c: Factor w/ 3 levels "Argentina","Petrohue",..: 1 1 1 1 1 1 1 1 1 1 ...</span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/utils/head.html" class="external-link">head</a></span><span class="op">(</span><span class="va">ChinookArg</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>      tl    w       loc</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 1 120.1 17.9 Argentina</span>
<span class="r-out co"><span class="r-pr