Relative densities for pairs of low FIP elements. The columns correspond to the density ratios Mg/Fe, Si/Fe, and Mg/Si. As in Fig. 1, each panel shows a 2D histogram of 12 min observations for one year normalized for each O charge state ratio bin. The insets again specify the number of data points contained in each panel. Gray shading indicates bins with significantly different mean densities and the cross-hatching marks bins where the standard deviation of the two distributions are significantly different. The dashed horizontal line marks an abundance ratio of one.