2 daughter colonies of the 4a were tested:
CH-51-104-2293-1987 CH-51-104-2294-1987
5 tested queens were mated at the mating station:
CH-51-104-2785-1988 CH-51-104-2786-1988 CH-51-108-2787-1988 CH-51-108-2788-1988 CH-51-241-3126-1988
2 daughter colonies of queens mated at the mating station were tested:
CH-51-108-2950-1989 CH-51-108-2953-1989