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Monthly overview (Fab 1991)

The monthly mean values of the geomagnetic field components at Kakioka are D: -6��50.6��, H: 30138nT, Z: 34972nT and F: 46167nT for February 1991.

Monthly average of the K-index daily sum is 14.8. indicates a moderate level of geomagnetic activity during the month.

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

The international 5 quietest days are the 3,6,16,17,18^th.

The international 5 most disturbed days are the 1,9,11,23,28^th.

Date	K-index daily sum	Geomagnetic activity	Geomagnetic phenomena	International 5 quietest days	International 5 quietest days	geomagnetic 1-minute value plot
1	24	disturbed	storm		��	plot
2	14	moderately calm				plot
3	08	calm		��		plot
4	08	calm	si sfe			plot
5	18	moderately disturbed				plot
6	11	moderately calm		��		plot
7	16	moderately calm				plot
8	22	moderately disturbed	bay			plot
9	20	moderately disturbed			��	plot
10	13	moderately calm				plot
11	22	moderately disturbed	bay		��	plot
12	19	moderately disturbed				plot
13	17	moderately disturbed				plot
14	12	moderately calm				plot
15	11	moderately calm				plot
16	08	calm		��		plot
17	04	calm		��		plot
18	03	extremely calm				plot
19	11	moderately calm				plot
20	15	moderately calm				plot
21	18	moderately disturbed				plot
22	21	moderately disturbed				plot
23	25	disturbed			��	plot
24	14	moderately calm				plot
25	12	moderately calm				plot
26	11	moderately calm				plot
27	15	moderately calm				plot
28	22	moderately disturbed				plot

*) Plot diagram opens in a separate window.