2 daughter colonies of the 4a were tested:
DE-19-173-35-2018 DE-19-173-58-2018
6 tested queens were mated at the mating station:
DE-19-161-419-2019 DE-19-161-619-2019 DE-19-203-2119-2019 DE-19-203-2319-2019 DE-19-203-2819-2019 DE-19-203-3719-2019
2 daughter colonies of queens mated at the mating station were tested:
DE-19-203-65-2021 DE-19-203-76-2021