How are these numbers calculated?

Big Games

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

Week of 10/7100.0*Average seed
Gibraltar 0 Estonia 6 +3.2
Cyprus 1 Greece 2 +0.5
Bosnia 3 Belgium 4 +0.2
Sweden 8 Luxembourg 0 +0.1
Belarus 1 Netherlands 3 +0.1
Andorra 0 Portugal 2 +0.1
Week of 10/8100.0*Average seed
Estonia 1 Bosnia 2 -3.1
Belgium 4 Cyprus 0 +0.9
Moldova 0 Austria 1 -0.2
Germany 5 Azerbaijan 1 +0.2
Norway 1 Northern Ireland 0 -0.2
Israel 0 Spain 1 +0.2
Macedonia 4 Liechtenstein 0 -0.1
Czech Republic 5 San Marino 0 -0.1
Albania 0 Italy 1 +0.1
Denmark 1 Romania 1 +0.1
Slovenia 2 Scotland 2 -0.0
Points
Chance Will Make Playoffs