Distributions of the five metrics for real BATSE light curves (blue) and simulated profiles (red) obtained using the latest optimised parameter set (see Table 2). Top left: average peak-aligned post-peak normalised time profile and root mean square (rms) deviation of the individual peak-aligned profiles, F_rms ≡ [⟨(F/F_p)²⟩−⟨F/F_p⟩²]^1/2. Top middle: average peak-aligned third moment profiles. Top left: average autocorrelation function of the GRBs. Bottom left: distribution of the T_20% duration. Bottom right: S/N distribution of the GRBs. Like in B24, the curves in the top left and top middle panels were smoothed using a Savitzky-Golay filter to reduce the effects of Poisson noise, while the distributions in the bottom left panel were smoothed with a Gaussian kernel convolution.