Dynamic spectrum of B1, the brightest S-band burst detected during our observation. The data are plotted with a time and frequency resolution of 2 μs and 0.5 MHz, respectively. The S/N maximizing DM (87.77 pc cm⁻³) was used for dedispersion. Panel (a) shows the frequency-averaged, dedispersed burst profile. The teal shaded region shows the interval that was used for computing the on-pulse spectrum in panel (c). The dedispersed dynamic spectrum is shown in panel (b), and the color bar indicates the relative intensity of the features.