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*Relegated100.0*Average seed
Paços Ferreira 0 Sporting Lisbon 1 -13.6
+0.1
Vitoria Setubal 2 Leixoes 0 +9.3
-0.3
Maritimo 2 Uniao Leiria 0 +0.8
Académica 1 Naval 1º de Maio 1 -0.0
Estrela Amadora 0 Benfica 0 -0.0
Belenenses 1 Guimaraes 1 +0.3
Week of 5/10100.0*Relegated100.0*Average seed
Leixoes 0 Maritimo 1 +20.0
-0.2
Uniao Leiria 1 Paços Ferreira 1 No
+0.1
Braga 2 Académica 1 +0.3
CD Nacional 1 Belenenses 2 +0.3
Guimaraes 4 Estrela Amadora 0 +0.2
Naval 1º de Maio 0 FC Porto 2 +0.2
Benfica 3 Vitoria Setubal 0 +0.2
Points
Chance Will Win Championship