Gaussian mixture model fits of HFLI probability density function for the RH (top) and LH (bottom) subgroups.

Each model is the sum of N Gaussian functions, each Gaussian function being characterized by its mean (µi), standard deviation (σi) and fractional contribution (πi) for i = 1…N. AICc is the corrected Akaike’s Information Criterion (AICc), the optimal model having the lowest AICc value. The last column indicates the relative likelihood of each model as compared to the optimal one.