How are these numbers calculated?

Big Games

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

Week of 4/29100.0*Chance in playoffs100.0*Average seed
Asteras 2 Apollon 1 Out
Levadiakos 0 Atromitos 1 Out
-0.7
Xanthi 1 Larissa 0 Out
Olympiakos 4 Panetolikos 0 +0.3
+0.2
Panathinaikos 0 PAOK 3 +0.1
Lamia 2 Giannina 1 +0.1
Platanias 1 Panionios 2 -0.1
Week of 5/6100.0*Chance in playoffs100.0*Average seed
Panionios 2 Levadiakos 0 -1.1
Panathinaikos 1 Xanthi 2 +0.4
Giannina 3 Olympiakos 0 -0.2
Panetolikos 0 Asteras 2 +0.2
Points
Chance Will Make Playoffs