In the PCA section there is the following quote:

We see that these 150 components account for just over 90% of the variance.

While not inaccurate (150 components account for ~94.6% of the variance), it is somewhat misleading given that it implies 150 is the smallest round/significant figure which accounts for >= 90% of the variance, when in fact 90 components account for ~90.6% ("just over 90%"):

I suggest changing the line to "We see that these 150 components account for almost/roughly 95% of the variance.".