LAT LON foF2 Station 54.6 13.4 7.6 JULIUSRUH 67.8 20.4 6.1 KIRUNA 48.7 -3.4 7.2 LANNION 59.9 30.7 6.9 ST PETERSBURG 66.5 66.5 4.0 SALEKHARD 51.5 -0.6 6.0 SLOUGH 42.7 23.4 8.3 SOFIA 40.8 0.5 7.5 TORTOSA 59.8 17.6 7.0 UPPSALA 52.1 21.1 7.9 WARSZAWA