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
Ponte Preta 0 Icasa 1 No
+1.5
Ipatinga 2 Duque de Caxias 0 +1.5
America-RN 5 Guaratingueta 2 -1.3
+0.2
Bragantino 5 Vila Nova 1 -0.8
-0.0
Brasiliense 0 Nautico 1 -0.5
-0.1
Sport Recife 1 Santo Andre 1 -0.1
Week of 11/19100.0*Serie C100.0*Average seed
Icasa 2 Coritiba 2 -0.3
Brasiliense 2 Ponte Preta 1 +0.2
Nautico 4 Vila Nova 1 -0.2
Parana 0 Bragantino 0 +0.1
Guaratingueta 2 Figueirense 2 +0.0
Week of 11/26100.0*Serie C100.0*Average seed
Ipatinga 2 Icasa 2 -0.5
Santo Andre 1 Nautico 0 +0.3
Bragantino 2 Bahia 0 -0.3
Ponte Preta 0 America-MG 0 +0.2
Duque de Caxias 1 ASA 1 +0.2
Points
Chance Will Win Championship