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
Wrexham 1 Accrington 3 +0.7
Macclesfield 1 Chesterfield 0 -0.3
Notts County 1 Wycombe 0 -0.1
Shrewsbury 0 Chester 0 +0.1
Darlington 2 Dag & Red 3 -0.1
Chester 0 Stockport 0 +0.0
Week of 5/3100.0*Average seed
Accrington 0 Bury 2 -0.3
Chester 0 Macclesfield 0 +0.2
Rochdale 1 Shrewsbury 1 +0.2
Points
Chance Will Win Championship