dt id="arg-ref">ref<a class="anchor" aria-label="anchor" href="#arg-ref"></a></dt>
<dd><p>A numeric that indicates which percentile the equation should be returned for. Note that the vast majority of equations only exist for the <code>75</code>th percentile (DEFAULT).</p></dd>


<dt id="arg-method">method<a class="anchor" aria-label="anchor" href="#arg-method"></a></dt>
<dd><p>A string that indicates which equation-derivation method should be used (one of <code>"RLP"</code>, <code>"EmP"</code>, or <code>"Ot