Dynamic spectrum of Stokes I (left) and Stokes V (right) emission for June (top) and July (bottom) observations. Each bin corresponds to an integration time of 7 minutes averaged over 40 channels (∼8 MHz), a good compromise between resolution and S/N per bin. The average rms for each bin in Stokes I is ∼2 mJy/beam, while it is ∼0.32 mJy/beam for Stokes V. The narrow white gaps mark the time spent on the phase calibrator during the observation. In each panel, the top and right subsets show the time series and the average spectra, obtained by integrating the dynamic spectrum in frequency and time, respectively.