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*Relegated100.0*Average seed
Darlington 2 Dag & Red 3 +4.7
-0.3
Mansfield 0 Rotherham 1 -2.5
+0.1
Shrewsbury 0 Chester 0 -1.3
+0.1
Notts County 1 Wycombe 0 +0.9
-0.2
Chester 0 Stockport 0 -0.8
-0.1
Macclesfield 1 Chesterfield 0 -0.2
Brentford 0 Hereford 3 +0.1
Wrexham 1 Accrington 3 -0.2
Week of 5/3100.0*Relegated100.0*Average seed
Chester 0 Macclesfield 0 -0.6
Dag & Red 2 Mansfield 0 -0.2
Chesterfield 1 Notts County 1 -0.1
Points
Chance Will Win Championship