Fig. 7

Power spectra for the station coordinates derived from the individual processing. The power spectra in 365 days were stacked over the stations and period from 2003 to 2021 shifting an interval of half a year. Except for GRG and GTZ, the repro2 solution is used up to 2014. ULR was eliminated because the noise level was too high to draw a consistent scale. The blue hatched area indicates the fortnightly band. The pink hatched area indicates the period of 8 days and its second and third harmonics