Multiple Y Axes, Part 2

city_frame["population"].plot(ax=ax,

style="b-",

use_index=True,

rot=90)

city_frame["area"].plot(ax=ax_area,

style="g-",

use_index=True,

rot=90)

city_frame["density"].plot(ax=ax_density,

style="r-",

use_index=True,

rot=90)