ensity function</a></li>
  <li><a href="#sampling-statement-8" id="toc-sampling-statement-8" class="nav-link" data-scroll-target="#sampling-statement-8">Sampling statement</a></li>
  <li><a href="#stan-functions-8" id="toc-stan-functions-8" class="nav-link" data-scroll-target="#stan-functions-8">Stan functions</a></li>
  </ul></li>
  <li><a href="#rayleigh-distribution" id="toc-rayleigh-distribution" class="nav-link" data-scroll-target="#rayleigh-distribution">Rayleigh distribution</a>
  <ul class="collapse