TEMPORAL SAMPLING COVERAGE
Distribution of Net Tows by Year and by Month.
|
|
Year
( n )
|
Jan
|
Feb
|
Mar
|
Apr
|
May
|
Jun
|
Jul
|
Aug
|
Sep
|
Oct
|
Nov
|
Dec
|
Coverage Maps (click to zoom) |
1977
( 639 )
|
|
7%
|
9%
|
10%
|
22%
|
4%
|
|
17%
|
< 1%
|
9%
|
12%
|
3%
|
|
1978
( 731 )
|
|
10%
|
5%
|
4%
|
10%
|
5%
|
9%
|
12%
|
2%
|
31%
|
8%
|
|
|
1979
( 842 )
|
|
3%
|
8%
|
10%
|
13%
|
2%
|
10%
|
15%
|
4%
|
16%
|
7%
|
7%
|
|
1980
( 933 )
|
|
4%
|
16%
|
12%
|
9%
|
9%
|
9%
|
5%
|
3%
|
13%
|
4%
|
8%
|
|
1981
( 918 )
|
|
5%
|
19%
|
13%
|
6%
|
10%
|
8%
|
9%
|
4%
|
10%
|
4%
|
7%
|
|
1982
( 843 )
|
|
3%
|
15%
|
8%
|
12%
|
8%
|
9%
|
6%
|
4%
|
8%
|
7%
|
13%
|
|
1983
( 913 )
|
6%
|
8%
|
5%
|
9%
|
4%
|
13%
|
3%
|
13%
|
6%
|
8%
|
11%
|
8%
|
|
1984
( 1041 )
|
9%
|
5%
|
8%
|
5%
|
15%
|
1%
|
18%
|
7%
|
5%
|
8%
|
11%
|
2%
|
|
1985
( 1107 )
|
7%
|
5%
|
6%
|
14%
|
11%
|
|
6%
|
8%
|
13%
|
8%
|
13%
|
5%
|
|
1986
( 1171 )
|
8%
|
5%
|
5%
|
6%
|
9%
|
7%
|
6%
|
13%
|
14%
|
7%
|
11%
|
3%
|
|
1987
( 1150 )
|
7%
|
3%
|
3%
|
17%
|
16%
|
5%
|
6%
|
8%
|
13%
|
7%
|
8%
|
2%
|
|
1988
( 692 )
|
8%
|
|
14%
|
6%
|
|
|
12%
|
5%
|
9%
|
12%
|
13%
|
16%
|
|
1989
( 406 )
|
32%
|
|
2%
|
|
|
|
|
|
|
16%
|
34%
|
14%
|
|
1990
( 552 )
|
12%
|
13%
|
12%
|
2%
|
|
|
|
|
2%
|
14%
|
21%
|
19%
|
|
1991
( 665 )
|
19%
|
16%
|
|
|
|
|
5%
|
1%
|
4%
|
13%
|
18%
|
19%
|
|
1992
( 831 )
|
15%
|
12%
|
7%
|
4%
|
|
6%
|
7%
|
6%
|
2%
|
18%
|
4%
|
13%
|
|
1993
( 784 )
|
22%
|
5%
|
1%
|
13%
|
8%
|
|
|
|
6%
|
7%
|
17%
|
16%
|
|
1994
( 452 )
|
21%
|
5%
|
5%
|
15%
|
|
13%
|
|
|
11%
|
27%
|
|
|
|
1995
( 635 )
|
5%
|
10%
|
7%
|
12%
|
|
22%
|
3%
|
6%
|
9%
|
9%
|
12%
|
|
|
1996
( 508 )
|
|
11%
|
6%
|
14%
|
< 1%
|
16%
|
< 1%
|
12%
|
10%
|
11%
|
16%
|
|
|
1997
( 526 )
|
3%
|
10%
|
12%
|
9%
|
|
10%
|
9%
|
7%
|
7%
|
14%
|
15%
|
|
|
1998
( 501 )
|
4%
|
3%
|
14%
|
10%
|
9%
|
14%
|
|
11%
|
|
6%
|
23%
|
|
|
1999
( 591 )
|
5%
|
11%
|
10%
|
11%
|
|
10%
|
|
13%
|
5%
|
11%
|
20%
|
|
|
2000
( 573 )
|
|
7%
|
7%
|
10%
|
12%
|
9%
|
|
10%
|
12%
|
8%
|
20%
|
|
|
2001
( 601 )
|
< 1%
|
11%
|
8%
|
10%
|
12%
|
6%
|
|
9%
|
10%
|
11%
|
17%
|
|
|
2002
( 704 )
|
6%
|
8%
|
8%
|
9%
|
11%
|
6%
|
|
17%
|
6%
|
13%
|
12%
|
|
|
2003
( 466 )
|
11%
|
7%
|
11%
|
13%
|
6%
|
|
|
12%
|
9%
|
14%
|
14%
|
|
|
2004
( 600 )
|
1%
|
4%
|
9%
|
9%
|
11%
|
9%
|
|
21%
|
3%
|
9%
|
20%
|
|
|
2005
( 668 )
|
4%
|
11%
|
8%
|
8%
|
9%
|
9%
|
|
13%
|
6%
|
9%
|
18%
|
|
|
2006
( 690 )
|
5%
|
11%
|
11%
|
6%
|
|
18%
|
|
19%
|
10%
|
5%
|
11%
|
|
|
2007
( 645 )
|
1%
|
11%
|
10%
|
8%
|
13%
|
6%
|
|
17%
|
6%
|
14%
|
10%
|
|
|
2008
( 571 )
|
7%
|
9%
|
8%
|
11%
|
< 1%
|
|
|
22%
|
8%
|
14%
|
17%
|
|
|
2009
( 671 )
|
4%
|
14%
|
7%
|
7%
|
7%
|
13%
|
|
14%
|
5%
|
7%
|
18%
|
|
|
2010
( 651 )
|
|
14%
|
7%
|
9%
|
7%
|
12%
|
|
11%
|
6%
|
7%
|
23%
|
|
|
2011
( 569 )
|
|
24%
|
6%
|
7%
|
1%
|
21%
|
|
|
7%
|
7%
|
21%
|
1%
|
|
2012
( 647 )
|
|
19%
|
7%
|
6%
|
< 1%
|
12%
|
|
18%
|
7%
|
9%
|
17%
|
|
|
2013
( 497 )
|
|
16%
|
8%
|
9%
|
1%
|
18%
|
< 1%
|
10%
|
15%
|
5%
|
16%
|
|
|
2014
( 334 )
|
|
|
14%
|
10%
|
11%
|
|
|
|
12%
|
11%
|
39%
|
|
|
2015
( 423 )
|
|
|
8%
|
11%
|
28%
|
3%
|
|
|
13%
|
32%
|
1%
|
|
|
The values in each "Month Column" represent the percentage of that year's total data amount that was sampled in that specific month.
Empty cells indicate that no data were present for that month of that year.
|