## 3 Results and Discussions
### Consistency Analysis between GNSS, GRACE and GGFC
#### 3.1.3 Sampling Effects on the Comparisons  
To investigate the sampling effects on the conclusions, we re-do the comparison analysis based on the GGFC weekly solutions. Before illustrating the GGFC loading effects on GNSS coordinate time series, the combined GGFC solutions are re-sampled to GNSS weekly resolution solutions.  
For the weekly solutions, the mean value of correlation coefficient is 0.44, and 48% of the stations have a correlation larger than 0.5, and only 7% of the stations have a negative correlation. After  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Data Types** & & **WRMS\% > 0** & **WRMS\% < 0** & \(-\)**20\% \textless{} WRMS\% \textless{} 0** & **WRMS\% \textless{} \textless{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciasciitil{} \textasciitil{} \textasciitil{} \textasciitil{} \textasciasciitil{} \textasciasciitil{} \textasciitil{} \textasciitil{} \textasciasciitil{} \textasciasciitil{} \textasciasciasciitil{} \textascicorrecting the GNSS VD with GGFC solutions, 73% of the stations have their \(WRMS\) reduction, and 30% of the stations have a reduction larger than 20%. The statistical results are listed in Table 3. Comparison results indicate that the effects of the sampling rate of the data on the consistency of the GNSS and GGFC solutions are not significant in our analysis.