AAVSO Sudden Ionospheric Disturbance Report Observer: A118 Station: AA24 -- 120502 1759 1820 1803 1 1BZ20 A118 40 120502 1759 1820 1803 1 2AA24 A118 -- 120502 1759 1820 1803 1 1RK38 A118 40 120502 1855 1920 1902 1 1AA24 A118 40 120510 2023 2038 2027 1- 5AA24 A118