How are these numbers calculated?

Big Games

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

Week of 4/13100.0*Level 9100.0*Average seed
Slimbridge 1 Mangotsfield 8 +27.2
-0.4
Paulton Rovers 0 Thatcham Town 1 -4.8
+0.1
Barnstaple Town 0 Cinderford Town 2 +0.0
Week of 4/20100.0*Level 9100.0*Average seed
Paulton Rovers 1 Bideford 2 -4.4
Bideford 2 Slimbridge 0 +4.2
-0.1
Slimbridge 1 Cinderford Town 3 +3.2
-0.0
Mangotsfield 4 Paulton Rovers 1 -2.0
Barnstaple Town 2 Street 4 +0.0
Week of 4/27100.0*Level 9100.0*Average seed
Thatcham Town 0 Slimbridge 1 -6.5
+0.1
Bristol Manor F 1 Paulton Rovers 2 Yes
Points
Chance Will Make Playoffs