Peak amplitude of the solar oscillations measured over 27 years using data from the three-channel solar photometers (SPM) on the VIRGO Experiment aboard the SOHO spacecraft. Points are measurements from 25-day non-overlapping segments of the time series and the solid curves result from a median filter followed by smoothing with a Gaussian window (FWHM = 1 yr). The lack of points in the 400-nm data towards the end of the series is a result of reduced data quality, with too few points for reliable amplitude measurements.