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 +0.6
-1.0
Granada 3 Las Palmas 2 +0.3
+0.0
Atlético Madrid 1 Rayo Vallecano 0 -0.2
+0.1
Sporting Gijón 2 Eibar 0 +0.2
+0.1
Espanyol 1 Sevilla 0 +0.1
-0.2
Real Betis 0 Barcelona 2 +0.1
Real Sociedad 0 Real Madrid 1 +0.1
Málaga 3 Levante 1 -0.1
Valencia 0 Villarreal 2 +0.1
Week of 5/13100.0*Segunda Division100.0*Average seed
Valencia 0 Real Sociedad 1 +0.1
Week of 5/15100.0*Segunda Division100.0*Average seed
Deportivo 0 Real Madrid 2 -1.7
Real Betis 2 Getafe 1 -0.2
Málaga 4 Las Palmas 1 +0.2
Granada 0 Barcelona 3 +0.1
Espanyol 4 Eibar 2 +0.1
Points
Chance Will Win Championship