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 +1.9
+0.1
Chesterfield 2 Bradford City 2 +1.5
+0.2
Cheltenham Town 1 Gillingham 0 -0.8
-0.1
Burton Albion 1 Plymouth Argyle 0 -0.7
-0.1
AFC Wimbledon 2 Exeter City 2 +0.5
+0.0
Rotherham 2 Fleetwood Town 1 -0.5
-0.1
Week of 4/20100.0*League One100.0*Average seed
Bradford City 1 Burton Albion 0 +6.0
+0.5
Exeter City 0 Cheltenham Town 1 +3.7
+0.2
Fleetwood Town 1 Chesterfield 3 -1.1
-0.1
York 2 Southend 1 +0.4
+0.1
Port Vale 2 Northampton 2 -0.1
Week of 4/27100.0*League One100.0*Average seed
Cheltenham Town 0 Bradford City 0 -0.1
Northampton 2 Barnet 0 -0.1
Points
Chance Will Win Championship