How are these numbers calculated?

Big Games

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

Week of 4/26100.0*Average seed
Tranmere 1 Southend 0 +0.1
Week of 5/3100.0*Average seed
Southend 1 Port Vale 1 +0.5
Leeds 2 Gillingham 1 +0.1
Points
Chance Will Win Championship