Left panel: plotted against the calculated prior to the corrections to the Gaussian profiles. Right panel: as in Left panel but after corrections are applied on a line-per-line, star-by-star basis. The colour scale corresponds to the mean Ω_core (in percentage) of the line in question, recalculated using the new values. The stratification of the Ω_core is explained in Sect. 4.3.7.