11 daughter colonies of the 4a were tested:
NL-55-2-73-2021 NL-55-3-97-2021 NL-55-4-2-2021 NL-55-4-5-2021 NL-55-4-32-2021 NL-55-4-33-2021 NL-55-44-31-2021 NL-55-44-37-2021 NL-55-44-44-2021 NL-55-49-59-2021 NL-55-49-81-2021
36 tested queens were mated at the mating station:
NL-55-8-3-2022 NL-55-12-29-2022 NL-55-35-50-2022 NL-55-35-51-2022 NL-55-35-52-2022 NL-55-35-58-2022 NL-55-35-60-2022 NL-55-35-67-2022 NL-55-39-5-2022 NL-55-46-3-2022 NL-55-46-4-2022 NL-55-46-8-2022 NL-55-46-10-2022 NL-55-46-11-2022 NL-55-49-77-2022 NL-55-49-79-2022 NL-55-53-3-2022 NL-55-53-6-2022 NL-55-53-7-2022 NL-55-53-8-2022 NL-55-53-9-2022 NL-55-53-10-2022 NL-55-53-11-2022 NL-55-55-19-2022 NL-55-55-20-2022 NL-55-55-21-2022 NL-55-55-61-2022 NL-55-55-96-2022 NL-55-55-97-2022 NL-55-59-95-2022 NL-55-999-25-2022 NL-55-999-32-2022 NL-55-999-33-2022 NL-55-999-34-2022 NL-55-999-37-2022 NL-55-999-38-2022
15 daughter colonies of queens mated at the mating station were tested:
NL-55-12-48-2023 NL-55-12-49-2023 NL-55-12-52-2023 NL-55-12-56-2023 NL-55-12-60-2023 NL-55-35-35-2024 NL-55-35-42-2024 NL-55-35-43-2024 NL-55-35-48-2024 NL-55-35-51-2024 NL-55-35-55-2024 NL-55-46-12-2024 NL-55-46-16-2023 NL-55-55-2132-2024 NL-55-55-6139-2024