39 daughter colonies of the 4a were tested:
CH-51-2-4814-1993 CH-51-10-4080-1992 CH-51-10-4081-1992 CH-51-10-4082-1992 CH-51-10-4083-1992 CH-51-10-4084-1992 CH-51-10-4085-1992 CH-51-10-5208-1994 CH-51-10-5209-1994 CH-51-10-5210-1994 CH-51-10-5211-1994 CH-51-10-5212-1994 CH-51-10-5213-1994 CH-51-10-5214-1994 CH-51-10-5215-1994 CH-51-10-5216-1994 CH-51-10-5217-1994 CH-51-10-5218-1994 CH-51-10-5331-1994 CH-51-10-5332-1994 CH-51-16-4704-1992 CH-51-16-4705-1992 CH-51-16-4706-1992 CH-51-20-4224-1992 CH-51-20-4225-1992 CH-51-20-4226-1992 CH-51-20-4227-1992 CH-51-20-4228-1992 CH-51-20-4229-1992 CH-51-20-4230-1992 CH-51-20-4231-1992 CH-51-20-4550-1993 CH-51-20-4551-1993 CH-51-20-4552-1993 CH-51-20-4553-1993 CH-51-20-4878-1993 CH-51-20-4879-1993 CH-51-20-4880-1993 CH-51-20-4881-1993
4 tested queens were mated at the mating station:
CH-51-10-5217-1994 CH-51-10-5218-1994 CH-51-10-5331-1994 CH-51-20-5283-1994
2 daughter colonies of queens mated at the mating station were tested:
CH-51-10-5485-1995 CH-51-10-5486-1995