ify</span><span class="op">(</span><span class="va">ts</span>, simplify_to <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"CH_1"</span>, <span class="st">"NEA_1"</span>, <span class="st">"NEA_2"</span>, <span class="st">"AFR_1"</span>,</span></span>
<span class="r-in"><span>                                            <span class="st">"AFR_2"</span>, <span class="st">"EUR_1"</span>, <span class="st