How are these numbers calculated?

Big Games

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

Week of 4/26100.0*Average seed
Port Vale 2 Northampton 2 -0.2
Oldham 2 Cheltenham 1 -0.1
Bristol Rovers 0 Brighton 2 -0.1
Tranmere 1 Southend 0 -0.1
Gillingham 1 Swindon 1 +0.1
Week of 5/3100.0*Average seed
Northampton 2 Tranmere 1 +1.2
Crewe 1 Oldham 4 -0.3
Luton 0 Huddersfield 1 -0.3
Walsall 2 Hartlepool 2 +0.2
Points
Chance Will Win Championship