How are these numbers calculated?

Big Games

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

Week of 1/15100.0*Serie C100.0*Average seed
CRB 5 Figueirense 1 +19.8
-0.6
Figueirense 3 Brasil de Pelotas 0 -19.2
+0.7
Guarani 1 Vitoria 2 +9.4
-0.2
Nautico 4 Oeste 1 +9.2
-0.2
Ponte Preta 2 Nautico 0 -5.9
+0.2
Parana 0 Cuiaba 2 -4.4
+0.1
Sampaio Correa 2 Parana 1 -4.0
+0.1
Vitoria 0 Chapecoense 0 -2.4
+0.1
Botafogo-SP 1 CSA 3 -1.5
+0.1
America-MG 1 Botafogo-SP 1 -0.8
+0.0
Oeste 0 Confianca 1 +0.6
-0.1
Juventude 1 Cruzeiro 0 -0.1
Week of 1/22100.0*Serie C100.0*Average seed
Juventude 2 Figueirense 1 +20.7
-0.5
Vitoria 1 Botafogo-SP 0 Yes
+0.0
Cruzeiro 0 Nautico 0 +4.1
-0.1
Oeste 1 Parana 0 -0.8
+0.2
Week of 1/29100.0*Serie C100.0*Average seed
Figueirense 2 Ponte Preta 7 -0.2
Parana 0 Cruzeiro 0 +0.1
Points
Chance Will Win Championship