Results of power function fitting. Gray points represent time series of each periodic component excluding the data points with flux densities less than 3σ, and black lines show the best fitting of periodic power function. It should be noted that the entire data were used for the fitting, but for the 0.66 km s⁻¹ feature (left-hand panel) we show here only the data from MJD = 59290 to MJD = 59530.