n><span class="op">(</span><span class="va">swissframe</span><span class="op">)</span></span></code></pre></div>
    </div>

    <div id="format">
    <h2>Format</h2>
    <p>The "swissstrata" dataframe contains a row per stratum with the following variables:</p><dl><dt>STRATO</dt>
<dd><p>Identifier of the stratum (character)</p></dd>

    <dt>N</dt>
<dd><p>Number of population units in the stratum (numeric)</p></dd>

    <dt>X1</dt>
<dd><p>Classes of total population in the municipality (factor with 18 valu