html" class="external-link">ggplot</a></span><span class="op">(</span><span class="va">lincoln_weather</span>, <span class="fu"><a href="https://ggplot2.tidyverse.org/reference/aes.html" class="external-link">aes</a></span><span class="op">(</span>x <span class="op">=</span> <span class="va">`Mean Temperature [F]`</span>, y <span class="op">=</span> <span class="va">Month</span>, fill <span class="op">=</span> <span class="fu"><a href="https://ggplot2.tidyverse.org/reference/aes_eval.html" class="external-l