Component | 2006.5 | 2007.5 | 2008.5 | 2009.5 |
---|
dX/dt (nT/year) | 3.7 | 4.3 | 4.2 | 10.1 |
dY/dt (nT/year) | 6.6 | 3.8 | 3.2 | 3.7 |
dZ/dt (nT/year) | 5.8 | 4.1 | 4.3 | 8.0 |
- These differences were computed using 684 data points over the modelled area. The secular variation values were computed by getting the change of the field between two consecutive epochs of 1Â year interval (e.g. epochs 2006.0 and 2007.0 were used to get secular variation values at 2006.5 epoch)