No daughter colonies of the 4a were tested yet.
3 tested queens were mated at the mating station:
DE-2-173-72-1996 DE-2-173-77-1996 DE-2-173-90-1996
6 daughter colonies of queens mated at the mating station were tested:
DE-2-173-37-1997 DE-2-173-40-1997 DE-2-173-41-1997 DE-2-173-42-1997 DE-2-173-43-1997 DE-2-173-44-1997