Fig. 11
From: Tropospheric delay determination by Kalman filtering VLBI data
ZWD differences at Onsala during CONT14. The differences in ZWD from the various techniques with respect to the WVR data are shown for station Onsala during CONT14. In order to compute the differences, all time series have been interpolated to feature the same temporal resolution as the WVR data. For a better visibility, the differences have been smoothed (see text)