Before revision:  For the single protein species level, the fluctuation in the oscillation amplitudes is found to be larger than that of  oscillation periods, the distributions of which are reasonably described by the Weibull distribution and the Gaussian tail, respectively.
After revision:  For the single protein-species level, the fluctuation in the oscillation amplitudes is found to be larger than that of oscillation periods, the distributions of which are reasonably described by the Weibull distribution and the Gaussian tail, respectively.