ted along the X axis in the frequency plot. Inverse of 
return period. Default <code>c(.9999, .999, .99, .9, .5, .2, .1, .02, .01, .001, .0001)</code>.</p></dd>


<dt>fit_distr</dt>
<dd><p>Character string identifying the distribution to fit annual data, one of <code>'PIII'</code> (Log Pearson Type III)
or <code>'weibull'</code> (Weibull) distributions. Default <code>'PIII'</code>.</p></dd>


<dt>fit_distr_method</dt>
<dd><p>Character string identifying the method used to fit the distribution, one of <code>