pan>  fn <span class="op">=</span> <span class="st">"fn_lin_pl_lin"</span>,</span>
<span>  params <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span>t1 <span class="op">=</span> <span class="fl">38.7</span>, t2 <span class="op">=</span> <span class="fl">62</span>, t3 <span class="op">=</span> <span class="fl">90</span>, k <span class="op">=</span> <span class="fl">0.32</span>, beta <span class="op">=</span> <span clas