Dear Meredith,

    If you go to http://www.geo.fmi.fi/image/gif/ click on 'on line 
magnetograms' and then on Kiruna, you will find FFT magnetic pulsation 
measurements as well as X, Y, Z  and total field plots. You can also get sky 
camera images.

    Samnet has the current and yesterdays'  magnetograms 
http://samsun.york.ac.uk/samnet/rt_mgram.html

    There is also extensive coverage on 
http://www.ips.gov.au/asfc/current/geomagnetic.html#geofor
and a 'tutorial' on http://plasma.newcastle.edu.au/spwg/

    Regards,

    Chris Chapman
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