33 daughter colonies of the 4a were tested:
CH-51-108-3589-1991 CH-51-108-3593-1991 CH-51-108-4091-1992 CH-51-108-4092-1992 CH-51-108-4093-1992 CH-51-108-4094-1992 CH-51-108-4095-1992 CH-51-108-4096-1992 CH-51-108-4097-1992 CH-51-108-4098-1992 CH-51-108-4099-1992 CH-51-108-4100-1992 CH-51-108-4101-1992 CH-51-108-4102-1992 CH-51-108-4103-1992 CH-51-108-4104-1992 CH-51-108-4105-1992 CH-51-108-4106-1992 CH-51-108-4107-1992 CH-51-108-4108-1992 CH-51-108-4109-1992 CH-51-108-4110-1992 CH-51-108-4111-1992 CH-51-108-4112-1992 CH-51-108-4113-1992 CH-51-108-4114-1992 CH-51-108-4115-1992 CH-51-108-4116-1992 CH-51-108-4747-1992 CH-51-108-4748-1992 CH-51-108-4749-1992 CH-51-108-4750-1992 CH-51-108-4896-1992
14 tested queens were mated at the mating station:
CH-51-4-4999-1993 CH-51-15-4686-1993 CH-51-15-4687-1993 CH-51-108-4893-1993 CH-51-131-4680-1993 CH-51-131-4681-1993 CH-51-131-4960-1993 CH-51-138-4842-1993 CH-51-138-4843-1993 CH-51-202-5043-1993 CH-51-202-5044-1993 CH-51-206-4516-1993 CH-51-206-4517-1993 CH-51-206-4519-1993
15 daughter colonies of queens mated at the mating station were tested:
CH-51-15-5576-1996 CH-51-19-5677-1996 CH-51-19-5678-1996 CH-51-19-5680-1996 CH-51-131-5254-1994 CH-51-131-5741-1995 CH-51-131-5743-1996 CH-51-138-5186-1994 CH-51-138-5188-1994 CH-51-138-5377-1995 CH-51-138-5379-1995 CH-51-206-5021-1994 CH-51-206-5321-1994 CH-51-207-5319-1994 CH-51-207-5320-1994