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https://matplotlib.org/api/_as_gen/matplotlib.pyplot.subplots_adjust.html
plt.subplots_adjust(left=None, bottom=None, right=None, top=None,
wspace=None, hspace=None)left = 0.125 # the left side of the subplots of the figure
right = 0.9 # the right side of the subplots of the figure
bottom = 0.1 # the bottom of the subplots of the figure
top = 0.9 # the top of the subplots of the figure
wspace = 0.2 # the amount of width reserved for blank space between subplots,
# expressed as a fraction of the average axis width
hspace = 0.2 # the amount of height reserved for white space between subplots,
# expressed as a fraction of the average axis height