How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 4/23100.0*League One100.0*Average seed
Wimbledon 0 Portsmouth 1 +0.5
+0.6
Plymouth 2 Dag & Red 3 +0.4
+0.1
Portsmouth 2 Wycombe 1 +0.3
+0.2
Bristol Rovers 3 Exeter 1 -0.2
Oxford Utd 2 Hartlepool 0 -0.1
Accrington 3 York 0 -0.1
Wimbledon 1 Leyton Orient 0 -0.1
Week of 4/30100.0*League One100.0*Average seed
Hartlepool 0 Portsmouth 2 +0.9
+0.4
York 1 Bristol Rovers 4 -0.6
-0.0
Carlisle 0 Oxford Utd 2 -0.6
Wycombe 0 Accrington 1 -0.3
Cambridge 2 Plymouth 2 +0.2
+0.1
Stevenage 0 Wimbledon 0 +0.0
Week of 5/7100.0*League One100.0*Average seed
Portsmouth 1 Northampton 2 -0.5
Plymouth 5 Hartlepool 0 -0.1
Points
Chance Will Win Championship