CRD 02-02

Table 17. Comparative VPA Results for Gulf of Maine Cod Assuming 3 Discard scenarios in 1999 and 2000.

Discard Option 1: Lower End of Range

1999 Discards = 2,000 mt
2000 Discards = 1,000 mt
----------------------------------------------------------
Approximate Statistics Assuming Linearity Near Solution
Sum of Squares: 133.743222421604
Mean Square Residuals: 0.45184
 
PAR. EST.
STD. ERR.
T-STATISTIC
 
C.V.
N 2
4.61E+03
2.26E+03
2.04E+00
0.49
N 3
6.28E+03
1.97E+03
3.18E+00
0.31
N 4
2.01E+03
5.86E+02
3.44E+00
0.29
N 5
8.10E+02
3.29E+02
2.46E+00
0.41
N 6
1.85E+02
8.97E+01
2.06E+00
0.49

Discard Option 2: Middle of the Range.

1999 Discards = 2,500 mt
2000 Discards = 1,000 mt
---------------------------------------------------------
Approximate Statistics Assuming Linearity Near Solution
Sum of Squares: 134.032264575886
Mean Square Residuals: 0.45281
PAR. EST.
STD. ERR.
T-STATISTIC
C.V.
N 2
4.63E+03
2.27E+03
2.04E+00
0.49
N 3
6.31E+03
1.99E+03
3.18E+00
0.31
N 4
2.02E+03
5.89E+02
3.44E+00
0.29
N 5
8.03E+02
3.30E+02
2.43E+00
0.41
N 6
1.76E+02
8.79E+01
2.01E+00
0.50

Discard Option 3: Upper End of Range

1999 Discards = 3,000 mt
2000 Discards = 2,000 mt
-------------------------------------------------------
Approximate Statistics Assuming Linearity Near Solution
Sum of Squares: 134.72526691389
Mean Square Residuals: 0.45515
 
PAR. EST.
STD. ERR.
T-STATISTIC
 
C.V.
N 2
4.67E+03
2.30E+03
2.03E+00
0.49
N 3
6.36E+03
2.01E+03
3.17E+00
0.32
N 4
1.99E+03
5.94E+02
3.36E+00
0.30
N 5
7.32E+02
3.29E+02
2.23E+00
0.45
N 6
1.56E+02
8.42E+01
1.86E+00
0.54

STOCK NUMBERS (Jan 1) in thousands - D:\ASSESS\GMcod\gmcod2001\gmcod2001_recr_2.2

Lower End of Range
Ages
1996
1997
1998
1999
2000
2001
1+
12303
11878
12375
18196
19150
14007

Middle of Range
Ages
1996
1997
1998
1999
2000
2001
1+
12480
12095
12571
18399
19200
14048

Upper End of Range
Ages
1996
1997
1998
1999
2000
2001
1+
12766
12566
13007
18842
19464
14004

FISHING MORTALITY - D:\ASSESS\GMcod\gmcod2001\gmcod2001_recr_2.2

Lower End of Range
Ages
1996
1997
1998
1999
2000
4,5
1.01
0.89
0.73
0.70
0.71

Middle of Range
Ages
1996
1997
1998
1999
2000
4,5
1.01
0.88
0.70
0.77
0.73

Upper End of Range
Ages
1996
1997
1998
1999
2000
4,5
1.00
0.85
0.67
0.80
0.87

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 (Modified Jun. 13 2008)