an><span class="op">)</span>,
         xaxis <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/list.html" class="external-link">list</a></span><span class="op">(</span>title <span class="op">=</span> <span class="st">"Source: San Francisco Department of Public Health"</span><span class="op">)</span>,
         hovermode <span class="op">=</span> <span class="st">"compare"</span><span class="op">)</span></code></pre></div>
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