Top: Median observed S/N for each of the 86 EXPRES spectral orders. Middle: Median observed spectrum normalized by the stellar continuum and including tellurics. Bottom: Continuum-normalized model templates used in this study. We show templates calculated for Fe I (detected in our study with a 5.1σ significance) along with Fe II and Cr I (not detected). Red shaded regions indicate orders that were masked due to heavy telluric contamination.