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*Serie B100.0*Average seed
Coritiba 1 Santos 0 +0.3
Fluminense 3 Avai 1 No
+0.5
Figueirense 0 Chapecoense 0 -0.0
+0.1
Week of 11/28100.0*Serie B100.0*Average seed
Chapecoense 1 Goias 3 +0.3
Fluminense 1 Internacional 1 -0.2
Palmeiras 0 Coritiba 2 +0.1
Atletico-PR 3 Flamengo 0 -0.1
Week of 12/6100.0*Serie B100.0*Average seed
Figueirense 1 Fluminense 0 -0.6
Atletico-MG 3 Chapecoense 0 +0.2
Flamengo 1 Palmeiras 2 +0.1
Points
Chance Will Win Championship