How are these numbers calculated?

Big Games

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

Week of 5/7100.0*Average seed
Paços de Ferreira 0 Feirense 1 +0.7
Tondela 2 Vitória Setúbal 1 +0.2
Boavista 2 Nacional 2 +0.1
Estoril 1 Chaves 1 +0.1
Vitória Guimarães 1 Arouca 0 +0.0
Week of 5/14100.0*Average seed
Feirense 2 Sporting CP 1 +0.1
Chaves 2 Rio Ave 2 +0.0
Week of 5/21100.0*Average seed
Vitória Guimarães 0 Feirense 1 +0.4
Rio Ave 2 Belenenses 0 -0.1
Points
Chance Will Win Championship