3 daughter colonies of the 4a were tested:
DE-13-112-684-1991 DE-13-112-706-1993 DE-13-353-236-1994
4 tested queens were mated at the mating station:
DE-13-353-546-1997 DE-13-353-588-1997 DE-13-353-1094-1997 DE-13-353-1096-1997
10 daughter colonies of queens mated at the mating station were tested:
DE-13-353-1118-1999 DE-13-353-1119-1999 DE-13-353-1121-1999 DE-13-353-1122-1999 DE-13-353-1123-1999 DE-13-353-1124-1999 DE-13-353-1125-1999 DE-13-353-1127-1999 DE-13-353-1128-1999 DE-13-353-1129-1999