Comparison of the dust mass distributions of different star-forming regions to that of Cha II. p_ϕ is the probability that the synthetic population drawn from the comparison samples and the reference sample come from the same parent population. f(≤ p_ϕ) is the cumulative distribution for p_ϕ resulting from the logrank two-sample test for censored data sets after 10⁴ MC iterations. The vertical lines correspond to p_ϕ of 0.05 and 0.001, respectively.