n mind that a deep-water CTD profile might take 6 hours, corresponding to
ship-time costs exceeding a week of salary.</p></li>
<li><p>If <code>method="range"</code> then data are selected based on the value of the column named
<code>parameters$item</code>.  This may be by range or by critical value.  By range: select values
between <code>parameters$from</code> (the lower limit) and <code>parameters$to</code> (the upper limit) By
critical value: select if the named column exceeds the value.  For example, <co