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Monthly overview (Mar 1991)

The monthly mean values of the geomagnetic field components at Kakioka are D: -6��51.6��, H: 30113nT, Z: 34979nT and F: 46156nT for March 1991.

Monthly average of the K-index daily sum is 20.8. indicates an extremely high level of geomagnetic activity during the month.

Notable geomagnetic events include 2 magnetic storms, 4 si, 2 bay, 9 sfe, 0 pi and 0 pc.

The international 5 quietest days are the 3,11,14,15,29^th.

The international 5 most disturbed days are the 24,25,26,27,30^th.

Date	K-index daily sum	Geomagnetic activity	Geomagnetic phenomena	International 5 quietest days	International 5 quietest days	geomagnetic 1-minute value plot
1	20	moderately disturbed				plot
2	17	moderately disturbed				plot
3	09	calm		��		plot
4	15	moderately calm	si			plot
5	26	disturbed	bay sfe			plot
6	28	disturbed				plot
7	27	disturbed	sfe			plot
8	24	disturbed				plot
9	26	disturbed	si			plot
10	18	moderately disturbed				plot
11	08	calm	sfe	��		plot
12	19	moderately disturbed				plot
13	22	moderately disturbed	si bay			plot
14	12	moderately calm		��		plot
15	11	moderately calm	sfe	��		plot
16	14	moderately calm	sfe			plot
17	19	moderately disturbed				plot
18	10	calm				plot
19	21	moderately disturbed	sfe			plot
20	19	moderately disturbed	si			plot
21	25	disturbed	storm			plot
22	24	disturbed	sfe			plot
23	17	moderately disturbed				plot
24	44	disturbed	storm		��	plot
25	35	disturbed			��	plot
26	41	disturbed			��	plot
27	25	disturbed			��	plot
28	21	moderately disturbed				plot
29	09	calm	sfe			plot
30	27	disturbed				plot
31	12	moderately calm				plot

*) Plot diagram opens in a separate window.