There is no data available yet about the payload flown. Below there is a link to the only known reference.
Balloon launched on: 8/4/1984
Launch site: Holloman Air Force Base, Alamogordo, New Mexico, US
Balloon launched by: Air Force Geophysics Laboratory (AFGL)
Balloon manufacturer/size/composition: Zero Pressure Balloon Winzen - SV-020 - 11.620.000 cuft
Flight identification number: H84-21
End of flight (L for landing time, W for last contact, otherwise termination time): 8/4/1984
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 6 h
Landing site: 30 miles SE of Phoenix, Arizona, US
Payload weight: 2194 lb
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