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) |
1954
( 12 )
|
|
|
|
|
100%
|
|
|
|
|
|
|
|
|
1955
( 37 )
|
|
|
|
|
|
16%
|
83%
|
|
|
|
|
|
|
1956
( 49 )
|
|
|
|
|
|
|
42%
|
57%
|
|
|
|
|
|
1957
( 99 )
|
|
|
|
|
|
26%
|
46%
|
18%
|
9%
|
|
|
|
|
1958
( 20 )
|
|
|
|
|
|
65%
|
35%
|
|
|
|
|
|
|
1959
( 0 )
|
|
|
|
|
|
|
|
|
|
|
|
|
No data. |
1960
( 114 )
|
|
|
|
|
|
40%
|
37%
|
21%
|
|
|
|
|
|
1961
( 113 )
|
|
|
|
|
|
42%
|
55%
|
1%
|
|
|
|
|
|
1962
( 144 )
|
|
|
|
|
9%
|
50%
|
20%
|
19%
|
< 1%
|
|
|
|
|
1963
( 0 )
|
|
|
|
|
|
|
|
|
|
|
|
|
No data. |
1964
( 110 )
|
|
|
|
|
|
49%
|
20%
|
30%
|
|
|
|
|
|
1965
( 153 )
|
|
|
|
|
< 1%
|
46%
|
47%
|
5%
|
|
|
|
|
|
1966
( 81 )
|
|
|
|
|
|
41%
|
56%
|
1%
|
|
|
|
|
|
1967
( 74 )
|
|
|
|
|
|
50%
|
6%
|
43%
|
|
|
|
|
|
1968
( 58 )
|
|
|
|
|
|
56%
|
24%
|
18%
|
|
|
|
|
|
1969
( 78 )
|
|
|
|
|
|
33%
|
52%
|
14%
|
|
|
|
|
|
1970
( 47 )
|
|
|
|
|
|
65%
|
14%
|
19%
|
|
|
|
|
|
1971
( 59 )
|
|
|
|
|
|
54%
|
45%
|
|
|
|
|
|
|
1972
( 0 )
|
|
|
|
|
|
|
|
|
|
|
|
|
No data. |
1973
( 0 )
|
|
|
|
|
|
|
|
|
|
|
|
|
No data. |
1974
( 76 )
|
|
|
|
|
|
51%
|
48%
|
|
|
|
|
|
|
1975
( 23 )
|
|
|
|
|
|
|
|
100%
|
|
|
|
|
|
1976
( 80 )
|
|
|
|
|
|
67%
|
32%
|
|
|
|
|
|
|
1977
( 70 )
|
|
|
|
|
|
68%
|
31%
|
|
|
|
|
|
|
1978
( 0 )
|
|
|
|
|
|
|
|
|
|
|
|
|
No data. |
1979
( 122 )
|
|
|
|
|
|
24%
|
60%
|
14%
|
|
|
|
|
|
1980
( 64 )
|
|
|
|
|
|
60%
|
17%
|
21%
|
|
|
|
|
|
1981
( 117 )
|
|
|
|
|
|
50%
|
41%
|
7%
|
|
|
|
|
|
1982
( 72 )
|
|
|
|
|
|
63%
|
36%
|
|
|
|
|
|
|
1983
( 67 )
|
|
|
|
|
|
23%
|
71%
|
4%
|
|
|
|
|
|
1984
( 101 )
|
|
|
|
|
|
47%
|
46%
|
5%
|
|
|
|
|
|
1985
( 116 )
|
|
|
|
|
|
42%
|
50%
|
7%
|
|
|
|
|
|
1986
( 132 )
|
|
|
|
|
|
29%
|
40%
|
30%
|
|
|
|
|
|
1987
( 73 )
|
|
|
|
|
|
49%
|
50%
|
|
|
|
|
|
|
1988
( 135 )
|
|
|
|
|
|
45%
|
32%
|
21%
|
|
|
|
|
|
1989
( 87 )
|
|
|
|
|
|
50%
|
37%
|
11%
|
|
|
|
|
|
1990
( 111 )
|
|
|
|
|
|
44%
|
44%
|
11%
|
|
|
|
|
|
1991
( 134 )
|
|
|
|
|
|
44%
|
48%
|
6%
|
|
|
|
|
|
1992
( 149 )
|
|
|
|
|
|
37%
|
50%
|
12%
|
|
|
|
|
|
1993
( 176 )
|
|
|
|
|
|
43%
|
46%
|
10%
|
|
|
|
|
|
1994
( 21 )
|
|
|
|
|
|
38%
|
57%
|
4%
|
|
|
|
|
|
1995
( 20 )
|
|
|
|
|
|
25%
|
60%
|
5%
|
10%
|
|
|
|
|
1996
( 37 )
|
|
|
|
|
|
48%
|
51%
|
|
|
|
|
|
|
1997
( 16 )
|
|
|
|
|
|
25%
|
68%
|
6%
|
|
|
|
|
|
1998
( 12 )
|
|
|
|
|
|
16%
|
66%
|
16%
|
|
|
|
|
|
1999
( 9 )
|
|
|
|
|
|
33%
|
66%
|
|
|
|
|
|
|
2000
( 150 )
|
|
|
|
|
|
49%
|
30%
|
19%
|
< 1%
|
|
|
|
|
2001
( 130 )
|
|
|
|
|
|
27%
|
57%
|
14%
|
|
|
|
|
|
2002
( 93 )
|
|
|
|
|
16%
|
9%
|
20%
|
53%
|
|
|
|
|
|
2003
( 75 )
|
|
|
|
|
17%
|
20%
|
49%
|
13%
|
|
|
|
|
|
2004
( 106 )
|
|
|
|
|
17%
|
15%
|
33%
|
33%
|
|
|
|
|
|
2005
( 96 )
|
|
|
|
|
14%
|
8%
|
63%
|
13%
|
|
|
|
|
|
2006
( 105 )
|
|
|
|
|
10%
|
63%
|
25%
|
|
|
|
|
|
|
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.
|