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Faculty of Science and Technology
UiT, The Arctic University of Norway
Geomagnetic Activity Index, Tromsø
Activity Index last 33 days, Tromso
This figure tells the geomagnetic activity as observed from Tromsø (in the auroral zone) during the last 33 days.
As a measure of activity, we have used an index describing the average deviation of the horizontal field component from its normal value.

Activity Index since 1987, Tromso

TGO staff
Last page update 27.Oct.2014