Distribution of C-complex and its endmember classes D and Z in the first latent component vs the second (top) and the fourth (bottom) latent components. The samples assigned to each class are given with the respective class letter. The latent scores of all samples outside these classes are shown as grey circles. Some outliers in z₂ and z₄ are not shown for readability. The five subpanels above each panel show regions of interest where a selection of asteroids are highlighted by replacing the symbol with the respective asteroid’s number. If more than one spectrum of the asteroid is in the input data, its number may appear several times.