The 2–4 GHz data for MR Ser on 2025 April 5. The top panel shows the full-band SED, the second panel shows the full-band light curve, the third panel shows the Stokes I dynamic SED, and the bottom panel shows the Stokes V dynamic SED. One flare was detected in this observation. It is difficult to see any clear signal in the Stokes I data, but the shape is somewhat clearer in Stokes V.