a></span>(<span class="dv">1</span><span class="op">:</span><span class="dv">24</span>) <span class="op">%&gt;%</span><span class="st"> </span></a>
<a class="sourceLine" id="cb42-5" data-line-number="5"><span class="st">  </span><span class="kw"><a href="https://dplyr.tidyverse.org/reference/mutate.html">mutate</a></span>(<span class="dt">h_center =</span> <span class="kw"><a href="../reference/center_interval.html">center_interval</a></span>(h)) <span class="op">%&gt;%</span><span class="st"> </span></a>
<