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Table 2 Mean and RMS differences between tropospheric delays estimated by WVR and the two VLBI solutions (Kalman filter and LSM) during the CONT08 period. All values are in millimeters

From: Application of Kalman filtering in VLBI data analysis

  WVR-Kalman WVR-LSM
  Mean RMS Mean RMS
ZWD 1.23 3.86 1.13 4.37
East Grad. −0.30 0.47 −0.28 0.50
North Grad. 0.33 0.55 0.31 0.56