nchus nerka, Oncorhyn...[truncated]</span></a></code></pre></div>
<p>We subset the retrieved data to the 20 most tested chemicals and plot the result.</p>
<div class="sourceCode" id="cb9"><pre class="r"><span class="fu"><a href="https://rdrr.io/r/base/library.html">require</a></span>(<span class="no">data.table</span>)
<span class="no">dat</span> <span class="kw">=</span> <span class="fu"><a href="https://Rdatatable.gitlab.io/data.table/reference/merge.html">merge</a></span>(<span class="no">l2</span>$<span