5 daughter colonies of the 4a were tested:
CH-51-206-20-2013 CH-51-206-33-2013 CH-51-206-43-2013 CH-51-208-113-2013 CH-51-214-62-2013
4 tested queens were mated at the mating station:
CH-51-185-15-2015 CH-51-206-15-2015 CH-51-212-8-2015 CH-51-214-2-2015
1 daughter colonies of queens mated at the mating station were tested:
CH-51-214-17-2016