How are these numbers calculated?

Big Games

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

Week of 11/11100.0*Serie C100.0*Average seed
Nautico 1 Londrina 2 +0.8
-0.3
Boa Esporte 4 Santa Cruz 2 +0.2
+0.1
Guarani 2 CRB 1 +0.1
Paysandu 2 Brasil de Pelotas 3 +0.1
Week of 11/17100.0*Serie C100.0*Average seed
Nautico 1 Vila Nova 2 -0.3
ABC 2 Oeste 0 -0.2
Santa Cruz 5 Juventude 2 -0.2
Paysandu 4 Santa Cruz 2 +0.2
Week of 11/24100.0*Serie C100.0*Average seed
Luverdense 3 Nautico 0 -0.2
Ceara 1 ABC 0 +0.1
Points
Chance Will Win Championship