How are these numbers calculated?

Big Games

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

Week of 10/21100.0*Average seed
Athletic FC 2 Elfsborg 3 -0.2
IFK Göteborg 0 Östersund 1 +0.2
Hammarby 3 Sirius 3 +0.1
J-Södra 2 Kalmar 0 +0.0
Week of 10/28100.0*Average seed
Sirius 0 Malmö 4 -0.6
GIF Sundsvall 1 Hammarby 4 -0.3
IFK Norrköping 2 Örebro 0 +0.1
Östersund 4 Elfsborg 1 +0.1
AIK 2 IFK Göteborg 1 +0.1
Häcken 2 Kalmar 0 +0.0
Week of 11/5100.0*Average seed
Athletic FC 1 Sirius 3 +0.9
IFK Göteborg 0 GIF Sundsvall 3 +0.4
Elfsborg 3 IFK Norrköping 3 +0.4
Hammarby 1 Halmstad 3 +0.3
Örebro 1 AIK 2 +0.1
Points
Chance Will Win Championship