Temporal evolution of the 67 QSEBs and UV brightening pairs. The events are shown in order of increasing duration. The combined duration of each event pair is given in seconds to the right of each bar. The duration of each QSEB and UV brightening is normalized to a common bar length. For each case, the lighter region of the bar denotes the time when the QSEB occurs, and the region marked with diagonal lines denotes the time when the UV brightening occurs. The darker part of the bar is the time when the QSEB and UV brightening occur together. The time of peak intensity of the QSEB is marked with a green dot, and the time of peak intensity of the UV brightening is marked with a red dot.