Daily records of the one-hour SNR data from 2015 June 19 to June 22. An enlarged view of part of the figure is also shown. Peaks with an open circle show the side lobe from strong sources. On June 21, 17:24 UT, we found a significant peak at a position near V404 Cygni, although on June 20, 17:28 UT, we could not observe any noticeable signal in the vicinity. A nearby radio source, QSO J2025+337, was chosen as a calibration star, whose flux density is 1268 mJy at 1.4 GHz (Condon et al. 1998). (Color online)