pan class="r-pr">#&gt;</span>   Annual_precipitation Prec_wettest_month Prec_driest_month       PC1</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 1                  400                 76                 1 -2.052589</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 2                  320                 60                 1 -2.170276</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 3                  237                 39                 1 -2.213166</span>
<span cla