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Monthly overview (May 1998)

The monthly mean values of the geomagnetic field components at Kakioka are D: -7��2.7��, H: 30034nT, Z: 35337nT and F: 46376nT for May 1998.

Monthly average of the K-index daily sum is 17.6. indicates a high level of geomagnetic activity during the month.

Notable geomagnetic events include 2 magnetic storms, 4 si, 1 bay, 0 sfe, 9 pi and 0 pc.

The international 5 quietest days are the 6,13,14,28,31^th.

The international 5 most disturbed days are the 2,3,4,5,29^th.

Date	K-index daily sum	Geomagnetic activity	Geomagnetic phenomena	International 5 quietest days	International 5 quietest days	geomagnetic 1-minute value plot
1	15	moderately calm	storm			plot
2	33	disturbed			��	plot
3	35	disturbed	storm pi		��	plot
4	39	disturbed	si		��	plot
5	23	disturbed			��	plot
6	08	calm		��		plot
7	16	moderately calm	pi			plot
8	23	disturbed	si bay pi			plot
9	21	moderately disturbed				plot
10	16	moderately calm	pi			plot
11	17	moderately disturbed				plot
12	19	moderately disturbed	pi			plot
13	05	calm		��		plot
14	03	extremely calm		��		plot
15	11	moderately calm	si			plot
16	18	moderately disturbed				plot
17	14	moderately calm				plot
18	15	moderately calm				plot
19	13	moderately calm				plot
20	18	moderately disturbed	pi			plot
21	20	moderately disturbed				plot
22	13	moderately calm				plot
23	18	moderately disturbed				plot
24	19	moderately disturbed				plot
25	19	moderately disturbed	pi			plot
26	15	moderately calm				plot
27	14	moderately calm				plot
28	12	moderately calm		��		plot
29	23	disturbed	si pi			plot
30	23	disturbed				plot
31	08	calm				plot

*) Plot diagram opens in a separate window.