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Monthly overview (Dec 1998)

The monthly mean values of the geomagnetic field components at Kakioka are D: -7°-2.7′°, H: 30033nT, Z: 35354nT and F: 46389nT for December 1998.

Monthly average of the K-index daily sum is 13.3. indicates a moderate level of geomagnetic activity during the month.

Notable geomagnetic events include 0 magnetic storms, 1 si, 3 bay, 1 sfe, 1 pi and 0 pc.

The international 5 quietest days are the 13,17,18,21,27^th.

The international 5 most disturbed days are the 5,11,25,26,29^th.

Date	K-index daily sum	Geomagnetic activity	Geomagnetic phenomena	International 5 quietest days	International 5 quietest days	geomagnetic 1-minute value plot
1	19	moderately disturbed				plot
2	09	calm				plot
3	13	moderately calm				plot
4	17	moderately disturbed				plot
5	20	moderately disturbed			○	plot
6	16	moderately calm				plot
7	12	moderately calm				plot
8	07	calm				plot
9	09	calm				plot
10	14	moderately calm				plot
11	33	disturbed	bay		○	plot
12	09	calm				plot
13	04	calm		○		plot
14	11	moderately calm				plot
15	08	calm				plot
16	17	moderately disturbed				plot
17	00	extremely calm		○		plot
18	06	calm		○		plot
19	13	moderately calm				plot
20	20	moderately disturbed				plot
21	11	moderately calm		○		plot
22	09	calm	bay			plot
23	13	moderately calm				plot
24	09	calm				plot
25	24	disturbed	pi		○	plot
26	22	moderately disturbed	bay		○	plot
27	01	extremely calm		○		plot
28	11	moderately calm	si sfe			plot
29	27	disturbed			○	plot
30	16	moderately calm				plot
31	11	moderately calm				plot

*) Plot diagram opens in a separate window.