Behaviour of line profiles belonging to different elements in the spectra of HD 92207 on twelve different nights. Upper panel: a few examples of line profile variability caused by non-radial pulsations for different elements. Note the small differences in the pulsation behaviour of the line profiles between Hβ and He, Si, and Fe lines. Lower panel: changes in the line intensities for different elements in the spectra corrected for the pulsational radial velocity shifts.