the beginning of a time series, or an event that is still present
at the end of a time series, will report the rate of onset or the rate of
decline as <code>NA</code>, as it is impossible to know what the temperature half a
day before or after the start or end of the event is.</p></li>
<li><p>For the purposes of event detection, any missing temperature values not
interpolated over (through optional <code>maxPadLength</code> in <code><a href="ts2clm3.html">ts2clm3</a></code>)
will be set equal to the seasona