</a></span><span class="op">(</span><span class="fl">3935</span><span class="op">)</span>
<span class="va">series1</span> <span class="op">&lt;-</span> <span class="fu"><a href="../reference/unstructured_pop.html">unstructured_pop</a></span><span class="op">(</span>start<span class="op">=</span><span class="fl">20</span>, timesteps<span class="op">=</span><span class="fl">20</span>, survPhi<span class="op">=</span><span class="fl">0.4</span>, fecundPhi<span class="op">=</span><span class="fl">0.4</span>, su