No daughter colonies of the 4a were tested yet.
1 tested queens were mated at the mating station:
DE-4-1-3132-1971
20 daughter colonies of queens mated at the mating station were tested:
DE-4-220-1-1973 DE-4-220-1-1974 DE-4-220-2-1974 DE-4-220-3-1973 DE-4-220-3-1974 DE-4-220-4-1974 DE-4-220-5-1973 DE-4-220-5-1974 DE-4-220-7-1974 DE-4-220-10-1973 DE-4-220-13-1973 DE-4-220-16-1973 DE-8-15-26-1973 DE-8-15-27-1973 DE-8-15-28-1973 DE-8-15-29-1973 DE-8-15-30-1973 DE-8-15-31-1973 DE-8-15-32-1973 DE-8-15-33-1973