How are these numbers calculated?

Big Games

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

Week of 5/3100.0*Average seed
Belenenses 1 Guimaraes 1 -0.3
Maritimo 2 Uniao Leiria 0 -0.1
Vitoria Setubal 2 Leixoes 0 -0.1
Week of 5/10100.0*Average seed
CD Nacional 1 Belenenses 2 +0.7
Leixoes 0 Maritimo 1 -0.3
Benfica 3 Vitoria Setubal 0 +0.1
Points
Chance Will Win Championship