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
Millwall 2 Leyton Orient 1 +1.0
-0.3
Norwich 2 Gillingham 0 -0.4
+0.1
Wycombe 2 Swindon 2 -0.4
Colchester 1 Tranmere 1 +0.1
Brentford 1 Yeovil 1 +0.1
-0.0
Exeter City 1 Charlton 1 -0.1
+0.1
Oldham 2 Southend 2 +0.0
Brighton 2 Bristol Rovers 1 -0.0
Week of 5/1100.0*Relegated100.0*Average seed
Tranmere 2 Millwall 0 +3.7
-0.2
Gillingham 2 Southampton 1 +2.4
-0.3
Leyton Orient 2 Wycombe 0 -2.1
+0.6
Hartlepool 1 Exeter City 1 +0.7
Yeovil 3 Oldham 0 -0.2
Week of 5/8100.0*Relegated100.0*Average seed
Exeter City 2 Huddersfield 1 +3.1
-0.3
Stockport 0 Tranmere 3 +2.8
-0.2
Wycombe 3 Gillingham 0 No
+0.2
Colchester 1 Leyton Orient 0 +1.2
-0.6
Oldham 0 Charlton 2 +0.1
Brighton 1 Yeovil 0 +0.0
Brentford 0 Hartlepool 0 +0.0
Points
Chance Will Win Championship