8 daughter colonies of the 4a were tested:
CH-51-57-1518-1983 CH-51-57-1519-1983 CH-51-57-1520-1983 CH-51-57-1521-1983 CH-51-57-1587-1983 CH-51-57-1588-1983 CH-51-57-1789-1983 CH-51-101-1557-1983
7 tested queens were mated at the mating station:
CH-51-57-2348-1987 CH-51-57-2349-1987 CH-51-57-2350-1987 CH-51-57-2351-1987 CH-51-57-2352-1987 CH-51-57-2353-1987 CH-51-57-2646-1987
5 daughter colonies of queens mated at the mating station were tested:
CH-51-57-2970-1989 CH-51-57-2971-1989 CH-51-57-2972-1989 CH-51-57-2973-1989 CH-51-57-2974-1989