Uit-Logo Tromsø Geophysical Observatory
Faculty of Science
University of Tromsø
Geomagnetic Activity Index for Tromsø:
Activity index
 
The blue curve is the mean absolute deviation 
of H over the last 24 hours.		 The red curve is the mean absolute gradient (nT/min) 
of H over the last 24 hours

Responsible editor: Truls Lynne Hansen
Web & cgi programmer: Børre Heitmann Holmeslet
Last update:  11. oct. 2007