Düsseldorf-Eller Süd station
It is served by Rhine-Ruhr S-Bahn lines S 6 every 20 minutes and by a few services of S 68 in the peak hour . 
<triplet> Rhine-Ruhr S-Bahn <subj> S 6 <obj> has part <subj> S 68 <obj> has part <triplet> S 6 <subj> Rhine-Ruhr S-Bahn <obj> part of <triplet> S 68 <subj> Rhine-Ruhr S-Bahn <obj> part of