2D histogram (heatmap) of burst waiting times versus band differences. Waiting times are shown on a logarithmic scale, while band differences indicate jumps between observing bands. Positive values correspond to upward shifts in frequency, while negative values correspond to downward shifts. The long waiting time cluster (∼1–100 s) reflects a Poissonian process with symmetric frequency drifts, while short waiting times (≲0.1 s) show asymmetric band differences dominated by downward jumps. The vertical side panel shows time consolidated waiting-time histogram for bursts shifting towards positive (negative) frequency directions. The blue histogram corresponds to the distribution for the wait times described by a Poissonian process while the orange plot shows statistics in the short wait time cluster of bursts. The Poissonian errors on each waiting-time histogram is depicted by the scatter error bars.