25 daughter colonies of the 4a were tested:
CH-51-110-4169-1992  CH-51-110-4170-1992  CH-51-110-4171-1992  CH-51-110-4172-1992  CH-51-110-4173-1992  CH-51-110-4174-1992  CH-51-110-4175-1992  CH-51-110-4176-1992  CH-51-110-4177-1992  CH-51-110-4178-1992  CH-51-110-4667-1992  CH-51-110-4668-1992  CH-51-111-4250-1992  CH-51-111-4251-1992  CH-51-111-4252-1992  CH-51-111-4253-1992  CH-51-111-4254-1992  CH-51-111-4255-1992  CH-51-111-4256-1992  CH-51-111-4257-1992  CH-51-111-4258-1992  CH-51-111-4259-1992  CH-51-111-4260-1992  CH-51-111-4261-1992  CH-51-111-4262-1992  
17  tested queens were mated at the mating station:
CH-51-2-4819-1993  CH-51-113-4752-1993  CH-51-113-4753-1993  CH-51-113-4754-1993  CH-51-113-4755-1993  CH-51-113-4756-1993  CH-51-113-4757-1993  CH-51-113-4758-1993  CH-51-113-4759-1993  CH-51-113-4760-1993  CH-51-113-4761-1993  CH-51-113-4762-1993  CH-51-113-4763-1993  CH-51-113-4764-1993  CH-51-113-4765-1993  CH-51-114-4962-1993  CH-51-114-4963-1993  
6  daughter colonies of queens mated at the mating station were tested:
CH-51-113-5878-1997  CH-51-113-5879-1996  CH-51-113-5880-1997  CH-51-113-5881-1997  CH-51-113-5882-1997  CH-51-113-5883-1997