How are these numbers calculated?

Big Games

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

Week of 4/3100.0*Relegated100.0*Average seed
Olympiakos 4 Panthrakikos 0 No
Panathinaikos 3 Veria 2 -0.0
Platanias 3 Xanthi 1 +0.0
Week of 4/10100.0*Relegated100.0*Average seed
Veria 1 Xanthi 1 -0.1
Week of 4/17None
Points
Chance Will Make Playoffs