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
FC Porto 0 CD Nacional 3 -0.4
Boavista 0 Braga 0 -0.2
Académica 1 Naval 1º de Maio 1 +0.1
Estrela Amadora 0 Benfica 0 +0.0
Week of 5/10100.0*Average seed
CD Nacional 1 Belenenses 2 +0.5
Sporting Lisbon 2 Boavista 1 -0.2
Braga 2 Académica 1 -0.0
Points
Chance Will Win Championship