Data download

The download of geomagnetic indices (that are not officially endorsed by IAGA but are already widely used and/or under development) is done in a two-steps procedure.
At first, the avaibility of the considered data is displayed.
Then, data may be uploaded after providing your e-mail address (necessary/used for data service only).

Data type
	ASY/SYM (since 1981)	aσ (since 1959)
Data range
	from...	to...
Output data format
	IAGA2002-like format