7 daughter colonies of the 4a were tested:
CH-51-25-15-2019 CH-51-25-22-2019 CH-51-25-33-2019 CH-51-25-77-2019 CH-51-25-83-2019 CH-51-25-89-2019 CH-51-25-990-2019
20 tested queens were mated at the mating station:
CH-51-38-1-2020 CH-51-38-25-2020 CH-51-38-87-2020 CH-51-40-1-2020 CH-51-40-3-2020 CH-51-146-23-2020 CH-51-146-30-2020 CH-51-169-1-2020 CH-51-206-11-2020 CH-51-206-18-2020 CH-51-206-30-2020 CH-51-208-18-2020 CH-51-208-2399-2020 CH-51-208-5111-2020 CH-51-208-5341-2020 CH-51-208-6949-2020 CH-51-208-7632-2020 CH-51-208-7953-2020 CH-51-208-8612-2020 CH-51-208-9942-2020
15 daughter colonies of queens mated at the mating station were tested:
CH-51-38-19-2021 CH-51-38-919-2021 CH-51-40-1-2021 CH-51-40-2-2021 CH-51-40-3-2021 CH-51-40-3-2022 CH-51-40-5-2022 CH-51-40-6-2022 CH-51-40-7-2021 CH-51-208-41-2021 CH-51-208-44-2021 CH-51-218-8-2021 CH-51-218-11-2021 CH-51-218-15-2021 CH-51-218-16-2021