AAVSO Sudden Ionospheric Disturbance Report December 1992 Observers: A-03 A-09 A-40 A-50 A-59 A-61 A-62 A-63 A-65 A-66 A-67 A-68 A-69 A-70 A-71 A-72 A-73 A-74 A-75 A-76 A-77 A-78 YYMMDD Event Peak (UT) Importance 921201 0528 1 921201 1032 2 921201 1441 1- 921201 1559 1- 921201 1630 1- 921201 1754 2+ 921201 2023 1+ 921202 0630 1- 921202 0945 1+ 921202 1154 1- 921202 1552 1- 921203 0616 1+ 921203 2030 2+ 921203 2259 1- 921204 0717 1- 921204 1138 2 921204 1242 1- 921204 1354 1 921204 1429 1- 921204 1514 1- 921204 1733 2+ 921205 1430 2 921205 1547 1- 921205 1602 1 921207 1431 2 921207 1554 1- 921208 1507 1 921208 1546 1 921208 1812 1 921209 1046 1- 921209 1240 1- 921209 2345 1- 921210 1045 1- 921210 1203 1 921210 1345 1+ 921211 1100 1+ 921211 1153 1- 921211 1215 1- 921211 1450 1 921211 1604 1+ 921212 1550 1 921212 2342 1- 921213 1227 1- 921213 1258 1- 921213 1316 2 921213 1654 1- 921213 2144 1+ 921214 1127 1 921214 1749 2 921215 0905 2 921215 1659 1 921216 0602 1 921217 1131 1- 921218 0329 1 921220 1630 2 921220 1730 1 921222 1450 1 921224 1300 1+ 921229 0632 1- 921229 0939 1 921229 1038 1- 921229 1719 1- 921230 0631 1- 921230 0942 1 921230 2126 2 921231 1314 1+ 921231 1426 1- 921231 1640 1- 921231 1932 1+ ******************************************* Importance Summary December 1992 1- events: 30 1 events: 17 1+ events: 10 2 events: 9 2+ events: 3 3 events: 0 3+ events: 0 Total events: 69