How are these numbers calculated?

Big Games

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

Week of 5/2100.0*Segunda Division100.0*Average seed
Deportivo 0 Getafe 2 +2.3
+0.0
Espanyol 1 Sevilla 0 -2.2
+0.9
Granada 3 Las Palmas 2 +1.8
-0.1
Sporting Gijón 2 Eibar 0 +1.3
Atlético Madrid 1 Rayo Vallecano 0 -0.2
+0.1
Week of 5/13None
Week of 5/15100.0*Segunda Division100.0*Average seed
Espanyol 4 Eibar 2 +1.2
Granada 0 Barcelona 3 +0.2
Real Betis 2 Getafe 1 -0.1
Deportivo 0 Real Madrid 2 +0.1
Points
Chance Will Win Championship