Observed and predicted abundance ratios of [X/Eu] vs [X/H] for the first- and second-peak neutron-capture elements (Sr, Y, Zr, Ba, La, Ce). Grey symbols show observational data with the same symbol types as in previous figures, while coloured lines represent model predictions using different scaling relations: the solar r-/s-process pattern (solid green/grey), HD 122563 (dotted red), HD 88609 (dashed yellow), HD 222925 (dash-dotted blue), and CS 22892-052 (dash-dotted grey). Symbols for the observational data are the same as in Figure 3.