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
Granada 3 Las Palmas 2 -24.5
+0.8
Sporting Gijón 2 Eibar 0 +8.9
-0.2
Deportivo 0 Getafe 2 +8.8
-0.1
Atlético Madrid 1 Rayo Vallecano 0 -3.5
+0.1
Espanyol 1 Sevilla 0 +1.0
-0.1
Málaga 3 Levante 1 -0.9
+0.1
Week of 5/13None
Week of 5/15100.0*Segunda Division100.0*Average seed
Granada 0 Barcelona 3 -0.4
Espanyol 4 Eibar 2 -0.3
Deportivo 0 Real Madrid 2 +0.1
Real Betis 2 Getafe 1 +0.1
Points
Chance Will Win Championship