109 -0.27        1       NA    0.082     2.00</span>
<span class="co">#&gt; 3   1        1      511       56 -0.03        1       NA    0.082     2.00</span>
<span class="co">#&gt; 4   0        1      449       83 -0.38        2    -0.11    0.082     3.25</span>
<span class="co">#&gt; 5   0        1      425       53 -0.03        2    -0.11    0.082     3.25</span>
<span class="co">#&gt; 6   1        1      450       65  0.76        2    -0.11    0.082     3.25</span>
<span class="co">#&gt;   classid school