_ID sp               dbh growth american_beech sugar_maple
#&gt;      <span style='color: #949494; font-style: italic;'>&lt;dbl&gt;</span> <span style='color: #949494; font-style: italic;'>&lt;fct&gt;</span>          <span style='color: #949494; font-style: italic;'>&lt;dbl&gt;</span>  <span style='color: #949494; font-style: italic;'>&lt;dbl&gt;</span>          <span style='color: #949494; font-style: italic;'>&lt;dbl&gt;</span>       <span style='color: #949494; font-style: italic;'>&lt;dbl&gt;</span>
#&g