dt">color =</span> <span class="st">"grey50"</span>) +<span class="st"> </span><span class="kw">geom_line</span>(<span class="kw">aes</span>(angle *<span class="st"> </span><span class="dv">180</span>/pi, R)) +<span class="st"> </span><span class="kw">scale_y_continuous</span>(<span class="st">"Reflectivity"</span>, 
    <span class="dt">expand =</span> <span class="kw">c</span>(<span class="dv">0</span>, <span class="dv">0</span>), <span class="dt">limits =</span> <span class="kw">c</span>(<span class="dv"