2 daughter colonies of the 4a were tested:
CH-51-119-1-2010 CH-51-119-2-2010
5 tested queens were mated at the mating station:
CH-51-119-98-2011 CH-51-119-99-2011 CH-51-120-18-2011 CH-51-120-46-2011 CH-51-120-54-2011
1 daughter colonies of queens mated at the mating station were tested:
CH-51-122-50-2013