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
Mansfield 0 Rotherham 1 +27.2
-0.6
Darlington 2 Dag & Red 3 +9.4
-0.2
Notts County 1 Wycombe 0 +9.2
-0.3
Shrewsbury 0 Chester 0 +0.7
-0.0
Chester 0 Stockport 0 +0.3
+0.0
Macclesfield 1 Chesterfield 0 -0.1
Week of 5/3None
Points
Chance Will Win Championship