AAVSO Sudden Ionospheric Disturbance Report Observer: A118 Station: QD22 -- 200529 0721 0742 0722 1 4BZ20 A118 40 200529 0721 0742 0722 1 4QD22 A118 -- 200529 0721 0742 0722 1 4RK38 A118 40 200529 1045 1110 1046 1 5QD22 A118 -- 200529 1045 1110 1046 1 4HO23 A118 -- 200529 1045 1055U1046 1- 3RK38 A118