No daughter colonies of the 4a were tested yet.
18 tested queens were mated at the mating station:
CH-52-12-864-2015 CH-52-12-865-2015 CH-52-12-867-2015 CH-52-12-868-2015 CH-52-12-869-2015 CH-52-12-870-2015 CH-52-12-871-2015 CH-52-12-872-2015 CH-52-12-873-2015 CH-52-12-874-2015 CH-52-13-437-2015 CH-52-13-438-2015 CH-52-13-439-2015 CH-52-13-440-2015 CH-52-13-442-2015 CH-52-13-443-2015 CH-52-13-444-2015 CH-52-13-445-2015
15 daughter colonies of queens mated at the mating station were tested:
CH-52-13-27-2019 CH-52-13-28-2019 CH-52-13-29-2019 CH-52-13-30-2019 CH-52-13-31-2019 CH-52-13-33-2019 CH-52-13-708-2018 CH-52-13-709-2018 CH-52-13-711-2018 CH-52-13-712-2018 CH-52-13-714-2018 CH-52-13-715-2018 CH-52-13-716-2018 CH-52-13-717-2018 CH-52-13-718-2018