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
Nautico 4 Oeste 1 -19.4
+0.6
Ponte Preta 2 Nautico 0 +15.1
-0.6
Guarani 1 Vitoria 2 +6.6
-0.2
CRB 5 Figueirense 1 -6.2
+0.2
Figueirense 3 Brasil de Pelotas 0 +5.3
-0.1
Sampaio Correa 2 Parana 1 -4.4
+0.1
Parana 0 Cuiaba 2 -4.3
+0.1
Vitoria 0 Chapecoense 0 -2.1
+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 +0.5
-0.1
Juventude 1 Cruzeiro 0 -0.1
+0.1
Cruzeiro 2 Operario-PR 1 -0.1
Week of 1/22100.0*Serie C100.0*Average seed
Juventude 2 Figueirense 1 -8.4
+0.1
Cruzeiro 0 Nautico 0 No
-0.1
Vitoria 1 Botafogo-SP 0 -0.3
Week of 1/29100.0*Serie C100.0*Average seed
Brasil de Pelotas 0 Vitoria 1 -0.2
Nautico 1 CSA 1 -0.2
Points
Chance Will Win Championship