n><span class="st"> </span>non_linear_II <span class="op">~</span><span class="st"> </span>year <span class="op">|</span><span class="st"> </span>.rule, <span class="dt">data =</span> plot_data, </a>
<a class="sourceLine" id="cb3-2" title="2">       <span class="dt">type =</span> <span class="st">"smooth"</span>, <span class="dt">auto.key =</span> <span class="ot">TRUE</span>, <span class="dt">layout =</span> <span class="kw"><a href="https://www.rdocumentation.org/packages/base/topics/c">c</a></span>(<span