How are these numbers calculated?

Big Games

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

Week of 4/28100.0*Relegated100.0*Average seed
St Johnstone 1 Partick Thistle 1 +4.2
-0.1
Motherwell 2 Dundee 1 -2.2
+0.1
Partick Thistle 1 Ross County 1 -1.3
Hamilton 2 Ross County 0 -0.7
Week of 5/5100.0*Relegated100.0*Average seed
Partick Thistle 0 Motherwell 1 +14.5
-0.3
Ross County 0 Dundee 1 -7.4
+0.1
Hamilton 1 St Johnstone 2 -4.9
+0.1
Dundee 1 Hamilton 0 +1.5
-0.0
Week of 5/12100.0*Relegated100.0*Average seed
Dundee 0 Partick Thistle 1 -15.5
+0.3
St Johnstone 1 Ross County 1 -11.7
+0.2
Motherwell 3 Hamilton 0 -3.8
+0.1
Points
Chance Will Win Championship