add this note to the current plot at the indicated position.
For more detailed control, use plt.annotate instead.
Valid strings are (with outer/above/outside/below being outside the axes):
‘outer upper left’, ‘above upper left’, ‘above upper center’, ‘above upper right’, ‘outer upper right’,
‘outside upper left’, ‘upper left’, ‘upper center’, ‘upper right’, ‘outside upper right’,
‘outside center left’, ‘center left’, ‘center’, ‘center right’, ‘outside center right’,
‘outside lower left’, ‘lower left’, ‘lower center’, ‘lower right’, ‘outside lower right’,
‘outer lower left’, ‘below lower left’, ‘below lower center’, ‘below lower right’, ‘outer lower right’.