No daughter colonies of the 4a were tested yet.
5 tested queens were mated at the mating station:
CH-50-3-54-2006 CH-50-3-116-2006 CH-50-3-524-2006 CH-50-3-589-2006 CH-50-3-725-2006
20 daughter colonies of queens mated at the mating station were tested:
CH-50-3-62-2008 CH-50-3-66-2008 CH-50-3-68-2008 CH-50-3-185-2008 CH-50-3-289-2008 CH-50-3-554-2009 CH-50-3-609-2008 CH-50-3-740-2009 CH-50-3-741-2009 CH-50-3-742-2009 CH-50-3-743-2009 CH-50-3-748-2009 CH-50-3-750-2009 CH-50-3-756-2009 CH-50-3-908-2009 CH-50-6-125-2008 CH-50-66-60084-2010 CH-50-66-60100-2010 CH-50-66-60164-2010 CH-50-66-60187-2010