I know this is pedantic, but based on the order of events in the article wouldn’t 543 be the worst year to be alive? By then you would have experienced the cumulative horror of starving and freezing through two volcanic events and watching a third to half of your friends and family die of plague. 536 would have a been frightening and confusing as the volcanic fog began to roll in, but you couldn’t know the terror of what was to come.