16 daughter colonies of the 4a were tested:
DE-4-9-2-1991 DE-4-9-6-1991 DE-4-9-12-1991 DE-4-9-119-1991 DE-4-9-120-1991 DE-4-9-122-1991 DE-4-9-123-1991 DE-4-9-124-1991 DE-4-9-125-1991 DE-4-9-128-1991 DE-4-9-130-1991 DE-4-9-131-1991 DE-4-9-132-1991 DE-4-9-133-1991 DE-4-9-136-1991 DE-4-9-137-1991
8 tested queens were mated at the mating station:
DE-4-9-114-1992 DE-4-9-134-1992 DE-4-9-135-1992 DE-4-9-136-1992 DE-4-9-137-1992 DE-4-9-139-1992 DE-4-9-141-1992 DE-4-9-142-1992
11 daughter colonies of queens mated at the mating station were tested:
DE-4-9-158-1994 DE-4-9-161-1994 DE-4-9-162-1994 DE-4-9-164-1994 DE-4-9-165-1994 DE-4-9-166-1994 DE-4-9-168-1994 DE-4-9-169-1994 DE-4-9-176-1994 DE-4-9-177-1994 DE-4-9-180-1994