This paper presents the latest results obtained from the analysis of the full-disk Doppler shift observations obtained at the geographic South Pole in 1981. About 80 normal modes of oscillation (l = 0-3) have now been identified. Their frequencies range from 1886 gHz (l = 1, n = 12) to 5074.5 gHz (/= 2, n = 35), and their amplitudes are as low as 2.5 cm s-l. Amplitude modulation occurs with periods of 1-2 days, and the individual oscillations appear to be excited randomly and independently. In cases where other groups have observed some of the modes identified by us, the agreement in frequency is good.