a <span class="op">=</span> <span class="fl">24</span><span class="op">)</span><span class="op">)</span>
<span class="co">#&gt;   Solar.R Wind Temp Month Day</span>
<span class="co">#&gt; 1     190  7.4   67     5   1</span>
<span class="co">#&gt; 2     118  8.0   72     5   2</span>
<span class="co">#&gt; 3     149 12.6   74     5   3</span>
<span class="co">#&gt; 4     313 11.5   62     5   4</span>
<span class="co">#&gt; 5      NA 14.3   56     5   5</span>
<span class="co">#&gt; 6      NA 14.9   66     