"#cb13-2" aria-hidden="true" tabindex="-1"></a>polar <span class="ot">&lt;-</span> <span class="fu">tibble</span>(</span>
<span id="cb13-3"><a href="#cb13-3" aria-hidden="true" tabindex="-1"></a>  <span class="at">arc_start =</span> <span class="fu">runif</span>(<span class="dv">200</span>),</span>
<span id="cb13-4"><a href="#cb13-4" aria-hidden="true" tabindex="-1"></a>  <span class="at">arc_end =</span> arc_start <span class="sc">+</span> <span class="fu">runif</span>(<span class="dv">200</span>, <span cl