lass="co">#&gt; [[1]]</span></span>
<span><span class="co">#&gt;                Oil fields Oil refineries Crude dist. Diesel dist.</span></span>
<span><span class="co">#&gt; Crude               50000              0           0            0</span></span>
<span><span class="co">#&gt; Crude - Dist.           0          47000           0            0</span></span>
<span><span class="co">#&gt; Crude - Fields          0              0       47500            0</span></span>
<span><span class="co">#&gt; Diesel     