Fig. 4.

Morphological Feature Distributions. Distribution APD₃₀ (first column), APD₈₀ (second column), triangulation (APD₉₀ – APD₃₀) (third column), and normalized triangulation $\left(\frac{{\mathrm{APD}}_{90}-{\mathrm{APD}}_{30}}{{\mathrm{APD}}_{90}}\right)$, rightmost column), for the spectral grouping result using 2 (top row), 3 (middle row), and 4 (bottom row) groups. The two group segmentation suggest two unique phenotypes in APD₃₀, APD₈₀, and normalized triangulation.