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
Rotherham 2 Fleetwood Town 1 +12.8
+0.8
Burton Albion 1 Plymouth Argyle 0 -4.3
-0.2
Northampton 0 York 2 +2.8
+0.1
Cheltenham Town 1 Gillingham 0 -2.3
-0.2
Chesterfield 2 Bradford City 2 +0.4
+0.1
AFC Wimbledon 2 Exeter City 2 +0.2
+0.0
Rochdale 2 Port Vale 2 -0.1
Week of 4/20100.0*League One100.0*Average seed
Plymouth Argyle 0 Rotherham 1 +21.2
+0.6
Bradford City 1 Burton Albion 0 +10.7
+0.2
Exeter City 0 Cheltenham Town 1 -6.0
-0.2
Port Vale 2 Northampton 2 +0.1
Week of 4/27100.0*League One100.0*Average seed
Rotherham 2 Aldershot Town 0 Yes
+0.7
Cheltenham Town 0 Bradford City 0 +10.4
+0.2
Burton Albion 3 Gillingham 2 -7.8
-0.2
Wycombe 1 Port Vale 1 +0.1
Points
Chance Will Win Championship