lass="dv">2</span>) +
<span class="st">  </span><span class="kw">annotate</span>(<span class="st">"segment"</span>, <span class="dt">x=</span><span class="dv">180</span>, <span class="dt">xend=</span><span class="dv">180</span>, <span class="dt">y=</span><span class="dv">0</span>, <span class="dt">yend=</span><span class="dv">2</span>, <span class="dt">colour=</span><span class="st">"orange"</span>, <span class="dt">size=</span><span class="dv">2</span>) +
<span class="st">  </span><span class="kw">scale_fi