How are these numbers calculated?

Big Games

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

Week of 4/23100.0*Average seed
Veria 4 Asteras 3 +0.1
Week of 4/30100.0*Average seed
Panionios 1 Levadiakos 3 -0.2
Xanthi 3 Veria 0 -0.2
Points
Chance Will Make Playoffs