Fig. 7From: Geomagnetic activity dependence and dawn-dusk asymmetry of thermospheric winds from 9-year measurements with a Fabry–Perot interferometer in Tromsø, NorwayPolar plot of the a mean wind and b mean deviation, which are the same values as presented in Figs. 5 and 6, respectively. The quiet-time wind vector, which is same as shown in Fig. 4, is also presented in Panel a in blackBack to article page