How are these numbers calculated?

Big Games

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

Week of 5/23100.0*Average seed
Valenciennes 2 PSG 1 -0.3
Nancy 1 Marseille 2 +0.2
Rennes 3 Lorient 1 +0.1
Bordeaux 1 Monaco 0 +0.1
Le Mans UC72 1 Grenoble 1 +0.0
Week of 5/30100.0*Average seed
Grenoble 0 Sochaux 1 -1.2
Saint-Étienne 4 Valenciennes 0 +0.3
Lorient 1 Le Mans UC72 1 +0.2
Lille 3 Nancy 2 +0.1
PSG 0 Monaco 0 -0.1
Points
Chance Will Win Championship