Figure 4
UpSet plot of the (-) ESI FT-ICR-MS data of the green tea samples. The plot shows for each site: the total number of unique total formulae (on the left); the average + standard deviation of formulae assigned (inside the horizontal bar). The vertical bars indicate the number of common assigned formulae for individual intersections defined by black circles and ordered in the descending population. Intersections I1–3 covered 46% of the assigned formulae, while the I4–6 and I7–9 intersection cumulatively extended the coverage to 77% and 88%, respectively.
