How are these numbers calculated?

Big Games

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

Week of 4/21100.0*Promoted100.0*Average seed
Stevenage 2 Brentford 1 -1.5
-0.4
Notts County 2 Bury 4 +1.1
+0.2
Sheff Wed 2 Carlisle 1 +0.2
+0.1
Week of 4/28100.0*Promoted100.0*Average seed
Brentford 1 Sheff Wed 2 No
-0.3
Wycombe 3 Notts County 4 -0.1
-0.1
Carlisle 4 Exeter City 1 -0.2
Week of 5/5None
Points
Chance Will Win Championship