8 daughter colonies of the 4a were tested:
CH-51-241-6415-1999 CH-51-241-6792-1999 CH-51-241-7158-2000 CH-51-241-7159-2000 CH-51-241-7219-2000 CH-51-241-7220-2000 CH-51-241-7221-2000 CH-51-241-8131-2001
16 tested queens were mated at the mating station:
CH-51-57-7544-2001 CH-51-57-7548-2001 CH-51-57-8046-2001 CH-51-57-8048-2001 CH-51-68-7418-2001 CH-51-68-7419-2001 CH-51-68-7420-2001 CH-51-68-7421-2001 CH-51-68-7422-2001 CH-51-68-7423-2001 CH-51-68-7424-2001 CH-51-68-7968-2001 CH-51-241-7604-2001 CH-51-241-7605-2001 CH-51-241-7621-2001 CH-51-241-8133-2001
4 daughter colonies of queens mated at the mating station were tested:
CH-51-241-8088-2002 CH-51-241-8134-2002 CH-51-241-8465-2003 CH-51-241-8468-2003