16 daughter colonies of the 4a were tested:
CH-51-2-4217-1992 CH-51-2-4218-1992 CH-51-2-4219-1992 CH-51-2-4440-1992 CH-51-2-4441-1992 CH-51-2-4442-1992 CH-51-2-4443-1992 CH-51-2-4444-1992 CH-51-2-4445-1992 CH-51-2-4446-1992 CH-51-2-4447-1992 CH-51-2-4448-1992 CH-51-58-4642-1993 CH-51-58-4871-1993 CH-51-58-4872-1993 CH-51-203-4693-1993
4 tested queens were mated at the mating station:
CH-51-9-4956-1994 CH-51-22-5250-1994 CH-51-22-5251-1994 CH-51-22-5253-1994
4 daughter colonies of queens mated at the mating station were tested:
CH-51-22-5690-1996 CH-51-22-5693-1996 CH-51-22-5694-1996 CH-51-22-5695-1996