14 daughter colonies of the 4a were tested:
CH-51-25-7-2018 CH-51-25-30-2018 CH-51-25-31-2018 CH-51-25-34-2018 CH-51-25-35-2018 CH-51-25-36-2018 CH-51-25-47-2018 CH-51-25-48-2018 CH-51-25-57-2018 CH-51-25-58-2018 CH-51-25-59-2018 CH-51-25-60-2018 CH-51-25-65-2018 CH-51-25-164-2018
24 tested queens were mated at the mating station:
CH-51-22-2-2019 CH-51-29-23-2019 CH-51-31-2-2019 CH-51-31-3-2019 CH-51-31-4-2019 CH-51-31-6-2019 CH-51-31-8-2019 CH-51-38-9-2019 CH-51-38-26-2019 CH-51-38-64-2019 CH-51-40-1-2019 CH-51-40-2-2019 CH-51-40-3-2019 CH-51-165-2-2019 CH-51-165-4-2019 CH-51-165-5-2019 CH-51-165-7-2019 CH-51-165-8-2019 CH-51-169-1-2019 CH-51-169-2-2019 CH-51-187-34-2019 CH-51-208-8-2019 CH-51-208-53-2019 CH-51-208-115-2019
12 daughter colonies of queens mated at the mating station were tested:
CH-51-38-9-2021 CH-51-38-14-2021 CH-51-38-16-2021 CH-51-38-27-2021 CH-51-38-34-2021 CH-51-38-80-2021 CH-51-38-83-2021 CH-51-38-92-2020 CH-51-38-909-2021 CH-51-38-983-2021 CH-51-40-1-2020 CH-51-40-7-2020