Fig. 5From: Quasi-6-day wave effects in ionospheric E and F region during the recent solar maximum 2014–2015The time variations of the foF2 spectrum at 12:00 LT during 2014 at Guam (GU), Sanya (SA), Wuhan (WU), Beijing (BP), Mohe (MH) and Yakusk (YA). Dashed red lines represent the period of 5 and 7 days, respectivelyBack to article page