How are these numbers calculated?

Big Games

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

Week of 4/18100.0*Promoted100.0*Average seed
Brechin 3 Dunfermline 0 -1.1
+0.1
Airdrieonians 2 Ayr Utd 0 +0.9
+0.2
Peterhead 1 Forfar Athletic 0 -0.2
Week of 4/25100.0*Promoted100.0*Average seed
Peterhead 0 Airdrieonians 1 +0.6
+0.3
Stenhousemuir 2 Brechin 2 No
-0.0
Dunfermline 1 Forfar Athletic 3 +0.1
Week of 5/2None
Points
Chance Will Win Championship