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Monthly overview (Oct 1990)

The monthly mean values of the geomagnetic field components at Kakioka are D: -6��50.5��, H: 30132nT, Z: 34962nT and F: 46155nT for October 1990.

Monthly average of the K-index daily sum is 16.7. indicates a slightly high level of geomagnetic activity during the month.

Notable geomagnetic events include 1 magnetic storms, 1 si, 4 bay, 0 sfe, 0 pi and 0 pc.

The international 5 quietest days are the 1,2,8,18,28^th.

The international 5 most disturbed days are the 10,11,12,15,31^th.

Date	K-index daily sum	Geomagnetic activity	Geomagnetic phenomena	International 5 quietest days	International 5 quietest days	geomagnetic 1-minute value plot
1	04	calm		��		plot
2	15	moderately calm		��		plot
3	15	moderately calm				plot
4	22	moderately disturbed				plot
5	16	moderately calm				plot
6	19	moderately disturbed				plot
7	10	calm				plot
8	08	calm		��		plot
9	18	moderately disturbed	storm			plot
10	32	disturbed	bay		��	plot
11	28	disturbed			��	plot
12	25	disturbed			��	plot
13	23	disturbed				plot
14	19	moderately disturbed				plot
15	23	disturbed	bay		��	plot
16	14	moderately calm				plot
17	06	calm				plot
18	08	calm		��		plot
19	12	moderately calm				plot
20	25	disturbed				plot
21	16	moderately calm	bay			plot
22	15	moderately calm				plot
23	12	moderately calm				plot
24	24	disturbed				plot
25	14	moderately calm				plot
26	14	moderately calm	si			plot
27	12	moderately calm				plot
28	06	calm				plot
29	15	moderately calm				plot
30	24	disturbed	bay			plot
31	23	disturbed				plot

*) Plot diagram opens in a separate window.