Distribution of periodic stars with FAP < 5% in the P_rot−P_{cyc, var} plane; the gray area indicates the limits of our detection reliability. The different black symbols represent cycle period measurements from other authors: circles: Ferreira Lopes et al. (2015), upside down triangle: Egeland et al. (2015), normal triangle: Salabert et al. (2016), square: Moutou et al. (2016), star: Flores et al. (2016), and diamond: Boro Saikia et al. (2016). The solid black lines show the active (A), inactive (I), and short-cycle (S) sequences as defined by Ferreira Lopes et al. (2015). The numbers above the color bins denote the total number of stars in each column.