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
Xanthi 1 Larissa 0 +24.5
+0.3
Asteras 2 Apollon 1 -23.7
-0.3
Olympiakos 4 Panetolikos 0 +0.8
+0.0
Platanias 1 Panionios 2 +0.4
Levadiakos 0 Atromitos 1 +0.3
+0.0
Week of 5/6100.0*Chance in playoffs100.0*Average seed
Panathinaikos 1 Xanthi 2 +34.1
+0.3
Panetolikos 0 Asteras 2 -33.1
-0.3
Points
Chance Will Make Playoffs