Volume II contains the power spectra plots for vertical, lateral and forward gust velocities corrected for airplane motion, followed by the power spectra plots of uncorrected vertical and uncorrected lateral gust velocities. The data presented were obtained from 109 high altitude storm penetrations in which the length of runs varied up to 240 seconds. The data were sampled 25 times per second and the autocorrelation function was computed for 125 phase shifts.