How are these numbers calculated?

Big Games

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

Week of 5/24100.0*Segunda Division B100.0*Average seed
Tenerife 2 Oviedo 1 -8.4
+0.5
Numancia 1 Reus 0 +0.2
-0.1
Week of 5/31100.0*Segunda Division B100.0*Average seed
Lugo 0 Tenerife 1 No
+1.4
Oviedo 4 Rayo 3 No
Zaragoza 0 Numancia 0 +0.0
Cadiz 0 Extremadura 1 -0.1
Week of 6/8100.0*Segunda Division B100.0*Average seed
Tenerife 1 Zaragoza 0 +1.5
Granada 2 Alcorcon 1 +0.2
Numancia 1 Las Palmas 1 +0.1
Points
Chance Will Win Championship