MS B-type stars showing coherent p mode pulsations. Light curves (left panels) and their corresponding LS-periodogram (right panels) for HD 44743 (β CMa), HD 46328 (ζ¹ CMa), HD 50707 (15 CMa), HD 61068 (PT Pup), and HD 16582 (δ Cet). No significant variability is seen beyond 15 d⁻¹. The amplitude axis in the LS-periodogram is cut-off at the second most significant peak to highlight the low amplitude frequencies. For HD 61068 we use the third most significant peak. We mark significant frequencies with blue markers. Orange markers indicate possible combinations or harmonics of the dominant frequency (in terms of amplitude) and second dominant frequency. The grey band indicates the approximate frequency range where the effects of rotation may be expected if the radius corresponding to the spectral type and v sin i are available for that particular star (cf. Sect. 2.3).