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
Numancia 2 Tenerife 1 +9.2
-0.1
Cadiz 0 Albacete 1 +6.8
-0.2
Lugo 2 Mirandes 1 +1.0
-0.0
Las Palmas 5 Extremadura 1 +0.1
Week of 8/7None
Points
Chance Will Win Championship