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Monthly overview (Apr 1998)

The monthly mean values of the geomagnetic field components at Kakioka are D: -7��2��, H: 30052nT, Z: 35330nT and F: 46382nT for April 1998.

Monthly average of the K-index daily sum is 15.1. indicates a moderate level of geomagnetic activity during the month.

Notable geomagnetic events include 1 magnetic storms, 2 si, 0 bay, 0 sfe, 11 pi and 0 pc.

The international 5 quietest days are the 1,2,5,15,29^th.

The international 5 most disturbed days are the 10,17,24,25,26^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	06	calm		��		plot
3	14	moderately calm	pi			plot
4	18	moderately disturbed				plot
5	05	calm		��		plot
6	08	calm				plot
7	15	moderately calm	si			plot
8	09	calm				plot
9	17	moderately disturbed				plot
10	21	moderately disturbed	pi		��	plot
11	16	moderately calm				plot
12	13	moderately calm				plot
13	09	calm	pi			plot
14	16	moderately calm	pi			plot
15	10	calm		��		plot
16	16	moderately calm	pi			plot
17	22	moderately disturbed			��	plot
18	11	moderately calm				plot
19	08	calm	pi			plot
20	16	moderately calm				plot
21	15	moderately calm				plot
22	11	moderately calm				plot
23	19	moderately disturbed	storm			plot
24	32	disturbed			��	plot
25	24	disturbed	pi		��	plot
26	30	disturbed	pi			plot
27	21	moderately disturbed				plot
28	18	moderately disturbed				plot
29	07	calm				plot
30	19	moderately disturbed	si			plot

*) Plot diagram opens in a separate window.