⟨[ X/Fe ] ⟩ − T_C trends for the SWOD, SWD, and SWDP samples when all elements (volatiles and refractories) are taken into account (left) and when only refractories are considered (right). For the sake of clarity, an offset of −0.50 dex was applied between the samples. Unweighted fits are shown by continuous lines, while weighted fits are plotted in dashed lines. For guidance, the derived slopes from the unweighted fits are shown in the plots (units of 10^-5 dex/K).