How are these numbers calculated?

Big Games

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

Week of 9/15100.0*Average seed
FC Vapsi 1 FC Melody 8 +0.3
Tuisku 1 LaVe 1 +0.1
TaPa 3 UrPS 0 +0.0
Week of 9/22100.0*Average seed
FC Melody 6 PELIKASSIT 2 +0.6
UrPS 2 Härmä/2 0 +0.2
PoNU Bk 2 TaPa 1 -0.2
LaVe 2 VesVi 2 +0.1
Week of 9/29100.0*Average seed
FC Teivo 2 FC Melody 6 +0.2
Härmä/2 2 PoNU Bk 4 -0.0
Points
Chance Will Win Championship