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*Relegated100.0*Average seed
Charlton 2 Wycombe 1 +5.9
-0.2
Exeter City 4 Walsall 2 -4.4
Leyton Orient 2 Yeovil 2 +0.4
Chesterfield 2 Rochdale 1 +0.2
-0.1
Oldham 1 Preston 1 +0.1
Week of 4/28100.0*Relegated100.0*Average seed
Wycombe 3 Notts County 4 +8.1
-0.4
Walsall 1 Huddersfield 1 +2.0
-0.0
Hartlepool 2 Leyton Orient 1 -1.6
Yeovil 3 Chesterfield 2 -0.3
+0.2
Carlisle 4 Exeter City 1 +0.1
Week of 5/5100.0*Relegated100.0*Average seed
Chesterfield 2 Brentford 3 +0.3
Sheff Wed 2 Wycombe 0 -0.2
Exeter City 2 Sheff United 2 +0.1
Points
Chance Will Win Championship