Table 1 The statistics of the observations, the remaining part after removing the GGM, and after removing both the GGM and topography model for each data type (unit [mGal])
Min | Max | Mean | STD | ||
|---|---|---|---|---|---|
Terrestrial | \(\delta g\) | − 295.02 | 370.49 | − 1.25 | 71.38 |
\(\delta g -\delta g_{\text {GGM}}\) | − 222.36 | 141.28 | − 3.91 | 23.82 | |
\(\delta g-\delta g_{\text {GGM}}-\delta g_{\text {topo}}\) | − 205.77 | 128.24 | 0.70 | 13.27 | |
Airborne | \(\delta g\) | − 105.81 | 523.90 | 32.43 | 66.58 |
\(\delta g -\delta g_{\text {GGM}}\) | − 58.79 | 84.45 | − 0.08 | 12.98 | |
\(\delta g-\delta g_{\text {GGM}}-\delta g_{\text {topo}}\) | − 34.25 | 34.35 | − 0.01 | 9.96 | |
Altimetry | \(\Delta g\) | − 208.52 | 257.34 | − 15.12 | 53.04 |
\(\Delta g -\Delta g_{\text {GGM}}\) | − 77.66 | 78.96 | − 0.14 | 11.23 | |
\(\Delta g-\Delta g_{\text {GGM}}-\Delta g_{\text {topo}}\) | − 47.83 | 51.60 | 0.01 | 7.24 | |