LSE</code>.</p></dd>


<dt>allowed_missing</dt>
<dd><p>Numeric value between 0 and 100 indicating the <strong>percentage</strong> of missing dates allowed to be
included to calculate a statistic (0 to 100 percent). If <code>'ignore_missing = FALSE'</code> then it defaults to <code>0</code> (zero missing dates allowed),
if <code>'ignore_missing = TRUE'</code> then it defaults to <code>100</code> (any missing dates allowed); consistent with 
<code>ignore_missing</code> usage. Supersedes <code>ignore_missing</