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
Santos 4 Coritiba 0 +3.7
-1.1
Sport Recife 0 Fluminense 3 +1.8
-0.1
Botafogo 3 Sao Paulo 2 +1.3
-0.1
Santo Andre 4 Avai 2 +0.2
Vitoria 2 Barueri 1 +0.2
-0.1
Corinthians 2 Nautico 3 +0.2
+0.1
Atletico-PR 1 Cruzeiro 1 +0.1
Week of 11/29100.0*Serie B100.0*Average seed
Cruzeiro 4 Coritiba 1 +19.4
-1.0
Fluminense 4 Vitoria 0 +5.1
Atletico-PR 2 Botafogo 0 -2.8
-0.0
Santo Andre 5 Nautico 3 +0.3
Gremio 4 Barueri 2 +0.1
Week of 12/5100.0*Serie B100.0*Average seed
Botafogo 2 Palmeiras 1 +26.2
-0.3
Internacional 4 Santo Andre 1 -4.7
+0.1
Coritiba 1 Fluminense 1 -1.8
-0.5
Barueri 0 Atletico-PR 0 -0.1
Vitoria 2 Goias 2 -0.1
Points
Chance Will Win Championship