ode>'center'</code>) day of the rolling n-day group of observations. 
Default <code>'right'</code>.</p></dd>


<dt>use_max</dt>
<dd><p>Logical value to indicate using maximums rather than the minimums for analysis. Default <code>FALSE</code>.</p></dd>


<dt>use_log</dt>
<dd><p>Logical value to indicate log-scale transforming of flow data before analysis. Default <code>FALSE</code>.</p></dd>


<dt>prob_plot_position</dt>
<dd><p>Character string indicating the plotting positions used in the frequency plots, o