How are these numbers calculated?

Big Games

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

Week of 4/14100.0*Relegated100.0*Average seed
Airdrieonians 2 Albion Rovers 0 -12.9
+0.2
Forfar Athletic 0 Alloa Athletic 1 -0.2
Week of 4/22None
Week of 4/28100.0*Relegated100.0*Average seed
Queens Park 3 Arbroath 0 -37.3
+0.5
Ayr Utd 2 Albion Rovers 0 -5.2
+0.1
Points
Chance Will Win Championship