Fig. 6
![Fig. 6](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40623-022-01581-x/MediaObjects/40623_2022_1581_Fig6_HTML.png)
The variations of AM2 and ERM2 in the eastern Asia–Australia and American sectors during the 2009 SSW. The vertical dashed lines are the same as those in Fig. 2a. The horizontal dashed lines represent the geomagnetic equator
The variations of AM2 and ERM2 in the eastern Asia–Australia and American sectors during the 2009 SSW. The vertical dashed lines are the same as those in Fig. 2a. The horizontal dashed lines represent the geomagnetic equator