How are these numbers calculated?

Big Games

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

Week of 7/20100.0*Segunda Division B100.0*Average seed
Cadiz 0 Albacete 1 +33.4
-0.5
Lugo 2 Mirandes 1 No
+0.6
Numancia 2 Tenerife 1 +4.4
-0.3
Almeria 0 Malaga 0 -0.0
Week of 8/7None
Points
Chance Will Win Championship