9 daughter colonies of the 4a were tested:
DE-2-152-4-2013 DE-2-152-8-2014 DE-2-152-11-2014 DE-2-152-15-2014 DE-2-152-17-2013 DE-2-152-24-2013 DE-2-152-27-2014 DE-2-152-31-2013 DE-2-152-44-2013
5 tested queens were mated at the mating station:
DE-2-152-17-2015 DE-2-152-18-2015 DE-2-152-33-2015 DE-2-152-41-2015 DE-2-152-55-2015
No daughter colonies from colonies mated at the station were tested yet.