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Monthly overview (Jul 1990)

The monthly mean values of the geomagnetic field components at Kakioka are D: -6��50��, H: 30151nT, Z: 34949nT and F: 46158nT for July 1990.

Monthly average of the K-index daily sum is 16. indicates a slightly high level of geomagnetic activity during the month.

Notable geomagnetic events include 1 magnetic storms, 5 si, 1 bay, 0 sfe, 0 pi and 0 pc.

The international 5 quietest days are the 1,9,23,24,25^th.

The international 5 most disturbed days are the 10,19,20,28,29^th.

Date	K-index daily sum	Geomagnetic activity	Geomagnetic phenomena	International 5 quietest days	International 5 quietest days	geomagnetic 1-minute value plot
1	11	moderately calm		��		plot
2	11	moderately calm				plot
3	15	moderately calm				plot
4	15	moderately calm				plot
5	17	moderately disturbed				plot
6	15	moderately calm				plot
7	10	calm				plot
8	18	moderately disturbed				plot
9	10	calm		��		plot
10	20	moderately disturbed	si		��	plot
11	15	moderately calm				plot
12	11	moderately calm				plot
13	22	moderately disturbed				plot
14	18	moderately disturbed	si			plot
15	15	moderately calm				plot
16	13	moderately calm				plot
17	12	moderately calm				plot
18	12	moderately calm				plot
19	26	disturbed			��	plot
20	22	moderately disturbed			��	plot
21	12	moderately calm				plot
22	12	moderately calm				plot
23	09	calm		��		plot
24	09	calm		��		plot
25	11	moderately calm				plot
26	16	moderately calm				plot
27	18	moderately disturbed				plot
28	40	disturbed	storm si		��	plot
29	32	disturbed	bay			plot
30	19	moderately disturbed				plot
31	10	calm				plot

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