7 daughter colonies of the 4a were tested:
DE-2-152-4-2010 DE-2-152-8-2010 DE-2-152-11-2010 DE-2-152-17-2010 DE-2-152-22-2010 DE-2-152-25-2010 DE-2-152-33-2010
6 tested queens were mated at the mating station:
DE-2-152-3-2012 DE-2-152-5-2012 DE-2-152-8-2012 DE-2-152-14-2012 DE-2-152-17-2012 DE-2-152-23-2012
9 daughter colonies of queens mated at the mating station 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