Hα and Hβ line and their line-segment fluxes (blue wing, line core, red wing) vs. the continuum flux at 6300 and 5100, respectively. The continuum flux is plotted in units of 10^-16 erg cm^-2 s^-1 A^-1, the line-segment fluxes in units of 10^-14 erg cm^-2 s^-1. The correlation coefficient and the corresponding p-value are given in the upper left corner. The CA-data are denoted with squares.