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Monthly overview (Dec 1991)

The monthly mean values of the geomagnetic field components at Kakioka are D: -6°-52.2′°, H: 30121nT, Z: 35025nT and F: 46196nT for December 1991.

Monthly average of the K-index daily sum is 17.9. indicates a high level of geomagnetic activity during the month.

Notable geomagnetic events include 0 magnetic storms, 5 si, 3 bay, 1 sfe, 0 pi and 0 pc.

The international 5 quietest days are the 6,7,15,22,25^th.

The international 5 most disturbed days are the 17,21,27,28,29^th.

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

*) Plot diagram opens in a separate window.