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
Northampton 0 York 2 +6.8
-0.3
Wycombe 2 Aldershot Town 1 -2.3
+0.1
Burton Albion 1 Plymouth Argyle 0 -0.6
+0.1
AFC Wimbledon 2 Exeter City 2 -0.2
+0.0
Dag & Red 0 Oxford United 1 -0.2
+0.1
Week of 4/20100.0*Conference Nat’l100.0*Average seed
Barnet 1 Wycombe 0 -24.7
+0.9
York 2 Southend 1 +7.3
-0.3
Morecambe 0 Torquay United 2 +3.6
-0.3
Gillingham 2 AFC Wimbledon 2 +3.4
-0.1
Aldershot Town 1 Dag & Red 0 +1.1
Bristol Rovers 0 Accrington 1 +0.8
-0.2
Plymouth Argyle 0 Rotherham 1 +0.1
Week of 4/27100.0*Conference Nat’l100.0*Average seed
AFC Wimbledon 2 Fleetwood Town 1 +32.3
-0.5
Northampton 2 Barnet 0 +17.3
-0.9
Dag & Red 0 York 1 -5.2
+0.1
Rotherham 2 Aldershot Town 0 -2.4
+0.0
Rochdale 1 Plymouth Argyle 0 -0.5
+0.1
Torquay United 3 Bristol Rovers 3 +0.1
+0.1
Accrington 0 Oxford United 3 +0.1
Points
Chance Will Win Championship