pan id="cb16-12"><a href="#cb16-12" aria-hidden="true"></a><span class="co"># 5: 2014     1   1         2         1      AA    JFK  LAX      350     2475   13 424.2857</span></span>
<span id="cb16-13"><a href="#cb16-13" aria-hidden="true"></a><span class="co"># 6: 2014     1   1         4         0      AA    EWR  LAX      339     2454   18 434.3363</span></span>
<span id="cb16-14"><a href="#cb16-14" aria-hidden="true"></a><span class="kw">head</span>(ans)</span>
<span id="cb16-15"><a href="#cb16-15" aria-h