Compared to earlier polar motion (PM) data, the combined Earth orientation series based on precise space-geodetic measurements has a higher accuracy and a higher temporal resolution. Therefore, an analysis of these data should provide considerably more precise results. By using the time series SPACE99 computed by the Jet Propulsion Laboratory (JPL) from 1976 to 2000 with one-day sampling, the Chandler and annual wobbles have been separated by recursive band-pass filtering of the PM coordinates (Höpfner 2002a). In this study, we show the parameter variability of the Chandler and annual wobbles. The results presented include the radii and their direction angles as well as the period lengths and revolution motions over the analysis intervals.