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
Brasiliense 0 Nautico 1 -21.6
+1.2
Ipatinga 2 Duque de Caxias 0 +2.4
-0.1
America-RN 5 Guaratingueta 2 -1.8
+0.1
Ponte Preta 0 Icasa 1 +1.5
-0.1
Bragantino 5 Vila Nova 1 -1.0
+0.0
Sport Recife 1 Santo Andre 1 -0.3
Week of 11/19100.0*Serie C100.0*Average seed
Nautico 4 Vila Nova 1 No
+1.3
Brasiliense 2 Ponte Preta 1 +2.0
+0.1
Portuguesa 2 Ipatinga 1 -1.8
+0.0
Guaratingueta 2 Figueirense 2 -0.7
+0.1
Icasa 2 Coritiba 2 +0.1
Week of 11/26100.0*Serie C100.0*Average seed
Santo Andre 1 Nautico 0 -0.9
Ponte Preta 0 America-MG 0 +0.4
Ipatinga 2 Icasa 2 -0.4
Duque de Caxias 1 ASA 1 +0.1
Points
Chance Will Win Championship