7 daughter colonies of the 4a were tested:
CH-51-2-7839-2002 CH-51-20-8146-2002 CH-51-20-8150-2002 CH-51-20-8151-2002 CH-51-20-8152-2002 CH-51-20-8153-2002 CH-51-20-8155-2002
7 tested queens were mated at the mating station:
CH-51-20-8411-2003 CH-51-20-8412-2003 CH-51-20-8413-2003 CH-51-20-8716-2003 CH-51-20-8717-2003 CH-51-20-8718-2003 CH-51-20-8720-2003
17 daughter colonies of queens mated at the mating station were tested:
CH-51-20-9300-2005 CH-51-20-9301-2005 CH-51-20-9302-2005 CH-51-20-9303-2005 CH-51-20-9458-2006 CH-51-20-9459-2005 CH-51-20-9460-2005 CH-51-20-9461-2005 CH-51-20-9462-2006 CH-51-20-9463-2006 CH-51-20-9464-2005 CH-51-20-9466-2006 CH-51-20-9467-2005 CH-51-20-9468-2005 CH-51-165-9692-2006 CH-51-165-9693-2006 CH-51-165-9694-2006