Home > Observation data > Monthly overview > Monthly overview (Jan 1990)

Monthly overview (Jan 1990)

The monthly mean values of the geomagnetic field components at Kakioka are D: -6��49.2��, H: 30142nT, Z: 34935nT and F: 46141nT for January 1990.

Monthly average of the K-index daily sum is 16.8. indicates a slightly high level of geomagnetic activity during the month.

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

The international 5 quietest days are the 6,7,19,27,28^th.

The international 5 most disturbed days are the 22,23,24,29,30^th.

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

*) Plot diagram opens in a separate window.