How are these numbers calculated?

Big Games

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

Week of 5/6100.0*Average seed
Köln 4 Werder Bremen 3 +1.2
Frankfurt 0 Wolfsburg 2 +0.2
Mönchengladbach 1 Augsburg 1 +0.1
Hertha 1 Leipzig 4 +0.1
Freiburg 2 Schalke 04 0 -0.0
Week of 5/13100.0*Average seed
Bayer Leverkusen 2 Köln 2 -0.3
Darmstadt 98 0 Hertha 2 -0.2
Freiburg 1 Ingolstadt 1 +0.1
Werder Bremen 3 Hoffenheim 5 +0.1
Wolfsburg 1 Mönchengladbach 1 +0.1
Schalke 04 1 Hamburg 1 +0.1
Week of 5/20100.0*Average seed
Köln 2 Mainz 05 0 +1.0
Hertha 2 Bayer Leverkusen 6 +0.3
Mönchengladbach 2 Darmstadt 98 2 +0.2
Borussia Dortmund 4 Werder Bremen 3 +0.1
Bayern München 4 Freiburg 1 +0.0
Points
Chance Will Win Championship