How are these numbers calculated?

Big Games

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

Week of 1/7100.0*Chance in playoffs100.0*Average seed
Glasgow 12 Munster 14 +0.5
+0.1
Leinster 57 Montpellier 3 +0.2
+0.0
Racing 92 34 Leicester 3 +0.2
Racing 92 7 Munster 32 +0.0
Week of 1/14100.0*Chance in playoffs100.0*Average seed
Exeter 31 Ulster 19 +11.1
+2.1
Northampton 28 Castres 21 +0.3
Bordeaux 6 Clermont 9 +0.2
+0.1
Leicester 0 Glasgow 43 -0.2
Scarlets 22 Saracens 22 -0.1
-0.1
Castres 24 Leinster 24 *-0.1
-0.3
Montpellier 26 Northampton 17 -0.1
-0.0
Wasps 17 Toulouse 14 +0.1
+0.0
Munster 22 Racing 92 11 +0.0
Week of 1/21100.0*Chance in playoffs100.0*Average seed
Clermont 48 Exeter 26 -4.0
-0.6
Sale 25 Scarlets 23 +0.2
+0.1
Saracens 10 Toulon 3 +0.1
+0.0
Ulster 22 Bordeaux 26 -0.1
Toulouse 19 Connacht 10 -0.0

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

Games Above .500
Chance Will Make Playoffs