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PROCEDURE: ERG_LOAD_ISEE_VLF
PURPOSE:
To load VLF spectrum data obtained by ISEE ELF/VLF network from the ISEE ERG-SC site
KEYWORDS:
site = Observatory name, example, erg_load_isee_vlf, site='ath',
the default is 'all', i.e., load all available stations.
This can be an array of strings, e.g., ['ath', 'kap']
or a single string delimited by spaces, e.g., 'ath kap'.
Available sites as of July, 2017 : ath, kap, gak, ist, mam
downloadonly : if set, then only download the data, do not load it into variables.
no_server : use only files which are online locally.
no_download : use only files which are online locally. (Identical to no_server keyword.)
trange : Time range of interest (2 element array).
timeclip : if set, then data are time clipped.
cal_gain : if set, frequency-dependent gain of the antenna system is calibrated.
The unit of gain G(f) is V/T, and calibrated spectral power P(f)
at frequecy f is computed as
P(f) = S(f)/ (G(f)^2) [nT^2/Hz],
where S(f) is uncaibrated spectral power in unit of V^2/Hz.
EXAMPLE:
erg_load_isee_vlf, site='ath', $
trange=['2015-03-17/00:00:00','2015-03-17/02:00:00']
NOTE: See the rules of the road.
For more information, see http://stdb2.isee.nagoya-u.ac.jp/vlf/
HISTORY:
2016-02-21 : Initial release by Yoshi Miyoshi(ERG-Science Center, ISEE, Nagoya Univ.)
2017-07-07 : Modified by Satoshi Kurita (ISEE, Nagoya Univ., kurita at isee.nagoya-u.ac.jp)
2022-12-05 : Modified by Atsuki Shinbori (ISEE, Nagoya Univ., shinbori at isee.nagoya-u.ac.jp)
$LastChangedDate: 2023-01-11 10:09:14 -0800 (Wed, 11 Jan 2023) $
$LastChangedRevision: 31399 $
(See projects/erg/ground/vlf/erg_load_isee_vlf.pro)