[ExI] SO2 and math

[Keith Henson]

11 million people.  If 1% die each year, then we are talking about
110,000 people per year or about 300 per day.  The death toll from the
coronavirus has hit about 1/3 of this in the last day, but for most of
the time, it was under 1/10th of the number of people who would be
expected to die anyway.

I would expect the extra SO2 from cremating people who died of
coronavirus to be impossible to resolve since there are so many
sources of SO2 in China.

Keith