How are these numbers calculated?

Big Games

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

Week of 4/13100.0*Championship100.0*Average seed
Crawley Town 2 Coventry 0 -0.2
-0.9
Sheff Utd 2 Swindon 0 +0.1
Tranmere 0 Hartlepool 1 +0.2
Leyton Orient 2 MK Dons 0 -0.1
Swindon 4 Crewe 1 No
+0.0
Scunthorpe 1 Walsall 1 +0.0
Colchester 0 MK Dons 2 -0.1
Crewe 1 Doncaster 2 +0.1
Notts County 3 Colchester 1 -0.0
Week of 4/20100.0*Championship100.0*Average seed
Coventry 0 Leyton Orient 1 -1.2
Doncaster 0 Notts County 1 -0.3
MK Dons 0 Scunthorpe 1 +0.2
Crawley Town 1 Preston 0 -0.2
Oldham 2 Crawley Town 1 +0.2
Preston 1 Tranmere 0 +0.1
Walsall 1 Bury 1 +0.0
Yeovil 1 Crewe 0 +0.0
Week of 4/27100.0*Championship100.0*Average seed
Notts County 2 Coventry 2 -0.4
Crawley Town 2 Hartlepool 2 +0.1
Tranmere 0 Bournemouth 0 +0.1
Stevenage 0 MK Dons 2 -0.0
Points
Chance Will Win Championship