AAVSO Sudden Ionospheric Disturbance Report October 1997 Observers: A-05 A-09 A-50 A-52 A-62 A-63 A-72 A-80 YYMMDD Event Peak (UT) Importance 971002 2149 2+ 971016 0335 2 971028 1257 2 971031 0317 2 ******************************************* Importance Summary October 1997 1- events: 0 1 events: 0 1+ events: 0 2 events: 3 2+ events: 1 3 events: 0 3+ events: 0 Total events: 4