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

Monthly overview (Mar 1990)

The monthly mean values of the geomagnetic field components at Kakioka are D: -6��49.9��, H: 30124nT, Z: 34942nT and F: 46135nT for March 1990.

Monthly average of the K-index daily sum is 20.6. indicates an extremely high level of geomagnetic activity during the month.

Notable geomagnetic events include 5 magnetic storms, 1 si, 4 bay, 2 sfe, 0 pi and 0 pc.

The international 5 quietest days are the 4,10,16,17,31^th.

The international 5 most disturbed days are the 12,21,25,26,30^th.

Date	K-index daily sum	Geomagnetic activity	Geomagnetic phenomena	International 5 quietest days	International 5 quietest days	geomagnetic 1-minute value plot
1	22	moderately disturbed				plot
2	23	disturbed	sfe			plot
3	17	moderately disturbed				plot
4	10	calm		��		plot
5	15	moderately calm				plot
6	21	moderately disturbed				plot
7	16	moderately calm				plot
8	15	moderately calm				plot
9	15	moderately calm				plot
10	12	moderately calm		��		plot
11	17	moderately disturbed				plot
12	28	disturbed	storm		��	plot
13	31	disturbed	bay			plot
14	25	disturbed	si			plot
15	16	moderately calm				plot
16	11	moderately calm		��		plot
17	04	calm		��		plot
18	25	disturbed	storm			plot
19	15	moderately calm	sfe			plot
20	26	disturbed	storm			plot
21	30	disturbed			��	plot
22	26	disturbed	bay			plot
23	26	disturbed				plot
24	21	moderately disturbed				plot
25	30	disturbed	storm		��	plot
26	27	disturbed			��	plot
27	25	disturbed				plot
28	20	moderately disturbed				plot
29	23	disturbed	bay			plot
30	34	disturbed	storm			plot
31	13	moderately calm				plot

*) Plot diagram opens in a separate window.