How are these numbers calculated?

Big Games

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

Week of 8/12100.0*Top 4100.0*Average seed
Fremantle 70 Adelaide 142 +6.0
+0.3
St Kilda 76 Sydney 146 -2.7
-0.1
GWS 96 West Coast 97 +2.5
+0.2
Hawthorn 96 North Melbourne 57 -1.2
-0.1
Richmond 78 Geelong 82 -1.1
-0.1
Bulldogs 95 Collingwood 92 -0.9
-0.0
Week of 8/20100.0*Top 4100.0*Average seed
Port Adelaide 94 Adelaide 109 +19.1
+1.3
North Melbourne 76 Sydney 85 -1.7
-0.3
Week of 8/26100.0*Top 4100.0*Average seed
North Melbourne 63 GWS 100 -20.1
-0.3
Adelaide 71 West Coast 100 -14.9
-1.8
Geelong 155 Melbourne 44 -5.8
-0.3
Games Above .500
Chance Will Make Playoffs