Six samples were taken in the vineyards of the winery “Weingut
Maximin Grünhaus Schlosskellerei C. von Schubert” in the Ruwer
valley in the Mosel vine growing region of Germany. All other samples
were taken in vineyards of the village of Ochsenbach, located
in the Kirbach valley, which is part of the wine growing region
Württemberg, Germany. Samples were taken from 10 different
grape varieties.