No daughter colonies of the 4a were tested yet.
1 tested queens were mated at the mating station:
DE-16-18-10-1971
16 daughter colonies of queens mated at the mating station were tested:
DE-16-18-53-1973 DE-16-18-54-1973 DE-16-18-55-1973 DE-16-18-56-1973 DE-16-18-57-1973 DE-16-18-58-1973 DE-16-18-59-1973 DE-16-18-60-1973 DE-16-18-62-1973 DE-16-18-63-1973 DE-16-18-64-1973 DE-16-18-65-1973 DE-16-18-66-1973 DE-16-18-67-1973 DE-16-18-68-1973 DE-16-18-70-1973