13 daughter colonies of the 4a were tested:
DE-4-23-6-1992 DE-4-23-7-1992 DE-4-23-8-1992 DE-4-23-9-1992 DE-4-23-13-1992 DE-4-23-15-1992 DE-4-64-8-1992 DE-4-64-9-1992 DE-4-64-10-1992 DE-4-64-11-1992 DE-4-64-12-1992 DE-4-64-13-1992 DE-4-64-16-1992
6 tested queens were mated at the mating station:
DE-4-23-24-1993 DE-4-23-25-1993 DE-4-23-27-1993 DE-4-23-28-1993 DE-4-23-29-1993 DE-4-23-32-1993
6 daughter colonies of queens mated at the mating station were tested:
DE-4-23-27-1994 DE-4-23-28-1994 DE-4-23-29-1994 DE-4-23-30-1994 DE-4-23-31-1994 DE-4-23-32-1994