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Monthly overview (Dec 1990)

The monthly mean values of the geomagnetic field components at Kakioka are D: -6��50.3��, H: 30144nT, Z: 34970nT and F: 46169nT for December 1990.

Monthly average of the K-index daily sum is 11. indicates a low level of geomagnetic activity during the month.

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

The international 5 quietest days are the 10,11,19,22,26^th.

The international 5 most disturbed days are the 4,5,13,24,30^th.

Date	K-index daily sum	Geomagnetic activity	Geomagnetic phenomena	International 5 quietest days	International 5 quietest days	geomagnetic 1-minute value plot
1	06	calm				plot
2	11	moderately calm				plot
3	08	calm				plot
4	21	moderately disturbed			��	plot
5	19	moderately disturbed			��	plot
6	14	moderately calm				plot
7	05	calm				plot
8	14	moderately calm	si			plot
9	13	moderately calm				plot
10	00	extremely calm		��		plot
11	03	extremely calm		��		plot
12	10	calm				plot
13	18	moderately disturbed			��	plot
14	13	moderately calm				plot
15	09	calm				plot
16	12	moderately calm				plot
17	13	moderately calm				plot
18	09	calm				plot
19	03	extremely calm		��		plot
20	16	moderately calm				plot
21	05	calm				plot
22	07	calm		��		plot
23	15	moderately calm				plot
24	19	moderately disturbed			��	plot
25	19	moderately disturbed				plot
26	03	extremely calm				plot
27	07	calm				plot
28	06	calm				plot
29	04	calm				plot
30	23	disturbed	si			plot
31	17	moderately disturbed				plot

*) Plot diagram opens in a separate window.