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 +12.8
-0.6
Northampton 0 York 2 +7.9
-0.3
Burton Albion 1 Plymouth Argyle 0 -0.8
+0.1
AFC Wimbledon 2 Exeter City 2 -0.3
+0.0
Dag & Red 0 Oxford United 1 -0.2
+0.1
Week of 4/20100.0*Conference Nat’l100.0*Average seed
Aldershot Town 1 Dag & Red 0 -7.5
+0.3
York 2 Southend 1 +1.8
-0.1
Barnet 1 Wycombe 0 +1.8
-0.1
Morecambe 0 Torquay United 2 +1.1
Gillingham 2 AFC Wimbledon 2 +1.0
-0.0
Bristol Rovers 0 Accrington 1 +0.2
Week of 4/27100.0*Conference Nat’l100.0*Average seed
Rotherham 2 Aldershot Town 0 Yes
-0.1
AFC Wimbledon 2 Fleetwood Town 1 +2.6
-0.1
Northampton 2 Barnet 0 -1.8
Dag & Red 0 York 1 -1.6
Points
Chance Will Win Championship