Error incurred in the Fe abundance as a function of equivalent line width corresponding to the difference between the high and very-high resolution models D and C, respectively. The horizontal lines show the 0.01 dex mark, to guide the eye. The ranges of y-axes are chosen deliberately to illustrate the typical error in abundances caused by the error of atomic data that, for diagnostic solar lines, ranges from 0.03 to 0.1 dex (Magg et al. 2022).