No daughter colonies of the 4a were tested yet.
25 tested queens were mated at the mating station:
CH-52-18-345-2015 CH-52-18-347-2015 CH-52-18-349-2015 CH-52-18-350-2015 CH-52-18-351-2015 CH-52-18-352-2015 CH-52-18-353-2015 CH-52-18-354-2015 CH-52-24-514-2015 CH-52-24-515-2015 CH-52-24-516-2015 CH-52-24-518-2015 CH-52-24-519-2015 CH-52-24-520-2015 CH-52-24-521-2015 CH-52-24-522-2015 CH-52-26-93-2015 CH-52-26-95-2015 CH-52-26-96-2015 CH-52-26-98-2015 CH-52-26-99-2015 CH-52-26-100-2015 CH-52-26-102-2015 CH-52-26-103-2015 CH-52-26-104-2015
20 daughter colonies of queens mated at the mating station were tested:
CH-52-24-356-2017 CH-52-24-357-2017 CH-52-24-358-2017 CH-52-24-359-2017 CH-52-24-361-2017 CH-52-24-364-2017 CH-52-24-365-2017 CH-52-24-366-2017 CH-52-24-367-2017 CH-52-26-199-2017 CH-52-26-201-2017 CH-52-26-202-2017 CH-52-26-204-2017 CH-52-26-206-2017 CH-52-26-207-2017 CH-52-26-208-2017 CH-52-26-209-2017 CH-52-26-321-2017 CH-52-140-407-2017 CH-52-574-50-2018