le calculation (as
requested by setting <code>eos="gsw"</code>), and is the value contained within
<code>ctd</code> objects (and probably most other objects created with data
acquired in the past decade or two). Since the UNESCO-style calculation is
based on IPTS-68, the temperature is converted within the present function,
using <code><a href="T68fromT90.html">T68fromT90()</a></code>.</p></dd>


<dt id="arg-pressure">pressure<a class="anchor" aria-label="anchor" href="#arg-pressure"></a></dt>
<dd><p>pressu