Dynamic spectra for Stokes V for January (top) and February (bottom) observations, taken from visibility plane. The error bars in the light curves and frequency spectrum represent the standard deviation, computed by considering the imaginary component of the amplitude. The top and bottom axes of the top panel represent the primary and secondary phases (Φ₁ and Φ₂), respectively, calculated using the primary and secondary periods reported in Bouma et al. (2024). We fixed the reference phase Φ = 0 at the beginning of the first target scan in the January observation. The vertical blue lines indicate the start (Φ = 0) of new primary (dashed) and secondary (solid) cycles, respectively.