p">(</span><span class="va">geese_data_day1</span><span class="op">$</span><span class="va">source_sds</span><span class="op">^</span><span class="fl">2</span> <span class="op">+</span> <span class="va">geese_data_day1</span><span class="op">$</span><span class="va">correction_sds</span><span class="op">^</span><span class="fl">2</span><span class="op">)</span></span>
<span><span class="va">mix</span> <span class="op">&lt;-</span> <span class="va">geese_data_day1</span><span class="op">$</span><span class="