Median(pEW(Paβ)) shown in relation to median(pEW(Hα)) with effective temperature of the stars colour-coded as shown in the legend. Left: stars with high effective temperature. Right: stars with low effective temperature. For better comparison we show stars with 3600 < T_eff < 3700 K (orange circles) in both panels. The dashed vertical line marks the dividing line between active and inactive stars.