f="pipe.html">%&gt;%</a></span></span></span>
<span class="r-in"><span>  <span class="fu"><a href="https://dplyr.tidyverse.org/reference/group_by.html" class="external-link">group_by</a></span><span class="op">(</span><span class="va">year0</span><span class="op">)</span> <span class="op"><a href="pipe.html">%&gt;%</a></span></span></span>
<span class="r-in"><span>  <span class="fu">sum_lump</span><span class="op">(</span>flow <span class="op">=</span> <span class="st">"da_pb_closed"</span>, threshold <span