ss="va">flights</span> <span class="op"><a href="https://magrittr.tidyverse.org/reference/pipe.html" class="external-link">%&gt;%</a></span> </span>
<span>  <span class="fu"><a href="../reference/group_dt.html">group_dt</a></span><span class="op">(</span>by <span class="op">=</span> <span class="va">month</span>,<span class="fu"><a href="https://rdrr.io/r/utils/head.html" class="external-link">head</a></span><span class="op">(</span><span class="fl">2</span><span class="op">)</span><span class="op">)</span>