Tromsø Geophysical
Observatory
University of Tromsø
Browse Old Ionosonde Films:
Click on a GIF to return a larger one:
Original size and type (TIFF or JPEG)
1/1 size GIF -
1/2 size GIF -
1/4 size GIF
1. GIF # 1
Or get the next/previous 10 ionograms:
Last update: 28.Oct. 2011
TGO, University of Tromsø