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
Paços Ferreira 0 Sporting Lisbon 1 +0.4
Estrela Amadora 0 Benfica 0 +0.1
Belenenses 1 Guimaraes 1 -0.0
Week of 5/10100.0*Average seed
Sporting Lisbon 2 Boavista 1 +0.1
Guimaraes 4 Estrela Amadora 0 -0.0
Benfica 3 Vitoria Setubal 0 -0.0
Points
Chance Will Win Championship