Table 1 The RMS misfit errors between the measured satellite data and data obtained from the main field models (January 2002), and RMS differences between the SV data and data obtained from SV models (January–December, 2002) at 400 km altitude.
Polynomial | Main field | SV | ||||
|---|---|---|---|---|---|---|
Degree | X | Y | Z | dX/dt | dY/dt | dZ/dt |
(nT) | (nT) | (nT) | (nT/year) | (nT/year) | (nT/year) | |
2 | 71.6 | 38.8 | 252.8 | 4.1 | 6.9 | 3.7 |
3 | 40.6 | 26.3 | 20.8 | 3.4 | 6.1 | 2.9 |
4 | 8.7 | 5.4 | 12.5 | 2.9 | 6.0 | 2.0 |
5 | 7.8 | 5.1 | 3.4 | |||
6 | 7.4 | 4.8 | 3.3 | |||