8 daughter colonies of the 4a were tested:
CH-51-20-5278-1994 CH-51-20-5279-1994 CH-51-20-5280-1994 CH-51-20-5281-1994 CH-51-20-5454-1995 CH-51-20-5457-1995 CH-51-20-5458-1995 CH-51-20-5459-1995
12 tested queens were mated at the mating station:
CH-51-6-5523-1995 CH-51-6-5524-1995 CH-51-6-5525-1995 CH-51-10-5488-1995 CH-51-19-5366-1995 CH-51-20-5452-1995 CH-51-20-5455-1995 CH-51-22-5403-1995 CH-51-68-5476-1995 CH-51-68-5477-1995 CH-51-68-5478-1995 CH-51-68-5479-1995
21 daughter colonies of queens mated at the mating station were tested:
CH-51-6-6106-1997 CH-51-6-6107-1997 CH-51-6-6108-1997 CH-51-6-6565-1998 CH-51-6-6566-1998 CH-51-6-6567-1998 CH-51-15-5954-1997 CH-51-15-5955-1997 CH-51-19-5675-1996 CH-51-19-5676-1996 CH-51-20-5712-1997 CH-51-20-6077-1997 CH-51-20-6082-1997 CH-51-20-6083-1997 CH-51-22-6110-1997 CH-51-22-6111-1997 CH-51-22-6112-1997 CH-51-22-6113-1997 CH-51-22-6114-1997 CH-51-22-6115-1997 CH-51-22-6116-1997