How are these numbers calculated?

Big Games

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

Week of 5/1100.0*Relegated100.0*Average seed
Valencia 3 Xerez 1 +4.7
-0.3
Xerez 2 Almería 1 -3.6
+0.3
Barcelona 4 Tenerife 1 -1.0
+0.1
Deportivo 0 Real Zaragoza 1 +0.9
Tenerife 2 Racing 1 +0.6
-0.1
Atlético Madrid 3 Valladolid 1 -0.2
+0.1
Valladolid 0 Getafe 0 -0.2
Almería 4 Villarreal 2 +0.1
Málaga 1 Sporting de Gij 1 -0.1
Getafe 1 Sporting de Gij 1 +0.1
Week of 5/8100.0*Relegated100.0*Average seed
Xerez 3 Real Zaragoza 2 -0.9
+0.3
Getafe 2 Málaga 1 -0.8
Tenerife 2 Almería 2 -0.1
Valladolid 2 Racing 1 -0.1
Week of 5/16None
Points
Chance Will Win Championship