9 daughter colonies of the 4a were tested:
CH-51-57-4291-1993 CH-51-57-4292-1992 CH-51-57-4293-1992 CH-51-57-4294-1992 CH-51-57-4295-1992 CH-51-57-4597-1993 CH-51-57-4598-1993 CH-51-57-4601-1993 CH-51-57-4855-1993
4 tested queens were mated at the mating station:
CH-51-57-4854-1994 CH-51-57-4863-1994 CH-51-57-5192-1994 CH-51-57-5193-1994
1 daughter colonies of queens mated at the mating station were tested:
CH-51-57-5755-1996