No daughter colonies of the 4a were tested yet.
5 tested queens were mated at the mating station:
CH-51-51-1153-1979 CH-51-51-1154-1979 CH-51-51-1155-1979 CH-51-53-1166-1979 CH-51-53-1167-1979
6 daughter colonies of queens mated at the mating station were tested:
CH-51-51-1186-1980 CH-51-51-1187-1981 CH-51-51-1188-1981 CH-51-53-1230-1981 CH-51-53-1231-1981 CH-51-53-1232-1981