. 2007 Sep 12;2(9):e887. doi: 10.1371/journal.pone.0000887

Table 1. Age categories of actually observed numbers (N) and expected numbers (E ¹) of female (f) and male (m) seals that died in the 1988 and 2002 PDV epidemics.

Year	1988				2002
Age group (Yr)	N _f	E _f	N _m	E _m	N _f	E _f	N _m	E _m
Juvenile (1–3)	103	141	85	194	341	424	311	544
Adults (4–13)	191	170	297	204	657	455	822	506
Adults (14)	10	6	10	6	1	0	1	0
Adults (>14)	50	37	38	26	4	124²	8	92²
Sum	354	354	430	430	1003	1003	1142	1142

Expected numbers based on the stable age distribution in 1988, and the projected age distribution in 2002 (Figs 1 and 2).

The 95% confidence interval (0.012) of the mean annual rate of increase (λ = 1.116) gives a range of expected numbers of 108–142 for females and 80–105 for males.

Table 1. Age categories of actually observed numbers (N) and expected numbers (E 1) of female (f) and male (m) seals that died in the 1988 and 2002 PDV epidemics.

Table 1. Age categories of actually observed numbers (N) and expected numbers (E ¹) of female (f) and male (m) seals that died in the 1988 and 2002 PDV epidemics.