No daughter colonies of the 4a were tested yet.
3 tested queens were mated at the mating station:
CH-50-6-85-2016 CH-50-60-60001-2016 CH-50-60-60117-2016
2 daughter colonies of queens mated at the mating station were tested:
CH-50-6-89-2018 CH-50-60-60222-2017