How are these numbers calculated?

Big Games

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

Week of 5/5100.0*Average seed
Lyon 3 Nantes 2 +0.1
Guingamp 4 Dijon 0 -0.1
Saint-Étienne 2 Bordeaux 2 -0.0
Week of 5/13100.0*Average seed
Saint-Étienne 0 PSG 5 -0.1
Nantes 4 Guingamp 1 -0.0
Week of 5/17100.0*Average seed
Nancy 3 Saint-Étienne 1 -0.9
Lille 3 Nantes 0 +0.4
Monaco 2 Saint-Étienne 0 -0.2
Rennes 2 Monaco 3 +0.1
Points
Chance Will Win Championship