How are these numbers calculated?

Big Games

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

Week of 4/25100.0*Average seed
Macclesfield 2 Barnet 1 -0.2
Notts County 0 Dag & Red 3 +0.2
Accrington 1 Chesterfield 0 -0.1
Bournemouth 2 Grimsby 1 +0.0
Port Vale 1 Wycombe 1 -0.0
Week of 5/2100.0*Average seed
Barnet 1 Port Vale 2 +0.9
Wycombe 1 Notts County 2 -0.6
Morecambe 0 Bournemouth 4 -0.6
Grimsby 0 Macclesfield 0 -0.1
Points
Chance Will Win Championship