How are these numbers calculated?

Big Games

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

Week of 10/17100.0*Average seed
Hammarby 1 Helsingborg 4 -1.0
Week of 10/24100.0*Average seed
Hammarby 0 Malmö 1 -0.5
Åtvidaberg 2 Örebro 3 -0.3
Kalmar 3 Gefle 1 +0.2
Week of 10/31100.0*Average seed
Halmstad 2 Hammarby 1 -0.8
Örebro 1 AIK 1 -0.2
Gefle 2 Åtvidaberg 1 -0.2
Djurgården 4 GIF Sundsvall 2 +0.1
IFK Göteborg 2 Kalmar 2 +0.0
Points
Chance Will Win Championship