8 daughter colonies of the 4a were tested:
CH-51-12-1311-1982 CH-51-12-1312-1982 CH-51-12-1313-1982 CH-51-12-1440-1982 CH-51-12-1441-1982 CH-51-101-1323-1982 CH-51-105-1320-1982 CH-51-105-1321-1982
4 tested queens were mated at the mating station:
CH-51-100-1893-1984 CH-51-100-2486-1984 CH-51-102-1782-1984 CH-51-105-1705-1984
4 daughter colonies of queens mated at the mating station were tested:
CH-51-102-1902-1985 CH-51-102-2489-1985 CH-51-102-2490-1985 CH-51-102-2491-1985