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*Conference Nat’l100.0*Average seed
Wycombe 2 Aldershot Town 1 +19.2
-0.9
Northampton 0 York 2 +5.6
-0.2
Burton Albion 1 Plymouth Argyle 0 -0.9
+0.1
Dag & Red 0 Oxford United 1 -0.6
+0.1
AFC Wimbledon 2 Exeter City 2 -0.2
+0.0
Week of 4/20100.0*Conference Nat’l100.0*Average seed
Aldershot Town 1 Dag & Red 0 -18.6
+0.6
Barnet 1 Wycombe 0 +3.4
-0.1
York 2 Southend 1 +3.0
-0.1
Morecambe 0 Torquay United 2 +2.4
-0.1
Bristol Rovers 0 Accrington 1 +0.4
Gillingham 2 AFC Wimbledon 2 +0.1
Week of 4/27100.0*Conference Nat’l100.0*Average seed
Rotherham 2 Aldershot Town 0 Yes
-0.4
Northampton 2 Barnet 0 -11.0
+0.2
AFC Wimbledon 2 Fleetwood Town 1 +8.8
-0.2
Dag & Red 0 York 1 -6.8
+0.1
Points
Chance Will Win Championship