No daughter colonies of the 4a were tested yet.
6 tested queens were mated at the mating station:
DE-4-7-34-1988 DE-4-23-16-1988 DE-4-66-16-1988 DE-4-66-17-1988 DE-4-66-19-1988 DE-4-66-21-1988
30 daughter colonies of queens mated at the mating station were tested:
DE-4-7-2-1991 DE-4-7-2-1992 DE-4-7-3-1991 DE-4-7-3-1992 DE-4-7-4-1991 DE-4-7-4-1992 DE-4-7-5-1991 DE-4-7-6-1991 DE-4-7-6-1992 DE-4-7-7-1991 DE-4-7-7-1992 DE-4-7-8-1991 DE-4-7-9-1991 DE-4-7-10-1991 DE-4-7-11-1991 DE-4-7-11-1992 DE-4-7-12-1991 DE-4-7-12-1992 DE-4-7-13-1991 DE-4-7-14-1991 DE-4-7-15-1991 DE-4-7-16-1991 DE-4-7-17-1992 DE-4-7-18-1991 DE-4-7-18-1992 DE-4-7-21-1991 DE-4-7-21-1992 DE-4-7-22-1991 DE-4-7-22-1992 DE-4-7-23-1992