code>section</code>.  If <code>p="levitus"</code>, then pressures will be set to be those
of the Levitus atlas, given by <code><a href="standardDepths.html">standardDepths()</a></code>.
If <code>p</code> is a single numerical value,
it is taken as the number of subdivisions to use in a call to <code><a href="https://rdrr.io/r/base/seq.html" class="external-link">seq()</a></code>
that has range from 0 to the maximum pressure in <code>section</code>.  Finally, if a
vector numerical values is provided, perhaps