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
Botafogo 1 Internacional 2 +5.6
+0.0
Goias 1 Santos 4 -2.1
-0.1
Sao Paulo 1 Fluminense 4 +0.3
+0.0
Cruzeiro 3 Vasco da Gama 1 -0.2
Week of 11/28100.0*Libertadores100.0*Average seed
Guarani 0 Gremio 3 +21.5
+0.7
Avai 3 Santos 2 +5.7
+0.2
Ceara 1 Atletico-PR 1 +3.8
+0.1
Botafogo 3 Gremio Prudente 1 -3.7
-0.2
Internacional 1 Vitoria 1 +1.9
+0.1
Week of 12/5100.0*Libertadores100.0*Average seed
Gremio 3 Botafogo 0 Yes
+0.5
Atletico-PR 1 Avai 0 -0.2
Points
Chance Will Win Championship