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*League One100.0*Average seed
Northampton 0 York 2 -18.1
-1.0
Burton Albion 1 Plymouth Argyle 0 -4.2
-0.1
Rotherham 2 Fleetwood Town 1 -2.8
-0.1
Cheltenham Town 1 Gillingham 0 -2.8
-0.2
Chesterfield 2 Bradford City 2 +0.3
+0.0
AFC Wimbledon 2 Exeter City 2 +0.1
Week of 4/20100.0*League One100.0*Average seed
Plymouth Argyle 0 Rotherham 1 -0.8
Port Vale 2 Northampton 2 -0.5
+0.0
Exeter City 0 Cheltenham Town 1 -0.2
-0.2
Bradford City 1 Burton Albion 0 +0.1
Week of 4/27100.0*League One100.0*Average seed
Northampton 2 Barnet 0 +0.3
Burton Albion 3 Gillingham 2 -0.2
Cheltenham Town 0 Bradford City 0 +0.1
Points
Chance Will Win Championship