AAVSO Sudden Ionospheric Disturbance Report June 1998 Observers: A-05 A-09 A-50 A-52 A-62 A-63 A-72 A-80 A-81 A-82 A-84 YYMMDD Event Peak (UT) Importance 980607 1453 2 980608 1603 1 980611 1003 2 980612 2114 2 980612 2318 2 980613 0912 2 980613 1505 2+ 980613 1729 1+ 980616 1814 3 980620 1423 2 980620 2104 1+ 980620 2214 1+ 980621 1003 2+ 980621 1806 1- 980621 2110 1 980623 1925 1 980624 1136 1+ 980624 1804 1- 980624 1914 2+ 980625 0815 1 980625 1840 1- 980625 2049 1- 980625 2104 1+ 980627 0849 1- 980627 1818 1+ 980627 1906 1- 980628 1841 2+ 980628 1957 2 ******************************************* Importance Summary June 1998 1- events: 6 1 events: 4 1+ events: 6 2 events: 7 2+ events: 4 3 events: 1 3+ events: 0 Total events: 28