How are these numbers calculated?

Big Games

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

Week of 4/24100.0*Relegated100.0*Average seed
Wycombe 2 Swindon 2 +3.1
-0.2
Norwich 2 Gillingham 0 -1.8
Millwall 2 Leyton Orient 1 -1.0
Colchester 1 Tranmere 1 -0.4
Exeter City 1 Charlton 1 +0.2
Oldham 2 Southend 2 -0.1
+0.1
Brentford 1 Yeovil 1 +0.1
Week of 5/1100.0*Relegated100.0*Average seed
Leyton Orient 2 Wycombe 0 Yes
-0.4
Gillingham 2 Southampton 1 +3.1
-0.1
Tranmere 2 Millwall 0 +2.3
-0.1
Hartlepool 1 Exeter City 1 +0.4
Southend 2 Stockport 1 -0.2
Week of 5/8100.0*Relegated100.0*Average seed
Wycombe 3 Gillingham 0 +0.4
Southampton 3 Southend 1 +0.1
Points
Chance Will Win Championship