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 A100.0*Average seed
Chapecoense 1 Ponte Preta 0 -3.4
-0.7
Ponte Preta 2 Nautico 0 +2.2
+1.1
Avai 5 Juventude 2 +1.9
-0.1
Botafogo-SP 1 CSA 3 -1.4
-0.1
Juventude 1 Cruzeiro 0 -1.1
+0.0
CSA 1 Avai 1 +0.8
+0.0
Parana 0 Cuiaba 2 -0.4
Cruzeiro 2 Operario-PR 1 +0.1
+0.1
Confianca 0 Sampaio Correa 1 -0.1
-0.2
Figueirense 3 Brasil de Pelotas 0 +0.1
+0.1
Sampaio Correa 2 Parana 1 -0.1
Guarani 1 Vitoria 2 +0.1
CRB 5 Figueirense 1 -0.1
Brasil de Pelotas 0 America-MG 0 +0.0
Week of 1/22100.0*Serie A100.0*Average seed
Juventude 2 Figueirense 1 No
-0.1
Cuiaba 1 Sampaio Correa 3 -0.3
-0.3
CSA 1 Brasil de Pelotas 1 -0.2
Ponte Preta 3 CRB 1 +1.0
Operario-PR 2 Chapecoense 0 -0.2
Avai 2 Guarani 1 -0.2
Cruzeiro 0 Nautico 0 +0.0
Week of 1/29100.0*Serie A100.0*Average seed
Figueirense 2 Ponte Preta 7 +1.0
Sampaio Correa 1 Oeste 0 -0.3
Botafogo-SP 0 Operario-PR 1 -0.2
America-MG 2 Avai 1 +0.1
Nautico 1 CSA 1 -0.0
Points
Chance Will Win Championship