How are these numbers calculated?

Big Games

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

Week of 4/23100.0*Average seed
Crawley 0 Carlisle 1 +0.1
Notts County 1 Cambridge 2 +0.1
Morecambe 1 Stevenage 4 -0.0
Yeovil 1 Northampton 1 -0.0
Week of 4/30100.0*Average seed
Barnet 3 Yeovil 4 +1.5
Dag & Red 3 Crawley 0 +0.1
Stevenage 0 Wimbledon 0 +0.0
Newport 0 Notts County 1 +0.0
Week of 5/7100.0*Average seed
Yeovil 0 Leyton Orient 1 -1.0
Notts County 0 Carlisle 5 +0.3
Crawley 0 Barnet 3 +0.2
Plymouth 5 Hartlepool 0 +0.2
Accrington 0 Stevenage 0 -0.2
Morecambe 1 York 1 +0.1
Points
Chance Will Win Championship