12 daughter colonies of the 4a were tested:
DE-18-26-198-2017 DE-18-26-562-2017 DE-18-26-1640-2017 DE-18-26-1641-2017 DE-18-26-1642-2017 DE-18-26-1660-2017 DE-18-26-1661-2017 DE-18-26-1681-2017 DE-18-26-1682-2017 DE-18-26-1683-2017 DE-18-26-1685-2017 DE-18-26-1688-2017
4 tested queens were mated at the mating station:
DE-7-151-9-2020 DE-7-152-39-2020 DE-7-152-41-2020 DE-7-215-1-2020
2 daughter colonies of queens mated at the mating station were tested:
DE-7-215-11-2021 DE-7-215-25-2021