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*Chance wins title100.0*League One100.0*Average seed
Cheltenham Town 1 Gillingham 0 +1.8
-0.5
Rochdale 2 Port Vale 2 -1.0
+0.6
Burton Albion 1 Plymouth Argyle 0 -1.2
-0.1
Northampton 0 York 2 +0.9
+0.1
Rotherham 2 Fleetwood Town 1 -0.8
Chesterfield 2 Bradford City 2 +0.1
Week of 4/20100.0*Chance wins title100.0*League One100.0*Average seed
Gillingham 2 AFC Wimbledon 2 No
Port Vale 2 Northampton 2 No
+1.3
Plymouth Argyle 0 Rotherham 1 -1.8
-0.1
Bradford City 1 Burton Albion 0 +1.7
+0.1
Exeter City 0 Cheltenham Town 1 -1.1
Week of 4/27100.0*Chance wins title100.0*League One100.0*Average seed
Rotherham 2 Aldershot Town 0 -0.4
Cheltenham Town 0 Bradford City 0 Yes
Wycombe 1 Port Vale 1 Yes
-0.1
Points
Chance Will Win Championship