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
Dumbarton 3 East Fife 0 +0.1
-3.0
+0.5
Montrose 2 Airdrieonians 1 No
+0.1
Stranraer 3 Brechin 0 -1.3
-0.1
Stenhousemuir 0 Forfar Athletic 3 -1.2
+0.0
Week of 4/27100.0*Promoted100.0*Relegated100.0*Average seed
Dumbarton 2 Stranraer 1 +0.8
Airdrieonians 3 Arbroath 0 -0.3
Stenhousemuir 1 East Fife 1 -0.0
Week of 5/4100.0*Promoted100.0*Relegated100.0*Average seed
Arbroath 1 Dumbarton 1 +0.2
East Fife 2 Forfar Athletic 3 +0.2
Stranraer 1 Airdrieonians 4 -0.2
Points
Chance Will Win Championship