How are these numbers calculated?

Big Games

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

Week of 5/10100.0*Campeonato Nacional100.0*Average seed
Jiquiá FAC 39 Serafiano 10 +9.5
-0.6
Paternos 25 Poti 15 -2.1
+0.2
Abedi Pelé 18 AE Popular 13 -1.7
+0.0
União Militar 20 Liga Operária 18 +0.3
-0.0
Week of 5/17100.0*Campeonato Nacional100.0*Average seed
Serafiano 30 FAC Metropolitano 27 (ot)-12.2
+0.3
Poti 30 Olímpia 28 +4.6
-0.2
AE Popular 10 Paternos 22 -4.2
+0.2
União Militar 28 Jiquiá FAC 39 -4.0
+0.2
Liga Operária 43 Siliar 37 +2.7
-0.1
Floresta Negra 36 Abedi Pelé 15 +0.1
Week of 5/24100.0*Campeonato Nacional100.0*Average seed
Zopene 37 Serafiano 15 -0.5
Poti 42 Dima Cardinals 42 (ot)+0.2
FAC Metropolitano 27 União Militar 13 +0.2
Points
Chance Will Win Championship