log(g f) determinations for the λ5292.6 Fe I line deemed suitable for quality assessment and deemed to be robust against adopted analysis method. Observed line profiles are shown in black dots, line profiles calculated using the log(g f)_input values are shown in dashed grey, line profiles calculated using the values are shown in green, line profiles calculated using the values are shown in blue, and errors are shown as green and blue shaded areas, respectively. Vertical blue and dashed grey lines denote the and λ_input values, respectively. This line also shows a measurable Δλ correction of ∼0.02 Å to the input wavelength.