AAVSO Sudden Ionospheric Disturbance Report 
     July 1997

     Observers:
     A-05   A-09   A-40   A-50   A-52
     A-62   A-63   A-69   A-72   A-80
     A-81   A-82   A-84

     YYMMDD      Event Peak (UT)   Importance
     970703         0231                2  
     970710         1313                1- 
     970710         1447                1- 
     970710         1524                2+ 
     970720         1333                1- 
     970720         1345                1- 
     970720         1426                1- 
     970720         1508                1- 
     970723         1656                1- 
     970725         2025                2+ 
     970727         0436                3  
     *******************************************
     Importance Summary July 1997
        1- events:  7
        1  events:  0
        1+ events:  0
        2  events:  1
        2+ events:  2
        3  events:  1
        3+ events:  0
     Total events:  11