No daughter colonies of the 4a were tested yet.
3 tested queens were mated at the mating station:
CH-50-6-92-2009 CH-50-6-126-2009 CH-50-6-164-2009
12 daughter colonies of queens mated at the mating station were tested:
CH-50-54-50147-2010 CH-50-54-50149-2010 CH-50-54-50153-2010 CH-50-54-50157-2010 CH-50-54-50162-2010 CH-50-54-50454-2010 CH-50-54-50455-2010 CH-50-91-60048-2011 CH-50-91-60050-2011 CH-50-91-60057-2011 CH-50-91-60065-2011 CH-50-136-30657-2012