AAVSO Sudden Ionospheric Disturbance Report
December 2004

Observers:
A29	A50	A52	A59	A87	A90	A93	A95
A96	A97	A99	A100	A101	A102	A108	

YYMMDD		Event Peak		Importance
041201		0720			3+
041201		1604			1-
041201		1620			1-
041201		1912			1-
041202		0005			1-
041207		1629			3
041212		1612			3
041219		0412			2
041223		1007			1+
041227		2131			1+
041228		0011			2
041228		0611			1+
041228		0635			1-
041228		0910			1-
041228		0920			2
041228		1551			1+
041228		1557			1+
041228		1754			2
041228		1758			1+
041229		0821			2+
041229		1338			1
041229		1626			2
041229		1921			1+
041230		0626			1
041230		0741			1
041230		1044			1+
041230		1117			1-
041230		2216			2
041231		0438			3
041231		1446			1
041231		1456			1+



**************************************************
Importance Summary - Dec 2004
	1- events:  7
	1  events:  4
	1+ events:  9
	2  events:  6
	2+ events:  1
	3  events:  3
	3+ events:  1
 ------------------
   Total events: 31