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
Tenerife 2 Racing 1 -23.0
+1.0
Barcelona 4 Tenerife 1 +21.2
-1.0
Atlético Madrid 3 Valladolid 1 -4.3
+0.2
Racing 1 Sevilla 5 -4.2
+0.1
Deportivo 0 Real Zaragoza 1 +4.0
-0.1
Real Zaragoza 1 Espanyol 0 +2.1
-0.1
Almería 4 Villarreal 2 +1.8
-0.1
Athletic Bilbao 1 Málaga 1 -1.5
+0.0
Valladolid 0 Getafe 0 -1.2
+0.0
Valencia 3 Xerez 1 -0.7
+0.1
Getafe 1 Sporting de Gij 1 +0.4
Xerez 2 Almería 1 -0.4
Osasuna 3 Deportivo 1 +0.3
Málaga 1 Sporting de Gij 1 -0.2
+0.0
Real Madrid 3 Osasuna 2 -0.2
Week of 5/8100.0*Relegated100.0*Average seed
Tenerife 2 Almería 2 +11.9
-0.3
Getafe 2 Málaga 1 -9.5
+0.2
Valladolid 2 Racing 1 -3.5
-0.1
Sporting de Gij 1 Atlético Madrid 1 +1.5
Week of 5/16100.0*Relegated100.0*Average seed
Valencia 1 Tenerife 0 +38.8
-0.9
Racing 2 Sporting de Gij 0 +12.9
-0.3
Barcelona 4 Valladolid 0 -12.9
+0.3
Points
Chance Will Win Championship