Boxplots showing the distribution of abundance ratios for 16 stars with T_eff > 5400 K and an upper age limit of 7 Gyr, in a narrow metallicity range around that of the Sun (± 0.03 dex). Because of large NLTE effects for Ba at higher temperatures, the Ba box has been restricted to stars with T_eff < 6000 K as well. In the boxplots the central horizontal line represents the median value. The lower and upper quartiles are represented by the outer edges of the boxes, i.e. the box encloses 50% of the sample. The whiskers extend to the farthest data point that lies within 1.5 times the inter-quartile distance. Those stars that do not fall within the reach of the whiskers are regarded as outliers and are marked by dots.