>
<span><span class="co">#&gt;                &lt;char&gt; &lt;char&gt; &lt;char&gt; &lt;char&gt;</span></span>
<span><span class="co">#&gt;     1: MCID3111142689   &lt;NA&gt; 090401 090401</span></span>
<span><span class="co">#&gt;     2: MCID3111142782   &lt;NA&gt; 260101 260101</span></span>
<span><span class="co">#&gt;     3: MCID3111142881   &lt;NA&gt; 450601 450601</span></span>
<span><span class="co">#&gt;    ---                                    </span></span>
<span><span class="co">#&gt; 76873: MC