          N     Msng  Mean      Std Dev    Min       25%       Mdn     </span></span>
<span><span class="co">## seqnbr:     654     0   327.5     188.9     1.000     164.2     327.5  </span></span>
<span><span class="co">## subjid:     654     0   37170     23691     201.0     15811     36071  </span></span>
<span><span class="co">##    age:     654     0   9.931     2.954     3.000     8.000     10.00  </span></span>
<span><span class="co">##    fev:     654     0   2.637     0.8671    0.7910    1.981     