How are these numbers calculated?

Big Games

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

Week of 4/20100.0*Promoted100.0*Relegated100.0*Average seed
Montrose 2 Airdrieonians 1 No
+0.1
-0.5
Dumbarton 3 East Fife 0 +0.7
+0.1
Stenhousemuir 0 Forfar Athletic 3 -0.0
Stranraer 3 Brechin 0 -0.0
-0.1
Week of 4/27100.0*Promoted100.0*Relegated100.0*Average seed
Airdrieonians 3 Arbroath 0 +0.7
Dumbarton 2 Stranraer 1 -0.1
Stenhousemuir 1 East Fife 1 -0.0
Week of 5/4100.0*Promoted100.0*Relegated100.0*Average seed
Stranraer 1 Airdrieonians 4 +0.6
East Fife 2 Forfar Athletic 3 +0.3
Arbroath 1 Dumbarton 1 -0.0
Points
Chance Will Win Championship