Table 1. The survey and effort data and the estimated proportion of seals from the total population in each sub-area.

	Trap nets			Gill nets				proportion of seals
sub-area	by-catch in sample	effort in sample (gear-days)	total effort (gear-days)	by-catch in sample	effort in sample (km-days)	total effort (km-days)	number of interviews	expected (%)	spring (%)	fall (%)
E1	104	2458	11772				34	6.25	7.5	5
E2	59	1542	8722				25	6.25	7.5	5
E3	10	1096	3135				13	1.75	0.5	3
F1	45	23533	36636				25	1.75	0.5	3
F2	5	3823	58863				10	30	35	25
F3	0	0	5057				0	2	0	4
S1	0	0	8515	20	1402	7904	13	22.5	25	20
S2	61	2450	2563	35	1540	1611	41	16.5	15	18
S3	0	0	4806				0	2	0	4
total	284	34902	140069	55	2942	9515	161	89	91	87

Empty gill net cells represent areas where we assume gill nets do not contribute to by-catch.