Stulberg	Mean Age (years)	Caterall 4	Herring C
Stulberg 1 (n=4)	4.6	2/10	2/11
Stulberg 2 (n=12)	5.2	4/10	5/11
Stulberg 3 (n=3)	7.2	3/10	3/11
Stulberg 4 (n=1)	11	1/10	1/11