How are these numbers calculated?

Big Games

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

Week of 11/12100.0*Serie C100.0*Average seed
Sport Recife 1 Santo Andre 1 +1.0
-0.1
America-RN 5 Guaratingueta 2 -0.3
-0.3
Ipatinga 2 Duque de Caxias 0 +0.1
-0.2
Bragantino 5 Vila Nova 1 -0.1
Brasiliense 0 Nautico 1 +0.1
Week of 11/19100.0*Serie C100.0*Average seed
Bahia 1 Santo Andre 2 -2.0
+0.8
Guaratingueta 2 Figueirense 2 Yes
Brasiliense 2 Ponte Preta 1 +0.3
-0.1
ASA 1 America-RN 2 +0.2
-0.2
Portuguesa 2 Ipatinga 1 -0.2
+0.0
Week of 11/26100.0*Serie C100.0*Average seed
Santo Andre 1 Nautico 0 +1.0
Ipatinga 2 Icasa 2 +0.3
Points
Chance Will Win Championship