Comparison of the classical Lomb-Scargle periodogram of the star No. 14 – 190.1 15527 before (pale colour) and after (dark colour) subtraction of the variations described by the model (Eq. (7)). It seems that a part of the variability of the star can be described by this model and found parameters (see Table 2). Unfortunately, there are some indications that the main peak may be an artefact caused by specifically distributed data.