I am not sure I have captured all the insights from the K-Means or the PCA in this summary. If there is more that can be said from looking at the diagrams above can you please reply by comment?

I am not sure why the bins are not working any more ...

Not sure why this stopped working, dimensions seem to be off ...

This PlotMatrix stopped picking up all dimensions from maples2003Clean ... ["year", "watershed", "stemLength", "leafMass", "stemMass", "leafArea"]

Changed it to pick up all dimensions still columns seem to have problems with the scale of the appearing grids and the tick marks

Not sure what happened with the dimensions here either ... maybe something to do with the default frame??