 href="https://rdrr.io/r/base/nrow.html" class="external-link">nrow</a></span><span class="op">(</span><span class="va">etas_UK_2000</span><span class="op">)</span><span class="op">)</span><span class="op">)</span> <span class="op">+</span></span>
<span>  <span class="fu">scale_colour_manual</span><span class="op">(</span>values <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/rep.html" class="external-link">rep</a></span><span class="op">(</span><span class="st">"gray20"</span>, <