Radioactivity soundings, Sounding ground station location: IB Oden, 7th deck;
Sonde launch: IB Oden, helicopter deck; Sonde: Vaisala RS92-SGPD and NSS921;
Ground station: Vaisala DigiCORA III. Vertical profiles of the GM tube count rates and the dose rates in the atmosphere, height 0-37 km.