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
Sporting CP 1 Belenenses 3 +1.2
Moreirense 2 Sporting Braga 1 -0.1
Vitória Guimarães 1 Arouca 0 +0.1
Paços de Ferreira 0 Feirense 1 +0.1
Estoril 1 Chaves 1 +0.0
Boavista 2 Nacional 2 +0.0
Week of 5/14100.0*Average seed
Belenenses 1 Moreirense 1 -0.2
Arouca 1 Tondela 2 +0.1
Porto 4 Paços de Ferreira 1 +0.1
Marítimo 1 Estoril 1 +0.0
Chaves 2 Rio Ave 2 -0.0
Week of 5/21100.0*Average seed
Rio Ave 2 Belenenses 0 -0.7
Estoril 4 Arouca 2 -0.6
Nacional 1 Vitória Setúbal 2 -0.2
Paços de Ferreira 0 Marítimo 0 -0.1
Points
Chance Will Win Championship