how to use pyemma.plots.plot_cktest with 21 X 21 plot?

[hima111997]

i have 21 metastable states and when trying to use pyemma.plots.plot_cktest the subplots are very small and i cant see anything.
Is there a way to increase the size of each subplot?
i tried to increase figure_size but when the image is shown in jupyter lab, the lines appear very small