10 daughter colonies of the 4a were tested:
CH-51-102-3062-1989 CH-51-102-3063-1989 CH-51-102-3064-1989 CH-51-102-3065-1989 CH-51-102-3066-1989 CH-51-102-3068-1989 CH-51-108-2949-1989 CH-51-108-2951-1989 CH-51-108-2952-1989 CH-51-134-2964-1989
1 tested queens were mated at the mating station:
CH-51-102-3450-1990
5 daughter colonies of queens mated at the mating station were tested:
CH-51-102-3825-1991 CH-51-102-3826-1991 CH-51-102-3827-1991 CH-51-112-3823-1991 CH-51-112-3824-1991