How are these numbers calculated?

Big Games

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

Week of 4/30100.0*Erste Liga100.0*Average seed
Grödig 2 Rapid Wien 0 +0.3
Wolfsberger 2 Mattersburg 0 No
+0.7
Admira 2 Altach 1 +0.0
Sturm Graz 0 Ried 0 +0.0
Week of 5/8100.0*Erste Liga100.0*Average seed
Wolfsberger 1 Admira 2 -0.4
Ried 0 Austria Wien 5 +0.2
Ried 2 Grödig 0 -0.1
Austria Wien 3 Admira 1 +0.1
Mattersburg 0 Rapid Wien 2 +0.1
Rapid Wien 1 Altach 1 +0.0
Altach 1 Wolfsberger 1 -0.0
Sturm Graz 1 Mattersburg 1 +0.0
Salzburg 1 Sturm Graz 1 +0.0
Week of 5/15100.0*Erste Liga100.0*Average seed
Salzburg 1 Wolfsberger 0 -0.2
Altach 0 Ried 0 +0.1
Points
Chance Will Win Championship