span class="co">#  water level</span></span>
<span><span class="co">#  barometric pressure</span></span>
<span><span class="co">#  synthetic earthtide</span></span>
<span><span class="fu"><a href="https://rdrr.io/r/utils/data.html" class="external-link">data</a></span><span class="op">(</span><span class="va">kennel_2020</span><span class="op">)</span> </span>
<span></span>
<span><span class="va">form</span>     <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/formula.html" cl