AAVSO Sudden Ionospheric Disturbance Report December 1985 Observers: A-52 YYMMDD Event Peak (UT) Importance 851212 0553 1- 851212 0608 1- ******************************************* Importance Summary December 1985 1- events: 2 1 events: 0 1+ events: 0 2 events: 0 2+ events: 0 3 events: 0 3+ events: 0 Total events: 2