8 daughter colonies of the 4a were tested:
CH-51-101-2316-1987 CH-51-101-2317-1987 CH-51-101-2448-1987 CH-51-101-2449-1987 CH-51-101-2567-1987 CH-51-101-2568-1987 CH-51-101-2569-1987 CH-51-101-2570-1987
21 tested queens were mated at the mating station:
CH-51-100-2671-1988 CH-51-100-2672-1988 CH-51-100-2673-1988 CH-51-100-2674-1988 CH-51-100-2675-1988 CH-51-100-2676-1988 CH-51-101-2774-1988 CH-51-101-2775-1988 CH-51-101-2776-1988 CH-51-106-2744-1988 CH-51-106-2745-1988 CH-51-106-2746-1988 CH-51-106-2747-1988 CH-51-106-2748-1988 CH-51-106-2749-1988 CH-51-106-2750-1988 CH-51-106-3409-1988 CH-51-106-3410-1988 CH-51-106-3411-1988 CH-51-240-3127-1988 CH-51-241-3477-1988
21 daughter colonies of queens mated at the mating station were tested:
CH-51-100-3610-1991 CH-51-109-3983-1991 CH-51-109-3984-1991 CH-51-109-3985-1991 CH-51-109-3986-1991 CH-51-109-3987-1991 CH-51-109-3988-1991 CH-51-109-3989-1991 CH-51-109-3990-1991 CH-51-111-3738-1991 CH-51-111-3739-1991 CH-51-111-3741-1991 CH-51-111-3742-1991 CH-51-111-3743-1991 CH-51-111-3744-1991 CH-51-111-3745-1991 CH-51-240-3488-1990 CH-51-241-3528-1990 CH-51-241-3557-1990 CH-51-241-3558-1990 CH-51-241-4278-1991