Relationship between various shape indicators and brightness (y-axis) vs. RV for HD 67458 shown as individual data points for CCFs binned in 20 min time intervals, where errorbar color, and lines connecting data in time, indicates the night of the observation (nl,n2,nЗ). Each point is color-coded by the average S/N of the 10th echelle order. The Spearman’s correlation coefficients is indicated by ρ_s for each night.