12 daughter colonies of the 4a were tested:
CH-51-51-1780-1985 CH-51-51-1781-1985 CH-51-51-1937-1985 CH-51-51-1938-1985 CH-51-53-1627-1984 CH-51-55-1596-1984 CH-51-55-1597-1984 CH-51-55-1598-1984 CH-51-55-1824-1985 CH-51-55-1825-1985 CH-51-61-1619-1984 CH-51-61-1620-1984
11 tested queens were mated at the mating station:
CH-51-13-1872-1985 CH-51-13-2479-1985 CH-51-55-2047-1985 CH-51-59-1841-1985 CH-51-59-1842-1985 CH-51-59-1843-1985 CH-51-59-1844-1985 CH-51-59-2463-1985 CH-51-61-1906-1985 CH-51-61-2084-1985 CH-51-61-2492-1985
8 daughter colonies of queens mated at the mating station were tested:
CH-51-55-2575-1987 CH-51-55-2743-1987 CH-51-59-2812-1988 CH-51-59-2813-1988 CH-51-59-2814-1988 CH-51-59-2815-1988 CH-51-59-2816-1988 CH-51-100-2669-1988