How are these numbers calculated?

Big Games

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

Week of 4/19100.0*Average seed
Treviso 30 Edinburgh 10 +0.2
Connacht 18 Ulster 34 +0.1
Scarlets 24 Blues 6 +0.0
Week of 4/26100.0*Average seed
Treviso 23 Connacht 23 -0.1
Week of 5/3100.0*Average seed
Scarlets 17 Treviso 41 +0.3
Connacht 3 Glasgow 20 +0.3
Ulster 37 Blues 13 +0.0
Games Above .500
Chance Will Make Playoffs