average seed
Goias 3 Gremio 2 -0.4
Avai 0 Athletico-PR 0 +0.2
Points
Chance Will Win Championship