href="https://github.com/cran/FRegSigCom/blob/master/data/air.RData" class="external-link">
https://github.com/cran/FRegSigCom/blob/master/data/air.RData</a>.</p>
<p>Data collected hourly in 355 days (days with missing values removed)
in a significantly polluted area within an Italian city.</p>
    </div>

    <div id="ref-usage">
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu"><a href="https://rdrr.io/r/utils/data.html" class="external-link">data</a></span><span class="op