Distribution of lines with significant correlations (|ρ| ≥ 0.4, |ρ| > |ρ_BERV|, and p-value ≤0.01%) with activity in at least one parameter as a function of line profile parameters. The black histogram includes all the analysed lines, blue represents the lines with significant correlations between at least one parameter and one activity index, and red shows the lines with significant correlations common to both stars. The purple line indicates the fraction of lines with correlations in at least one profile parameter and at least one activity indicator to the full line list; the errorbars are given by Poisson statistics.