AAVSO Sudden Ionospheric Disturbance Report 
     April 1985
  
     Observers:
     A-01   A-09   A-19   A-26   A-31   
     A-46   A-49   A-50   A-52   A-55   
     
     YYMMDD      Event Peak (UT)   Importance
     850421         1620                1+ 
     850422         1643                2  
     850422         1949                1  
     850423         0515                1- 
     850423         2111                1  
     850424         0157                1  
     850424         0504                2+ 
     850424         1000U               3  
     850424         1700                2  
     850425         0744                2  
     850425         1910                1- 
     850425         2243                2  
     850426         0027                1- 
     850429         1803                1  
     *******************************************
     Importance Summary April 1985
        1- events:  3
        1  events:  4
        1+ events:  1
        2  events:  4
        2+ events:  1
        3  events:  1
        3+ events:  0
     Total events:  14