cmc_alphas</span><span class="op">)</span></span>
<span><span class="va">log_hr_mean</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/colSums.html" class="external-link">rowMeans</a></span><span class="op">(</span><span class="va">log_hr</span><span class="op">)</span></span>
<span><span class="va">log_hr_low</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/apply.html" class="external-link">apply</a></span><span class="op">(</span><sp