Mean distortion, standard deviation of distortion, and mean SNR plots as a function of the simulated noise for the combination methods.

(A) The mean distortion of the combined spectrums’ peaks ratio resulting from the Monte Carlo simulation. Due to the signal content remaining constant and the associated SNR of the combined spectrum varying due to the different combination methods, the mean distortion is shown as a function of the simulated noise level. (B) The standard deviation of the distortion from the true ratio is also shown as a function of the simulated noise level. (C) The mean SNR of each combination derived from the highest peak’s amplitude over the standard deviation of the noise in the range of the highest simulated noise levels.