9 daughter colonies of the 4a were tested:
CH-51-118-1711-1984 CH-51-241-1981-1985 CH-51-241-1982-1985 CH-51-241-1983-1985 CH-51-241-1984-1985 CH-51-241-1985-1985 CH-51-241-1986-1985 CH-51-241-1987-1985 CH-51-241-1988-1985
3 tested queens were mated at the mating station:
CH-51-240-2134-1986 CH-51-240-2135-1986 CH-51-240-2136-1986
4 daughter colonies of queens mated at the mating station were tested:
CH-51-114-3524-1990 CH-51-114-3525-1990 CH-51-114-3835-1990 CH-51-241-3527-1990