Table 2. Percentage contributions to the variance from the first three principal components of data sets 2A and 2B. PC1 has correlation between the label and the L parameters, while PC2 and PC3 correlate with the X and R parameters, respectively.

Label	PC1	PC2	PC3
E(dxy)	48.3%	17.9%	15.4%
E(π*)–E(dxy)	47.2%	17.9%	15.7%