23 daughter colonies of the 4a were tested:
CH-51-2-5625-1995 CH-51-2-5626-1995 CH-51-2-5627-1995 CH-51-2-5628-1995 CH-51-2-5629-1995 CH-51-4-5518-1995 CH-51-7-5295-1995 CH-51-7-5296-1995 CH-51-7-5297-1995 CH-51-7-5298-1995 CH-51-20-5452-1995 CH-51-20-5455-1995 CH-51-20-5717-1996 CH-51-20-5720-1996 CH-51-20-5721-1996 CH-51-20-5724-1996 CH-51-20-5725-1996 CH-51-20-5726-1996 CH-51-20-5727-1996 CH-51-20-5728-1996 CH-51-20-5729-1996 CH-51-21-5909-1996 CH-51-21-5910-1996
1 tested queens were mated at the mating station:
CH-51-10-6234-1997
16 daughter colonies of queens mated at the mating station were tested:
CH-51-10-6448-1999 CH-51-10-6449-1999 CH-51-10-6450-1999 CH-51-10-6451-1999 CH-51-10-6452-1999 CH-51-10-6453-1999 CH-51-10-6454-1999 CH-51-10-6455-1999 CH-51-10-6456-1998 CH-51-10-6457-1999 CH-51-10-6461-1999 CH-51-10-6462-1999 CH-51-10-6464-1999 CH-51-10-6984-2000 CH-51-10-6985-2000 CH-51-10-7248-2000