How are these numbers calculated?

Big Games

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

Week of 4/7100.0*Relegated100.0*Average seed
Mickleover 1 Stocksbridge 3 -29.3
+1.0
Stocksbridge 1 Chester 2 +6.8
-0.3
Whitby Town 2 Stafford 1 +4.6
-0.2
Chasetown 1 Hednesford Town 2 -3.5
+0.1
FC United 1 Buxton 2 +3.5
-0.2
North Ferriby 1 Whitby Town 0 -3.3
+0.1
Chorley 3 Chasetown 2 -2.1
+0.1
Buxton 2 Matlock Town 1 +1.7
-0.1
Frickley 2 Worksop Town 1 +1.2
-0.1
Nantwich Town 0 Frickley 0 -0.3
Buxton 3 Stafford 1 +0.2
-0.1
Week of 4/14100.0*Relegated100.0*Average seed
Stocksbridge 1 Nantwich Town 5 +9.6
-0.4
Whitby Town 3 Burscough 3 -2.0
+0.1
Mickleover 1 Chester 3 -1.9
+0.0
Bradford PA 3 Frickley 0 -1.7
+0.0
Chasetown 2 North Ferriby 2 -1.7
+0.0
Rushall Olympic 2 Frickley 2 -1.3
+0.0
Worksop Town 1 Stocksbridge 1 -0.4
-0.2
Week of 4/21100.0*Relegated100.0*Average seed
Frickley 4 Stafford 3 +0.9
Stocksbridge 1 Kendal Town 3 +0.7
-0.5
Burscough 4 Chasetown 4 No
+0.2
Buxton 0 Whitby Town 1 -0.3
Points
Chance Will Win Championship