Data Availability Page

Data Availability

Detailed data collected by groundfish observers is confidential. As a result, the information in the maps, data files, and shapes files of this web site have been summarized. To ensure confidentiality, we also filtered out data when it came from fewer than 3 vessels. The tables below include data from 1993 through 2005.

Table 1. Number of sampled hauls per year and the percentage available to the public.
Table 2. Weight of the sampled hauls/sets and the percentage available to the public.
Table 3. Number of mapped cells per year and the percentage available to the public.

Table 1 . Number of sampled hauls per year and the percentage available to the public.

Gear	Region	Avg number of hauls/set per year	Range of the number of hauls/sets per year	Range of % of hauls/sets per year available to public
Non-Pelagic	Aleutian Islands	1,963	1,504 - 2,538	69% - 85%
Non-Pelagic	Bering Sea	9,926	6,979 - 13,934	81% - 90%
Non-Pelagic	Gulf of Alaska	2,652	1,582 - 3,872	55% - 70%
Non-Pelagic	All Regions	14,541	10,934 - 18,550	78% - 85%

Pelagic	Aleutian Islands	311	8 - 747	0% - 90%
Pelagic	Bering Sea	12,526	9,492 - 15,741	92% - 95%
Pelagic	Gulf of Alaska	741	444 - 1,225	57% - 77%
Pelagic	All Regions	13,500	10,553 - 16,185	90% - 93%

Pot	Aleutian Islands	341	6 - 885	0% - 42%
Pot	Bering Sea	1,337	622 - 2,994	13% - 80%
Pot	Gulf of Alaska	476	242 - 1,007	0% - 21%
Pot	All Regions	2,125	1,063 - 4,335	10% - 57%

Longline	Aleutian Islands	1,717	675 - 3,052	14% - 67%
Longline	Bering Sea	8,514	5,332 - 12,935	62% - 74%
Longline	Gulf of Alaska	1,624	965 - 2,392	4% - 52%
Longline	All Regions	11,857	9,511 - 15,499	55% - 67%

Table 2 . Weight of the sampled hauls/sets and the percentage available to the public.

Gear	Region	Weight of the sampled hauls/sets averaged by year	Range of weights of sampled hauls/sets per year	Range of weight per year available to public
Non-Pelagic	Aleutian Islands	77,729	67,784 - 100,508	71% - 90%
Non-Pelagic	Bering Sea	203,509	116,204 - 353,508	80% - 92%
Non-Pelagic	Gulf of Alaska	29,363	22,607 - 37,430	44% - 72%
Non-Pelagic	All Regions	310,600	215,691 - 454,516	78% - 88%

Pelagic	Aleutian Islands	22,532	84 - 53,017	0% - 91%
Pelagic	Bering Sea	937,845	700,699 - 1,283,916	93% - 95%
Pelagic	Gulf of Alaska	25,577	12,221 - 44,323	56% - 80%
Pelagic	All Regions	980,323	748,513 - 1,298,832	92% - 94%

Pot	Aleutian Islands	503	4 - 1,587	0% - 44%
Pot	Bering Sea	4,580	1,230 - 7,620	27% -78%
Pot	Gulf of Alaska	1,208	537 - 2,012	0% - 21%
Pot	All Regions	6,249	2,206 - 10,140	19% -63%

Longline	Aleutian Islands	8,546	2,897 - 16,987	13% - 71%
Longline	Bering Sea	81,597	52,785 - 101,742	59% - 74%
Longline	Gulf of Alaska	7,978	5,681 - 10,916	3% - 50%
Longline	All Regions	98,140	80,199 - 116,174	59% - 69%

Table 3 . Number of mapped cells per year and the percentage available to the public.

Gear	Region	Avg number of cells with sampled hauls/sets per year	Range of the number of cells with sample hauls/sets per year	Range of % of cells available to public per year
Non-Pelagic	Aleutian Islands	201	170 - 225	26% - 38%
Non-Pelagic	Bering Sea	1,244	1,023 - 1,660	39% - 48%
Non-Pelagic	Gulf of Alaska	558	356 - 761	24% - 32%
Non-Pelagic	All Regions	2,002	1,669 - 2,576	36% - 40%

Pelagic	Aleutian Islands	67	4 - 223	0% - 47%
Pelagic	Bering Sea	1,113	821 - 1,541	53% - 70%
Pelagic	Gulf of Alaska	172	97 - 231	20% - 39%
Pelagic	All Regions	1,334	1,089 - 1,638	48% - 67%

Pot	Aleutian Islands	69	5 - 175	0% - 12%
Pot	Bering Sea	167	62 - 320	8% - 29%
Pot	Gulf of Alaska	113	58 - 185	0% - 6%
Pot	All Regions	342	140 - 565	4% - 15%

Longline	Aleutian Islands	335	234 - 537	6% - 31%
Longline	Bering Sea	1,542	935 - 2,079	31% - 41%
Longline	Gulf of Alaska	444	277 - 541	1% - 23%
Longline	All Regions	2,321	1,824 - 2,857	26% - 34%