8 daughter colonies of the 4a were tested:
CH-50-56-10262-2018 CH-50-133-10240-2018 CH-50-133-10255-2018 CH-50-133-10264-2018 CH-50-133-10272-2018 CH-50-133-10276-2018 CH-50-133-10277-2018 CH-50-133-10280-2018
1 tested queens were mated at the mating station:
CH-50-133-42152-2019
1 daughter colonies of queens mated at the mating station were tested:
CH-50-133-42846-2020