39 daughter colonies of the 4a were tested:
CH-51-2-4819-1993 CH-51-2-4820-1994 CH-51-2-4821-1994 CH-51-4-5002-1994 CH-51-4-5003-1994 CH-51-4-5004-1994 CH-51-4-5005-1994 CH-51-4-5006-1994 CH-51-4-5007-1994 CH-51-4-5330-1994 CH-51-52-5160-1995 CH-51-52-5161-1995 CH-51-52-5162-1995 CH-51-52-5444-1995 CH-51-52-5445-1996 CH-51-52-5446-1996 CH-51-57-4859-1994 CH-51-57-4860-1994 CH-51-57-4861-1994 CH-51-57-5197-1995 CH-51-57-5198-1995 CH-51-57-5199-1995 CH-51-57-5611-1995 CH-51-57-5612-1995 CH-51-57-5614-1995 CH-51-57-6024-1996 CH-51-58-5222-1995 CH-51-58-5223-1995 CH-51-58-5224-1995 CH-51-58-5594-1995 CH-51-58-5595-1995 CH-51-58-5596-1995 CH-51-58-5597-1995 CH-51-58-5598-1996 CH-51-58-5599-1996 CH-51-58-5600-1996 CH-51-58-5601-1996 CH-51-58-5602-1996 CH-51-58-5603-1996
1 tested queens were mated at the mating station:
CH-51-57-6023-1998
4 daughter colonies of queens mated at the mating station were tested:
CH-51-57-6765-1999 CH-51-57-6767-1999 CH-51-57-6773-1999 CH-51-57-6774-1999