AAVSO Sudden Ionospheric Disturbance Report 
     December 1983
  
     Observers:
     A-01   A-09   A-19   A-26   A-28   
     A-46   A-49   A-50   A-52   
     
     YYMMDD      Event Peak (UT)   Importance
     831206         0725                2  
     831206         1000                1- 
     831206         1543                2  
     831206         1807                1  
     831206         1945                1  
     831206         2033                2  
     831206         2247                2  
     831207         0045                1- 
     831207         0055                2  
     831208         0750                1- 
     831216         1543                2  
     831217         0522                1- 
     831217         0612                1  
     831217         0735                1+ 
     831217         1402                1- 
     831217         1602                1  
     831217         1845                2  
     831217         2032                1+ 
     831217         2242                1  
     *******************************************
     Importance Summary December 1983
        1- events:  5
        1  events:  5
        1+ events:  2
        2  events:  7
        2+ events:  0
        3  events:  0
        3+ events:  0
     Total events:  19