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*Average seed
Rochdale 2 Port Vale 2 -0.3
Rotherham 2 Fleetwood Town 1 +0.1
Wycombe 2 Aldershot Town 1 -0.2
Dag & Red 0 Oxford United 1 -0.1
Burton Albion 1 Plymouth Argyle 0 +0.0
Week of 4/20100.0*Average seed
Oxford United 3 Rochdale 0 -1.5
Bristol Rovers 0 Accrington 1 +0.2
Barnet 1 Wycombe 0 +0.2
York 2 Southend 1 +0.1
Morecambe 0 Torquay United 2 +0.1
Plymouth Argyle 0 Rotherham 1 +0.1
Fleetwood Town 1 Chesterfield 3 +0.0
Week of 4/27100.0*Average seed
Rochdale 1 Plymouth Argyle 0 +1.2
AFC Wimbledon 2 Fleetwood Town 1 +0.2
Southend 0 Morecambe 1 -0.1
Wycombe 1 Port Vale 1 +0.0
Torquay United 3 Bristol Rovers 3 +0.0
Points
Chance Will Win Championship