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 +0.1
-0.1
Leinster 57 Montpellier 3 -0.0
Racing 92 7 Munster 32 -0.0
Week of 1/14100.0*Chance in playoffs100.0*Average seed
Bordeaux 6 Clermont 9 In
+0.7
Exeter 31 Ulster 19 +1.5
+0.1
Northampton 28 Castres 21 +0.1
Scarlets 22 Saracens 22 +0.1
Munster 22 Racing 92 11 -0.0
Castres 24 Leinster 24 +0.0
Week of 1/21100.0*Chance in playoffs100.0*Average seed
Clermont 48 Exeter 26 +0.2
Toulouse 19 Connacht 10 -0.2
Saracens 10 Toulon 3 -0.1
Games Above .500
Chance Will Make Playoffs