an>
<span></span>
<span><span class="co">## Sequence of monthly dates between "1961-01-01" and "1961-12-31"</span></span>
<span><span class="va">t</span> <span class="op">&lt;-</span> <span class="fu"><a href="mip.html">mip</a></span><span class="op">(</span><span class="st">"1961-01-01"</span>, <span class="st">"1961-12-31"</span><span class="op">)</span></span>
<span><span class="fu">time2season</span><span class="op">(</span><span class="va">t</span><span class="op">)</span></span>
<span><span class="fu"