deletions | additions       diff --git a/figures/PCA_individual_ISS1/caption.md b/figures/PCA_individual_ISS1/caption.md  index aa8657c..10b8d57 100644  --- a/figures/PCA_individual_ISS1/caption.md  +++ b/figures/PCA_individual_ISS1/caption.md 
...
#Figure 4  This is the same plot as Figure 3, but now each of the ISS samples has its own color. This allows us to see where that starboard air vent is relative to the other samples. It's the green one in the upper left, kind of over by the toilet samples. And, you can see that the port air vent (bdark blue) is very close to it.