6 daughter colonies of the 4a 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
4 tested queens were mated at the mating station:
CH-51-24-6650-1998 CH-51-208-6300-1998 CH-51-208-6301-1998 CH-51-209-6241-1998
25 daughter colonies of queens mated at the mating station were tested:
CH-51-108-8265-2002 CH-51-108-8266-2002 CH-51-108-8267-2002 CH-51-205-7780-2002 CH-51-205-7781-2002 CH-51-205-7782-2002 CH-51-208-6690-1999 CH-51-208-6691-1999 CH-51-208-6692-1999 CH-51-208-6693-1999 CH-51-208-6699-1999 CH-51-208-6700-1999 CH-51-208-6701-1999 CH-51-208-6702-1999 CH-51-208-6703-1999 CH-51-208-7119-1999 CH-51-208-7989-2002 CH-51-208-7990-2002 CH-51-208-7991-2001 CH-51-208-7992-2002 CH-51-208-7993-2002 CH-51-208-7994-2002 CH-51-209-6470-1999 CH-51-209-6471-1999 CH-51-209-6472-1999