e negative ranges</span>
<span class='fu'>ggplot</span><span class='op'>(</span><span class='va'>huron</span><span class='op'>)</span> <span class='op'>+</span>
  <span class='fu'>stat_horizon</span><span class='op'>(</span><span class='fu'>aes</span><span class='op'>(</span><span class='va'>year</span>, <span class='va'>level</span>, fill <span class='op'>=</span> <span class='va'>..Cutpoints..</span><span class='op'>)</span>, reverse <span class='op'>=</span> <span class='cn'>TRUE</span><span class='op'>)