G1 phase	G2 phase
Specific cluster: X	no. of G1 cells in X	no. of G2 cells in X
All other clusters	total −o. of G1 cells − no. of G1 cells in X	total no. of G2 cells − no. of G2 cells in X

Chi-square goodness-of-fit test was performed using chisq.test function in R. For small numbers, Fisher’s exact test was performed instead.