8 daughter colonies of the 4a were tested:
DE-6-12-148-1973 DE-6-12-153-1973 DE-6-12-154-1973 DE-6-12-156-1973 DE-6-12-189-1974 DE-6-12-190-1974 DE-6-12-191-1974 DE-6-12-192-1974
8 tested queens were mated at the mating station:
DE-6-54-60-1974 DE-6-54-61-1974 DE-6-54-62-1974 DE-6-54-63-1974 DE-6-54-64-1974 DE-6-54-65-1974 DE-6-54-66-1974 DE-7-45-537-1974
2 daughter colonies of queens mated at the mating station were tested:
DE-6-54-75-1976 DE-6-54-78-1976