East Germany

Mid Germany

• Bielefeld (2)
• Göttingen (1)
• Herford (3)

Northeast Germany

• Berlin center (1)
• Berlin north (3)
• Eberswalde (1)
• Potsdam/Brandenburg (1)

Northern Germany

• Oldenburg / Emden (1)
• Südheide (1)

Rhein-Main Area

• Arnsberg/Hamm (5)
• Bonn (2)
• Cologne (2)
• Cologne/Leverkusen (2)

Ruhr Area

• Dortmund (3)
• Essen (2)
• Münster (4)
• Oberhausen (1)

Saarland

South East Germany

• Nuremberg (1)

South Germany

South West Germany

• Göppingen (1)
• Konstanz (1)
• Tübingen (1)