/span></span></span>
<span class="r-in"><span>    boot_est <span class="op">=</span> <span class="va">booties</span><span class="op">$</span><span class="va">M</span>,</span></span>
<span class="r-in"><span>    boot_se <span class="op">=</span> <span class="va">booties</span><span class="op">$</span><span class="va">SE</span>,</span></span>
<span class="r-in"><span>    est <span class="op">=</span> <span class="va">est</span>,</span></span>
<span class="r-in"><span>    se <span class="op">=</span> <span cla