Differences of the photospheric and CI chondritic logarithmic abundances as a function of 50% condensation temperature at a pressure of 10⁻⁴ bar for a solar composition gas (Wood et al. 2019), showing a tendency for the refractory elements to be enhanced in the Sun compared with the meteorites. Only elements with a combined uncertainty of < 0.1 dex in the abundance difference are shown in the figure. It should be noted that C, N, and O (condensation temperature < 200 K) fall outside the plot with the meteoritic abundances depleted compared to the Sun, as is also the case for the noble gases. The solid line is a weighted least-squares fit to the data with a slope of (6.9 ± 2.7) ⋅ 10⁻⁵ dex K⁻¹.