- Only part of the event data are used in order to have a more reasonable estimation of burst durations. Event data is only available from T-60.4 s to T+302.6 s. (Also, there are a little bit of extra event data of ~ 10 s at ~ T-500 s and T+900 s, thus need to only use the event data from T-500 s to T+500 s in order to find the burst durations.)