Free spectra for DMv (referred to 1.4GHz) and RN for PSR J0030+0451 (top) and PSR J1022+1001 (bottom). Each violin represents the posterior distribution of the RMS amplitude in a given Fourier bin. The blue violins correspond to the full DR2low dataset; the green and orange violins show the results obtained after applying solar angle cuts of 45° and 75°, respectively. The vertical dashed lines indicate the harmonics of the 1yr⁻¹ frequency, which is representative of the SW effect. The number of Fourier bins displayed matches that of the preferred noise model listed in Table 1.