remove this grouping. Leave blank if using <code>station_number</code> 
argument.</p></dd>


<dt>station_number</dt>
<dd><p>Character string vector of seven digit Water Survey of Canada station numbers (e.g. <code>"08NM116"</code>) of
which to extract daily streamflow data from a HYDAT database. Requires <code>tidyhydat</code> package and a HYDAT database.
Leave blank if using <code>data</code> argument.</p></dd>


<dt>percentiles</dt>
<dd><p>Numeric vector of percentiles to calculate. Set to <code>NA</code