span> <span class="st">"1 hour"</span>,
  <span class="va">...</span>
<span class="op">)</span></code></pre></div>
    </div>

    <div id="arguments">
    <h2>Arguments</h2>
    <dl><dt>date_range</dt>
<dd><p>A <code>character</code>. Indicating how to call the API. 'pfn' = Period from now,
'date_range' = a date range, "recent" = the most recent value.</p></dd>
<dt>period</dt>
<dd><p>A <code>numeric</code>. Return all values from a period from now (only if 'pfn' is used).</p></dd>
<dt>dates</dt>
<dd><p>A <