How are these numbers calculated?

Big Games

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

Week of 7/1100.0*Super 8100.0*League 1 Shield100.0*Average seed
Toronto 64 York 22 -1.7
+1.7
-0.6
Workington 46 London 16 -0.9
+0.9
-0.1
Whitehaven 28 Keighley 22 +0.8
-0.8
+0.1
Doncaster 34 Oxford 16 -0.7
+0.7
-0.2
Barrow 36 All Golds 6 +0.6
-0.6
+0.0
Hunslet 56 Coventry 24 -0.6
+0.6
Oxford 20 North Wales 52 -0.5
+0.5
Week of 7/8100.0*Super 8100.0*League 1 Shield100.0*Average seed
London 30 Hunslet 16 +1.5
-1.5
+0.1
Toronto 62 All Golds 10 +1.1
-1.1
North Wales 12 Whitehaven 12 Yes
No
+0.1
Workington 30 Keighley 30 Yes
No
+0.1
York 68 Hemel 6 Yes
No
+0.6
South Wales 12 Doncaster 70 -0.1
+0.1
-0.2
Newcastle 68 Coventry 20 -0.1
+0.1
-0.2
Week of 7/15100.0*Super 8100.0*League 1 Shield100.0*Average seed
York 34 Workington 0 +0.5
Hunslet 26 Newcastle 25 +0.3
All Golds 4 Doncaster 42 -0.3
Games Above .500
Chance Will Win Championship